Describe the process of blood clotting.
|
|
- Basil Gordon
- 5 years ago
- Views:
Transcription
1 T6-1 [244 marks] 1a. Describe the process of blood clotting. [4 marks] 1b. Factor IX is a blood clotting protein which some hemophiliacs lack. In the future hemophilia could be treated [6 marks] using clotting factors synthesized by genetically modified bacteria. Outline the basic technique used for this gene transfer. Explain how males inherit hemophilia and how females can become carriers for the condition. 1c. [8 marks]
2 2a. Draw a labelled diagram of a mitochondrion as seen in an electron micrograph. [4 marks] 2b. A supply of oxygen is needed for aerobic respiration in mitochondria. Describe the features of alveoli in human lungs that adapt them for efficient absorption of oxygen. [6 marks] Explain the mechanism of ventilation of human lungs. 2c. [8 marks] 3a. Outline how and where energy is stored in plants. [4 marks]
3 Ecologists sometimes display data from an ecosystem using a diagram called a pyramid of energy. Describe 3b. what is shown in pyramids of energy. [6 marks] 3c. Explain the control of body temperature in humans. [8 marks] Describe four different types of transport of substances across a membrane. 4a. [4 marks]
4 Hormones such as FSH (follicle stimulating hormone) and LH (luteinizing hormone) affect the development of [6 marks] 4b. certain cells by binding to receptors in the plasma membranes. Outline the role of FSH and LH in the menstrual cycle. 4c. In the placenta, many substances are transported across membranes. Explain the structure and role of the placenta. [8 marks] 5. Immediately after an action potential, which event causes the neuron membrane to repolarize? A. Voltage-gated sodium channels open. B. Voltage-gated potassium channels open. C. Voltage-gated calcium channels close. D. Voltage-gated potassium channels close.
5 6. What is a characteristic of type II diabetes? A. Liver cells are less sensitive to insulin. B. Insulin is no longer produced. C. α cells in the pancreatic islets are destroyed. D. β cells in the pancreatic islets are destroyed. 7. What is the function of LH (luteinizing hormone) in the menstrual cycle? A. Development of follicles in the ovary B. Repair of the uterus lining following menstruation C. Stimulation of ovulation D. Preparation of the uterus for implantation
6 8. Enzymes produced by the pancreas could pass out of the body via the anus. Which route would these enzymes take to do this? 9. What causes the rate of heart contraction to increase or decrease? A. The heart muscle itself B. Nerve impulses from the brain C. A hormone from the thyroid gland D. The rate of return of blood to the left atrium Why do nutrient molecules enter the blood? 10. A. Blood carries nutrients to cells. B. Blood converts nutrients into energy. C. Nutrients and oxygen are mixed by blood. D. Nutrients are stored in blood.
7 Where are structures I, II and III found in the human body? 11. What initiates an action potential along a neuron? 12. A. Potassium and sodium ions diffuse out of a neuron. B. Potassium and sodium ions diffuse into a neuron. C. Neurotransmitters cause depolarization of membrane. D. Acetylcholinesterase breaks down acetylcholine.
8 Why does shivering occur? 13. A. The body cannot control muscles when they become cold. B. Shivering informs the brain that the body is too cold. C. Shivering generates heat and raises body temperature. D. The body diverts blood away from skin reducing heat loss. What is the function of thrombin in the process of blood clotting? 14. A. It acts as a catalyst. B. It criss-crosses the wound to trap blood cells. C. It changes from a soluble protein to an insoluble fibrous protein. D. It releases clotting factors from platelets.
9 Exposure to organophosphorus pesticides (OP) is a cause of serious nerve damage. It disrupts synaptic transmission by inhibiting the enzyme acetylcholinesterase, causing death due to cardiovascular and respiratory failure. Recombinant human acetylcholinesterase (rache) was obtained by genetic engineering and produced in Nicotiana benthamiana plants. It was tested as a new therapeutic treatment in mice that were exposed to OP. The following graph shows the severity of the symptoms shown by each mouse at different ratios of rache to OP. State the minimum ratio at which some mice showed no symptoms. 15a. Analyse the effect of increasing the ratio of rache to OP on the symptoms in mice. 15b. [3 marks]
10 Predict what would happen if a mouse received 300 mg of rache and 600 mg of OP. 15c. To test the effect of OP damage on synapses, mice were treated with rache, OP or both. Their diaphragms were dissected 10 days after treatment. The area of the synapse between axons and the diaphragm was measured. When the synapses are damaged by OP there is a greater area. The box plot shows the effect of different treatments on the area of the synapse. 15d. Calculate the difference in median area of synapse between the control mice and mice treated with rache and OP, giving the units.
11 Describe the evidence for damage to synapses by OP provided by data in the box plot. 15e. 15f. Using the data from both graphs, evaluate the hypothesis that plant-produced rache could be used to protect humans or other mammals from damage caused by exposure to OP. 16a. Describe the properties of water that make it a useful component of blood. [4 marks]
12 Explain the relationship between structure and function of arteries, capillaries and veins. 16b. [8 marks] 16c. Outline how leucocytes defend the body against pathogens. [6 marks] State the source, substrate, products and optimal ph condition for lipase in the human digestive system. 17a. [4 marks] Outline the use of named enzymes in gene transfer using plasmids. 17b. [6 marks]
13 Explain the effect of changes of ph, substrate concentration and temperature on enzyme activity. 17c. [8 marks] 18a. State the functions of the following organelles of a eukaryotic animal cell: lysosome, Golgi apparatus, free ribosomes, plasma membrane, rough endoplasmic reticulum. [5 marks] Distinguish between anaerobic and aerobic cell respiration in eukaryotes. 18b. [4 marks]
14 Explain the mechanism of ventilation in the lungs in order to promote gas exchange for cell respiration. 18c. [9 marks] 19a. Ecologists sometimes display data from an ecosystem using a diagram called a pyramid of energy. Describe what is shown in pyramids of energy. [6 marks] Explain the control of body temperature in humans. 19b. [8 marks]
15 Scientists investigated if training has an influence on the learning of birdsong. They studied juvenile zebra finches (Taeniopygia guttata) that had never been exposed to adult bird songs. They measured neuron activity in an area of the brain involved with song learning. This was done during their sleep, first for four nights when the birds had not heard any birdsong during the previous day, and then for a series of nights after days when they were exposed to recordings of adult zebra finches songs. In the graph below, the mean neuron activity in the period of no exposure to birdsong was used as a baseline and assigned a value of 1. All other measurements of neuron activity are shown relative to this. 20a. State the difference in neuron activity between nights 2 and 7. Outline the effect of exposure to birdsong on neuron activity. 20b.
16 Suggest one reason for the large error bars on days 14 and c. 20d. Evaluate the hypothesis that listening to other zebra finches is important to develop singing ability amongst juveniles.
17 The yeast Brettanomyces bruxellensis is a contaminant of wine which when present produces acetic acid, the main component of vinegar. The presence of acetic acid can lead to economic losses as it alters the taste of the wine and inhibits the growth of Saccharomyces cerevisiae, thus decreasing the ethanol production. Scientists investigated the effect of changing the temperature in fermentation tanks containing only Brettanomyces bruxellensis and a growth medium containing glucose in order to understand the dynamics of this contaminant. State the concentration of glucose at 20 C after 110 hours of incubation, giving the units. 20e.
18 The nitrogen content of a leaf is mainly due to the proteins contained in the chloroplasts. These proteins are either in the thylakoids or in the stroma, where most enzymes are found. The quantity of nitrogen from the thylakoids is directly proportional to the amount of chlorophyll; a ratio of approximately 50 mmol nitrogen : 1 mmol chlorophyll would represent 100 % of the leaf nitrogen content. Scientists hypothesized that the higher leaf percentage nitrogen content resulting from a decrease in light intensity is due mainly to an increase in chlorophyll in many plant species, three of which are represented in the following graph. State the difference in chlorophyll content for Phaseolus between high and low light intensity, giving the units. 20f.
19 Scientists investigated astronauts cardiovascular response to exercise in weightless conditions during a Columbia Space Shuttle mission. They measured the blood pressure and the time between heartbeats, both at rest and during moderate exercise. Blood pressure is expressed by two values corresponding to ventricular contraction (systole) and relaxation (diastole). Measurements were taken before the flight, early in the flight and during the second week in space. The following graphs represent average values for each type of measurement. Calculate the difference in blood pressure at systole between rest and exercise before flight, giving the units. 20g.
20 Elderly people lose bone mineral density (BMD) with age, and this is the source of many health issues, including higher risk of bone fractures. Researchers measured the change in BMD amongst elderly men considering many factors, over a period of four years. The results presented below show the difference between bone density change due solely to vitamin C intake and bone density loss considering a combination of the other factors represented by the baseline (zero). BMD was measured in the spine and at two femur (thigh bone) locations (femoral neck and trochanter) using scanner images. Daily intake of total vitamin C was categorized as high, medium or low. Outline the effect of vitamin C intake on changes in bone density in the spine. 20h.
21 Scientists studied the characteristics of plant species growing in front of the progressively receding Rutor glacier in Italy. As the ice recedes plants are able to colonize the exposed ground. In a study of primary succession, scientists sampled plants from three areas exposed during different time periods. The data is shown in the following triangle graph. Each species is represented by a number and positioned according to its degree of competitiveness (the ability to exclude other species), stress-tolerance (the ability to use nutrients efficiently) and ruderalism (the ability to develop rapidly to avoid disturbance). Stages of succession were classified according to the time the ground had been exposed: early succession (species occurring in ground exposed for less than 68 years), mid-succession (species found in ground exposed between 69 and 181 years) and late-succession (species found in ground exposed for more than 181 years). State the most ruderal species. 20i.
22 Species number 4 has a ruderalism value of 29. State the stress-tolerance value and competitiveness value of 20j. this species. Stress-tolerance value:... Competitiveness value:... Analyse the change of species over time. 20k. [3 marks] State the effect of increasing temperature from 20 C to 30 C on the rate of production of ethanol. 20l.
23 State the percentage value of total leaf nitrogen in chlorophyll for Spinacia at low light intensity. 20m....% Outline the response of the astronauts cardiovascular system to exercise before the flight. 20n. Compare the changes in bone density of the femoral neck with those of the spine. 20o.
24 Suggest one advantage for plants to increase their leaf chlorophyll content per surface area when light intensity 20p. is lower. Discuss whether the cardiovascular system has to adjust to weightless conditions in space. 20q. [3 marks] 20r. Evaluate the evidence provided by the data that the intake of vitamin C supplements may reduce bone density loss in elderly people.
25 Deduce one reason why there were no more rises in ethanol concentration after 120 hours at s. 20t. Deduce one reason why the concentration of ethanol and acetic acid at 35 C does not rise after 80 hours despite the fact that the concentration of glucose is still high. 20u. Discuss the idea of producing wine using a lower temperature range to avoid economic losses due to contamination by yeasts other than S. cerevisiae. [3 marks]
26 Evaluate the hypothesis that lower light intensity increases thylakoid nitrogen. 20v. [3 marks] Label the following diagram of the eye. 21a.
27 Outline the diversity of stimuli that can be detected by human chemoreceptors. 21b. The following image represents a model of ribulose bisphosphate (RuBP) carboxylase (also known as Rubisco) from the green alga Chlamydomonas. 21c. Identify the level of protein structure of the part labelled X.
28 21d. State the role of ribulose bisphosphate (RuBP) carboxylase in the Calvin cycle. 21e. State the role of ligaments in human movement.
29 The following are from the labels of a bag of all purpose white flour (wheat) and a bag of parboil long grain rice. Amounts shown are per serving. Compare wheat flour and rice as main dietary sources of energy for humans. 21f. Explain non-competitive inhibition. 21g.
30 Evaluate the benefits of reducing dietary cholesterol in lowering the risk of coronary heart disease. 21h. Explain the changes in ventilation rate during exercise. 21i.
31 The diagram below shows a synapse where the neurotransmitter is dopamine and some of the processes that 22a. take place during nerve transmission. [3 marks] Explain the effect of cocaine on neurotransmission at a synapse. 22b. Compare convergent and divergent evolution.
32 22c. Explain how polyploidy can contribute to speciation. [4 marks] 22d. Explain the relationship between the action spectrum and the absorption spectrum of photosynthetic pigments in plants. [3 marks] 22e. Discuss the difficulties of classifying organisms into trophic levels. 22f. Draw a labelled diagram to show the structure of a sarcomere.
33 22g. Outline the control mechanism for appetite in humans. 22h. Explain the cause and consequences of biomagnification, using a named example. [4 marks] 22i. Explain the consequences of releasing raw sewage and nitrate fertilizer into rivers. [4 marks] 22j. Explain the roles of actin and myosin in muscle contraction. [4 marks]
34 22k. Explain the possible health consequences of a diet rich in protein. [3 marks] International Baccalaureate Organization 2017 International Baccalaureate - Baccalauréat International - Bachillerato Internacional
Practice Test: Topics 6, 11 and Option D [144 marks]
Practice Test: Topics 6, 11 and Option D [144 marks] 1. What is a feature of the human circulatory system? A. The wall of the right ventricle of the heart is the thickest of the four chambers. B. The pulmonary
More informationM12/4/BIOLO/SPM/ENG/TZ1/XX BIOLOGY STANDARD LEVEL PAPER 1. Thursday 17 May 2012 (afternoon) 45 minutes INSTRUCTIONS TO CANDIDATES
M12/4/BIOLO/SPM/ENG/TZ1/XX 22126010 BIOLOGY STANDARD LEVEL PAPER 1 Thursday 17 May 2012 (afternoon) 45 minutes INSTRUCTIONS TO CANDIDATES Do not open this examination paper until instructed to do so. Answer
More informationPhysiology Quiz (30 Points)
Physiology Quiz (30 Points) Name: 1. What prevents antibiotics from being effective against viruses? A. Viruses have a high rate of mutation. B. Viruses have no RNA. C. Viruses have no metabolism. D. Viruses
More information1. The diagram below represents the homeostatic control of body temperature. What does the part labelled X represent? D. Hypothalamus (Total 1 mark)
1. The diagram below represents the homeostatic control of body temperature. What does the part labelled X represent? A. Heart B. Kidney C. Pituitary D. Hypothalamus 2. What is the sequence of operations
More informationA summary of topics for 3 rd Year igcse Biology
A summary of topics for 3 rd Year igcse Biology Practical work shown in bold is included in the specification Teachers can also include other practical work to support their teaching Third Year Topics
More informationUnit 1 Cell Biology Practice 1 [72 marks]
Unit 1 Cell Biology Practice 1 [72 marks] 1. Which structure found in eukaryotes has a single membrane? A. Nucleus B. Lysosome C. Chloroplast D. Mitochondrion 2. The following electron micrograph shows
More informationSummer Assignment 2016
Welcome to IB Biology 11 th graders. Please complete the following three components over the summer. 1) Chemistry of life review - on a separate piece of paper, please answer the following by hand: Lewis
More informationMultiple Choice Identify the choice that best completes the statement or answers the question.
Take Home Exam: Cell Parts, Membranes, Photosynthesis, Cell Respiration. You are allowed to use any resources you can find for this exam. You may also work with a partner. Multiple Choice Identify the
More informationHuman Body Systems. Long narrow tube mixes enzymes with food Small nutrient molecules diffuse into blood
Human Body Systems Living Environment AIS Mr. DuRoss Digestive System : Break down large food molecules into smaller parts that the body can use Mouth Esophagus Stomach Small intestine Large intestine
More informationBiology 12 November 2001 Provincial Examination
Biology 12 November 2001 Provincial Examination ANSWER KEY / SCORING GUIDE CURRICULUM: Organizers 1. Cell Biology 2. Cell Processes and Applications 3. Human Biology Sub-Organizers A, B, C, D E, F, G,
More informationCopyright 2014 Edmentum - All rights reserved.
Study Island Copyright 2014 Edmentum - All rights reserved. Generation Date: 04/01/2014 Generated By: Cheryl Shelton Title: Science- biology Cells 1. Below is an image of a plant cell. What processes require
More informationBiology 12 January 2003 Provincial Examination
Biology 12 January 2003 Provincial Examination ANSWER KEY / SCORING GUIDE CURRICULUM: Organizers 1. Cell Biology 2. Cell Processes and Applications 3. Human Biology Sub-Organizers A, B, C, D E, F, G, H
More informationBIOLOGY - ORDINARY LEVEL
WARNING: This Question Paper MUST be returned with your answer book(s) at the end of the examination: otherwise marks will be lost. STUDENT NAME SCHOOL L.37 For Examiner s use only Sect. Q. Mark Sect.
More informationCellular Respiration. 3. In the figure, which step of the citric acid cycle requires both NAD+ and ADP as reactants? a. Step 1. c. Step 3 b.
Cellular Respiration 1. Enzymes are organic catalysts. How do they increase the rate of chemical reactions? a. By decreasing the free-energy change of the reaction b. By increasing the free-energy change
More information10. The diagram below shows two different kinds of substances, A and B, entering a cell.
1. In the binomial system of nomenclature, which two classification groups provide the scientific name of an organism? A) kingdom and phylum B) phylum and species C) kingdom and genus D) genus and species
More informationStation Neurons and synapses
Station 1 6.5 Neurons and synapses Label the neuron below: What is that neuron part? 1. Picks up message from neighboring neurons 2. Cells that cover axon and make myelin sheath 3. Releases neurotransmitter
More informationAP Bio Photosynthesis & Respiration
AP Bio Photosynthesis & Respiration Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. What is the term used for the metabolic pathway in which
More information2) Put these in order: I repolarization II- depolarization of action potential III- rest IV- depolarization to threshold
1) During an action potential, a membrane cannot depolarize above: a) The equilibrium potential of sodium b) The equilibrium potential of potassium c) Zero d) The threshold value e) There is no limit.
More information1. Structure A is the a. Cell wall b. Cell membrane c. Vacuole d. Lysosome
Figure 1 Use Figure 1 to answer the following questions: 1. Structure A is the a. Cell wall b. Cell membrane c. Vacuole d. Lysosome 2. Structure E controls cellular functions. It is the a. Nucleolus b.
More informationAt this second appointment, however, it was discovered that the dietary changes had not been effective, which was unexpected.
Question: 1 (a) The control of blood glucose is a very important aspect of homeostasis. (i) Explain what is meant by the term homeostasis. (ii) Describe how negative feedback is used to control blood glucose
More informationAngel International School - Manipay
c Grade 10 Angel International School - Manipay 1 st Term Examination November 2016 Biology Duration: 3Hours Index No:- Choose the correct answer and underline it. (1) When a red stain is added to a culture
More informationCell structure and function flash cards
Process Cell structure and function flash cards involved in aerobic respiration releasing ATP / energy has a double membrane folded into cristae (to make large SA) mostly occurs in mitochondria; needing
More informationUnit 4: Summary. Similarities and Differences Between Living Things
Unit 4: Summary Similarities and Differences Between Living Things Review cell theory All living things made of cells Cells perform life functions Cells come from pre existing cells What are life functions?
More information1 hour 45 minutes plus your additional time allowance
GCE A LEVEL 1074/01 BIOLOGY BY4 P.M. THURSDAY, 16 June 2016 1 hour 45 minutes plus your additional time allowance Surname Other Names Centre Number Candidate Number 2 WJEC CBAC Ltd. BE*(S16-1074-01)MLP
More informationBiology 12 Final Exam Samples Digestion to Nervous System
Biology 12 Final Exam Samples Digestion to Nervous System Digestive System 1. Secretions from which of the following would have the effect shown in the diagram? A. liver B. mouth C. stomach D. large intestine
More informationAxon Nerve impulse. Axoplasm Receptor. Axomembrane Stimuli. Schwann cell Effector. Myelin Cell body
Nervous System Review 1. Explain a reflex arc. 2. Know the structure, function and location of a sensory neuron, interneuron, and motor neuron 3. What is (a) Neuron Axon Nerve impulse Axoplasm Receptor
More informationWhat is the function of ribosomes? Draw and label a Bacteria cell.
Q1 Q2 Q3 What does the mitochondria do? What is the function of ribosomes? What is the function of the cell wall? Q4 Q5 Q6 What is the function of cell membranes? What is diffusion? What is found in plant
More informationPage 1. Name:
Name: 5021-1 - Page 1 1) A student measures his pulse rate while he is watching television and records it. Next, he walks to a friend's house nearby and when he arrives, measures and records his pulse
More informationLiving Environment. Scientific Inquiry Exam
Name: Class: 1. Which elements are present in all organic compounds? 1) nitrogen and carbon 3) hydrogen and oxygen 2) nitrogen and oxygen 4) hydrogen and carbon 2. Which substances are inorganic compounds?
More informationHomeostasis. Endocrine System Nervous System
Homeostasis Endocrine System Nervous System 2004-2005 Regulation Why are hormones needed? chemical messages from one body part to another communication needed to coordinate whole body homeostasis & regulation
More informationGHS BIOLOGY P553/1 June Attempt all the questions in section A, and B Answers to questions in section A, and B must be in spaces provided
GHS BIOLOGY P553/1 June 2015 Time 1. 30 hours S 3 MOT II Name class/no INSTRUCTIONS Attempt all the questions in section A, and B Answers to questions in section A, and B must be in spaces provided ANSWERS
More informationMARK SCHEME for the May/June 2012 question paper for the guidance of teachers 0610 BIOLOGY
UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education MARK SCHEME for the May/June 2012 question paper for the guidance of teachers 0610 BIOLOGY 0610/31
More information2003 Assessment Report Biology GA 1: Written examination 1. SPECIFIC INFORMATION Section A Multiple choice
2003 Assessment Report 2003 Biology GA 1: Written examination 1 SPECIFIC INFORMATION Section A Multiple choice This table indicates the approximate percentage of students choosing each distractor. The
More informationBiology 12 August 1999 Provincial Examination
Biology 12 August 1999 Provincial Examination ANSWER KEY / SCORING GUIDE CURRICULUM: Organizers 1. Cell Biology 2. Cell Processes and Applications 3. Human Biology Sub-Organizers A, B, C, D E, F, G, H
More informationExplain the reason for this difference in resolving power.
1. (a) An electron microscope has a much greater resolving power than an optical microscope. (i) Explain the meaning of the term resolving power. Explain the reason for this difference in resolving power.
More informationNCERT SOLUTIONS OF Life Processes
1 NCERT SOLUTIONS OF Life Processes Question 1: Why is diffusion insufficient to meet the oxygen requirements of multicellular organisms like humans? Answer: The body structure of multicellular organism
More informationThe Brain & Homeostasis. The Brain & Technology. CAT, PET, and MRI Scans
The Brain & Homeostasis Today, scientists have a lot of information about what happens in the different parts of the brain; however they are still trying to understand how the brain functions. We know
More informationRenaissance Biology Midterm Study Guide Answers
Renaissance Biology Midterm Study Guide Answers 2016-2017 LEARNING TARGET 1: List the characteristics of life Made of one or more cells Organization cells -> tissues -> organs -> organ systems -> organisms
More informationBiology 12 January 2002 Provincial Examination
Biology 12 January 2002 Provincial Examination ANSWER KEY / SCING GUIDE CURRICULUM: Organizers 1. Cell Biology 2. Cell Processes and Applications 3. Human Biology Sub-Organizers A, B, C, D E, F, G, H I,
More information2. Complete this table to give the function of the following organelles:
1. Label these diagrams of cells: 2. Complete this table to give the function of the following organelles: Organelle Cell Membrane Cell Wall Chloroplast Mitochondria Vacuole 3. State 2 differences between
More informationPMT. Contains ribosomes attached to the endoplasmic reticulum. Genetic material consists of linear chromosomes. Diameter of the cell is 1 µm
1. (a) Complete each box in the table, which compares a prokaryotic and a eukaryotic cell, with a tick if the statement is correct or a cross if it is incorrect. Prokaryotic cell Eukaryotic cell Contains
More informationCELLS and TRANSPORT Student Packet SUMMARY CELL MEMBRANES ARE SELECTIVELY PERMEABLE DUE TO THEIR STRUCTURE Hydrophilic head
CELLS and TRANSPORT Student Packet SUMMARY CELL MEMBRANES ARE SELECTIVELY PERMEABLE DUE TO THEIR STRUCTURE Hydrophilic head Hydrophobic tail Hydrophobic regions of protein Hydrophilic regions of protein
More informationEndocrine System Hormones (Ch. 45)
Endocrine System Hormones (Ch. 45) Regulation Why are hormones needed? chemical messages from one body part to another communication needed to coordinate whole body daily homeostasis & regulation of large
More informationCell Processes Review
1. Most green algae are able to obtain carbon dioxide from the environment and use it to synthesize organic compounds. This activity is an example of 1) hydrolysis 2) saprophytism 3) cellular respiration
More informationReleasing Food Energy
Releasing Food Energy All food is broken down by the body into small molecules through digestion. By the time food reaches your, bloodstream it has been broken down into nutrient rich molecules that can
More informationStructure and Function of Molecules and Cells 1
Structure and Function of Molecules and Cells 1 The structure of a molecule is related to its function. These figures illustrate how the overall structure of some proteins matches the function of the protein.
More informationUnit 2 Warm Ups. Equilibrium
Unit 2 Warm Ups Equilibrium 1. Cell wall 2. Mitochondria 3. Chloroplast 4. Vesicle 5. Vacuole 6. Rough Endoplasmic Reticulum 7. Smooth Endoplasmic Reticulum 8. Cytoskeleton 9. Lysosomes 10.Cell Membrane
More informationUnit 6.1 Test Review - Teacher THE NERVOUS, INTEGUMENTARY, CIRCULATORY, AND RESPIRATORY SYSTEMS
Name: Period: Due Date: Unit 6.1 Test Review - Teacher THE NERVOUS, INTEGUMENTARY, CIRCULATORY, AND RESPIRATORY SYSTEMS The Nervous System: 1. What are the 3 parts of a neuron and what do they do? Dendrites:
More informationLife Science Unit I. 4. Use the diagram to answer the question. 1. Eukaryotic cells are differentiated from prokaryotic cells because eukaryotic cells
Name: ate: 1. Eukaryotic cells are differentiated from prokaryotic cells because eukaryotic cells. are much smaller. 4. Use the diagram to answer the question. ell iagram. have permeable membranes.. have
More informationUR Revision Guide. igcse Biology. Page 1
UR Revision Guide igcse Biology 1 Photosynthesis Summary Green plants and algae use light energy to make their own food. They obtain the raw materials they need to make this food from the air and the soil.
More information1- Which of the following statements is TRUE in regards to eukaryotic and prokaryotic cells?
Name: NetID: Exam 3 - Version 1 October 23, 2017 Dr. A. Pimentel Each question has a value of 4 points and there are a total of 160 points in the exam. However, the maximum score of this exam will be capped
More informationUnit 1: Science of Life 1. Define the following terms: Hypothesis: Testable explanation for a phenomenon
UCS BIOLOGY STUDY GUIDE FOR 1 ST SEMESTER MIDTERM EXAM 2014-2015 Unit 1: Science of Life 1. Define the following terms: Hypothesis: Testable explanation for a phenomenon Experiment: an orderly procedure
More informationBiology Animal Physiology Summer Final Exam
Name: Biology 449 - Animal Physiology Summer 2011 Final Exam Provide a concise answer to each of the following questions. Your answers should fit in the spaces provided. Diagrams are welcome but must be
More informationThis presentation will be posted to the website.
This presentation will be posted to the website. 1. Steroid hormones operate by: A. crossing the cell membrane and triggering transcription for the appropriate protein B. attaching to the cell membrane
More informationSBI4U PRACTICE QUIZ Endocrine and Nervous Systems
SBI4U PRACTICE QUIZ Endocrine and Nervous Systems Part I: Multiple Choice 1. Steroid hormones operate by: A. crossing the cell membrane and starting transcription for the appropriate protein B. attaching
More informationStudy Guide Answer Key Nervous System
Biology 12 Human Biology Textbook: BC Biology 12 Study Guide Answer Key Nervous System 1. Draw a neuron, label 3 parts and give the function of those parts. Dendrite: carry signals to the cell body Cell
More informationIB Biology Problem Set Unit I Physiology Topics 6.1, 6.2, 6.4, 6.5, 11.2
IB Biology Problem Set Unit I Physiology Topics 6.1, 6.2, 6.4, 6.5, 11.2 1. What happens during muscle contraction? A. The number of light bands is reduced. B. The width of the dark bands is reduced. C.
More informationChapter 3 Review Assignment
Class: Date: Chapter 3 Review Assignment Multiple Choice 40 MC = 40 Marks Identify the choice that best completes the statement or answers the question. 1. Which of the following organelles produces transport
More informationEnzymes: Helper Protein molecules
Enzymes: Helper Protein molecules 2009-2010 Flow of energy through life Life is built on chemical reactions Chemical reactions of life Processes of life building molecules synthesis + breaking down molecules
More information3. The structure labelled X is the A. nucleolus. B. mitochondria. C. cell membrane. D. rough endoplasmic reticulum.
PART A: Multiple Choice Section: Please DO NOT WRITE or MAKE ANY MARKS on this test paper. Put all answers on your SCANTRON CARD. Please make sure that you fill in your Scantron Card correctly: use pencil,
More informationCELL STRUCTURE AND CELL ORGANISATION
CELL STRUCTURE AND CELL ORGANISATION CHAPTER 2 https://wickedbiology.wordpress.com Cellular components of animal & plant cells https://wickedbiology.wordpress.com Plant Cells Cell wall Plasma membrane
More informationKS3 Science Assessment Framework: Year 7 Cells September 2015
Assessment date Duration Learning Objectives Success criteria Misconceptions and Barriers to learning Working Scientifically Skill development Compulsory Practical Investigations Autumn 1 1 To identify
More informationCells and Cell Transport
Cells and Cell Transport Use the list below to answer question 1. Functions of a Cell Structure 1. The functions of which cell structure are described in this list? A. a lysosome B. a mitochondrion C.
More information3.1: All living systems require constant input of free energy. 1. BIOENERGETIC THEORY
Domain 3: Energy 3.1: All living systems require constant input of free energy. 1. BIOENERGETIC THEORY The First Law of Thermodynamics Energy cannot be created or destroyed, only transformed. Living systems
More informationY11 Homeostasis & Response
Key words: 1. Homeostasis: Maintaining a constant internal environment 2. Receptor: Detect a change in the environment 3. Effector: Muscle or gland that carries out a response 4. Stimulus: A change in
More informationReview for Regular Test - H2O, ph, Macromolecules, Enzymes, ATP, Photo, CR A. A B. F C. C D. D
Macromolecules, Enzymes, TP, Photo, R Name: ate: 1. The accompanying diagram represents some chemical events that take place in one type of autotrophic nutrition. 3. The dark reactions in the stroma are
More informationCells. Variation and Function of Cells
Cells Variation and Function of Cells Cell Theory states that: 1. All living things are made of cells 2. Cells are the basic unit of structure and function in living things 3. New cells are produced from
More informationChapter 6---Life Processes
Chapter 6---Life Processes 1. In Photosynthetic process, atmospheric carbon di oxide is to carbohydrates a) oxidised b) Reduced c) Neutralised d) Burnt 2. When water enters the guard cells the stomata
More informationAngel International School - Manipay 3r d Term Examination July, 2015 Biology
Grade 07 Angel International School - Manipay 3r d Term Examination July, 2015 Biology Duration: 2 Hours Part I Choose the correct answer and underline it. 1. Which of the following does not manufacture
More informationName 9 weeks exam Study Guide: Nature of Biology
1. I can analyze an experiment and identify the major parts. This means that I know the difference between an independent variable, dependent variable, constant, experimental group, and control group.
More informationBIOLOGY HIGHER LEVEL
M 44 Write your Examination Number here Coimisiún na Scrúduithe Stáit State Examinations Commission LEAVING CERTIFICATE EXAMINATION, 2006 BIOLOGY HIGHER LEVEL TUESDAY, 13 JUNE AFTERNOON, 2.00 TO 5.00 Section
More informationAim 19: Cellular Respiration
1. During the process of cellular respiration, energy is released from A) carbon dioxide B) oxygen atoms C) water molecules D) chemical bonds 2. The energy used to obtain, transfer, and transport materials
More informationB2.1 Cells and simple cell transport. B2.2 Tissues, organs and organ systems
B2.1.1 Cells and simple cell transport B2.1 Cells and simple cell transport Know that most human and animal cells have the following parts: a nucleus, which controls the activities of the cell; cytoplasm,
More informationProkaryotic and Eukaryotic Cells Look at the diagrams below. Label the prokaryotic cell and the
Prokaryotic and Eukaryotic Cells Look at the diagrams below. Label the prokaryotic cell and the eukaryotic cell. Cell membrane Cytoplasm Cytoplasm Nucleus Organelles Use the diagrams to answer the question.
More informationHomeostasis Practice Test
Name: ate: 1. Which statement explains the importance of maintaining a constant internal environment to ensure proper enzyme functioning? A. hanges in ph and temperature will cause the enzyme reaction
More informationUnit 2 - Characteristics of Living Things
Living Environment Answer Key to Practice Exam- Parts A and B-1 1. A fully functioning enzyme molecule is arranged in a complex three-dimensional shape. This shape determines the A) specific type of molecule
More informationStation One: Nutrition
Station One: Nutrition Name that thing! 1. Chemical substances, found in foods, which are used in the human body. 2. Nutrient in human diet where foods are the only possible source of the nutrient. 3.
More informationAnatomy and Physiology Content Overview
Anatomy and Physiology Content Overview D Block Final = Tuesday May 23, 2017 The format of the exam is fill-ins, matching, and multiple choice. You will have an alphabetical word banks for the fill-in
More informationA2 Level Paper 2 and 3 Topics 5-8
A2 Level Paper 2 and 3 Topics 5-8 Section 3.5: Energy transfers in and between organisms 3.5.1 Photosynthesis 3.5.2 Respiration 3.5.3 Energy and ecosystems 3.5.4 Nutrient cycles Section 3.6 Organisms respond
More informationI. ATP: Energy In A Molecule
I. ATP: Energy In A Molecule All food is broken down by the body into small molecules through digestion By the time food reaches your bloodstream, it has been broken down into nutrient molecules that can
More informationQuestion: 1. (i) Name the products of the light dependent stage that are used in the Calvin cycle. [2]
Question: 1 (a) The Calvin cycle is the stage of photosynthesis during which carbon dioxide is fixed. The Calvin cycle uses the products of the light dependent stage. (i) Name the products of the light
More informationSynoptic Essay Titles
Synoptic Essay Titles 1. The functions of cell surface membranes a. Control of substances entering and exiting the cell i. Glucose absorption ii. Osmosis iii. Facilitated diffusion iv. Nerve impulses b.
More informationCambridge International Examinations Cambridge International General Certificate of Secondary Education
Cambridge International Examinations Cambridge International General Certificate of Secondary Education *2914930272* BIOLOGY 0610/32 Paper 3 Theory (Core) May/June 2017 1 hour 15 minutes Candidates answer
More informationChapter 3: Cell Structure and Function Assignment
Chapter 3: Cell Structure and Function Assignment Provide full detail and be specific for full marks. 1. How do these organelles work together? 2 marks each = 10 marks a. lysosomes and vacuoles When material
More informationSmooth Cardiac Skeletal Location Around tubes Heart tissue attached to skeleton Moves stuff thru Heart beat pumps Moves body parts
Biology 067 - Muscular system A. Type of muscles: Smooth Cardiac Skeletal Location Around tubes Heart tissue attached to skeleton Function Moves stuff thru Heart beat pumps Moves body parts tubes blood
More informationChemistry Regents Review A. A B. B C. C D. D
hemistry Regents Review Name: ate: 1. Nitrogenous wastes result from the metabolism of 4. Which sugar solution was the first to liberate a measurable volume of O 2?. amino acids. glucose molecules. fatty
More informationChapter 1 Plasma membranes
1 of 5 TEXTBOOK ANSWERS Chapter 1 Plasma membranes Recap 1.1 1 The plasma membrane: keeps internal contents of the cell confined to one area keeps out foreign molecules that damage or destroy the cell
More informationUnit 2 Cell Structure and Function
Unit 2 Cell Structure and Function Biology 30 Mr. Oosterom Development of the Cell Theory People have known about the existence of cells for approximately 300 yrs Early microscopes allowed scientists to
More informationStandard 2 Exam Biology. 2. This macromolecule is responsible for short term energy storage and structural support in plants
1. This macromolecule is responsible for structural support, movement, enzymatic activity, cell communication, and is made of amino acids. a. Lipids b. Carbohydrates c. Proteins d. Nucleic Acids e. ATP
More information(a) (i) Structures A and B are found in both the animal cell and the bacterial cell. B... (2)
1 The diagrams show an animal cell and a bacterial cell. (a) (i) Structures A and B are found in both the animal cell and the bacterial cell. Use words from the box to name structures A and B. cell membrane
More informationEndocrine System Hormones. AP Biology
Endocrine System Hormones 2007-2008 Regulation Why are hormones needed? u chemical messages from one body part to another u communication needed to coordinate whole body u daily homeostasis & regulation
More informationHomeostasis. Mark Scheme 1. Save My Exams! The Home of Revision. Level GCSE (9-1) Exam Board 4.5 Homeostasis and Response. Booklet Mark Scheme 1
Homeostasis Mark Scheme Level GCSE (9-) Subject Biology Exam Board AQA Topic 4.5 Homeostasis and Response Sub-Topic Homeostasis Difficulty Level Silver Level Booklet Mark Scheme Time Allowed: 60 minutes
More information1. The diagram shows the flow of energy through a marine ecosystem. The units are kj m 2 year 1. Light energy measured at sea surface 12.
1. The diagram shows the flow of energy through a marine ecosystem. The units are kj m 2 year 1. Light energy measured at sea surface 12.5 10 5 6250 1000 Producers Respiration 1250 500 4000 Primary consumers
More informationMid Term Review. 1. step 1, only 3. both step 1 and step 2 2. step 2, only 4. neither step 1 nor step 2
Name Mid Term Review 1. Diagrams, tables, and graphs are used by scientists mainly to 1. design a research plan for an experiment 3. organize data 2. test a hypothesis 4. predict the independent variable
More informationWhat are the parts of a eukaryotic cell? What is the function of each part of a eukaryotic cell?
CHAPTER 3 SECTION 2 Cells: The Basic Units of Life Eukaryotic Cells BEFORE YOU READ After you read this section, you should be able to answer these questions: What are the parts of a eukaryotic cell? What
More informationAnatomy & Physiology Student Edition. 1. Which list shows different levels or organization within a population ordered from least to most complex?
Name: Date: 1. Which list shows different levels or organization within a population ordered from least to most complex? A. organ systems, organs, organelles, organisms B. organelles, organs, organ systems,
More informationName Class Date. What are the parts of a eukaryotic cell? What is the function of each part of a eukaryotic cell?
CHAPTER 2 SECTION 2 Cells: The Basic Units of Life Eukaryotic Cells BEFORE YOU READ After you read this section, you should be able to answer these questions: What are the parts of a eukaryotic cell? What
More information6. The diagram below represents an interaction between parts of an organism.
Endocrine Review 1. Base your answer to the following question on the diagram below and on your knowledge of biology. Each arrow in the diagram represents a different hormone released by the pituitary
More information2 Answer all the questions. 1 (a) The nervous system is made up of a number of different types of neurone, which transmit electrical impulses.
2 Answer all the questions. 1 (a) The nervous system is made up of a number of different types of neurone, which transmit electrical impulses. Complete the table below by stating three differences in the
More information