3 Cell Biology Eukaryotic: have cell membrane, cytoplasm & genetic material in a nucleus. Prokaryotic: bacterial cells. Smaller. Genetic material not in a nucleus, single loop DNA, one or more small rings DNA (plasmids).
4 Specialised Cells Sperm Cell and Egg Cell Xylem cell Strengthened by lignin Ciliated epithelial Cell Root hair Cell Palisade Cell Muscle and Nerve Cells Phloem cell Guard cell Transports sugars for use/ storage. Cell sap moves to next cell through pores in end wall Red Blood Cell and White Blood Cells
5 Required Practical Microscopy
6 Required Practical Growing Bacteria IV: type OR concentration antiseptic (g/cm 3 ) DV: area of zone of inhibition cm 2 CV: size of paper disk, type of bacteria Flame the neck of bottle of culture & loop before & after spreading bacteria on agar. Soak paper disks in different types/ concentrations of antiseptic, place onto agar. Will diffuse into agar and prevent growth bacteria during incubation. Use a control- sterile water. Tape in cross, store upside down, incubate 2 days at 25 C (not anoxic or 40 C- promotes growth of harmful bacteria) Bacteria- binary fission- up to once every 20 minutes. Measure zone of inhibition πr 2.
7 Cell Division Binary Fission (Bacteria) Mitosis
8 Stem Cells Also in meristems (tips of shoots & roots) of plants. Meristem tissue can differentiate throughout life. Quick & economical. Crops with special features e.g. disease resistance cloned for large crop. Advantages Disadvantages Embryonic stem cells Embryo (first few days after fertilisation) Can differentiate into any type of cell Can treat conditions e.g. paralysis & diabetes Can differentiate into most types of adult cells Embryo would be destroyed anyway (surplus to IVF process) Therapeutic cloning- embryo produced with same genes as patient. Not rejected. Ethical or religious objection- e.g. destruction of life Risk of viral infection. Adult stem cells Can form blood cells Form fewer types of cells
9 Affected by; Concentration gradient, T, SA Exchange surfaces; large SA, thin membrane, efficient blood supply, ventilated Transport of substances Molecules move from an area of high concentration to low concentration. Molecules move along a concentration gradient. The movement of water molecules. Diffusion Osmosis Active Transport The movement of ions Is a passive process that requires no energy Requires energy from respiration. The movement of molecules against a concentration gradient.
11 Required Practical Osmosis IV: concentration sugar solution (g/cm 3 ) DV: change in mass (g) CV: initial length & mass of potato chip, volume of sugar solution (cm 3 )
12 CELL ORGANISATION Topic 2
13 Relate back to villi Digestion Amylase; starch sugar Protease; protein amino acids Lipase; fats glycerol + fatty acids Bile; emulsify fat, neutralise stomach acid
14 Enzymes Biological catalyst Rate of reaction Molecules gain kinetic energy Optimum temperature Enzyme is denaturing Temperature / o C
15 Required Practical Enzymes & ph IV: ph of buffer solution DV: time taken to stop iodine changing black (s) CV: volume amylase (cm 3 ), volume starch (cm 3 ), temperature ( C)
16 Required Practical Food tests Benedict s solution test: 1. Make a solution of the substance to be tested in a boiling tube, and add Benedict's solution (blue). 2. Heat the tube gently for about 2 minutes in the waterbath. A colour change from blue to yellow/orange/red shows the presence of a simple sugar e.g. glucose. Iodine test: 1. Make a solution of the substance to be tested in a boiling tube OR place a small piece in a spotting tile. 2. Add a few drops of iodine. A colour change from orange/ brown to blue/ black shows the presence of starch. Biuret solution test: 1. Add the food to be tested into a test tube. Label. 2. Add 3 drops of Biuret reagent solution to each test tube. Shake gently to mix. 3. Note any colour change. Proteins will turn the solution pink or purple. Fat test: 1. Dissolve some ground up food in water. 2. Add 3 drops of Sudan III stain. 3. Shake gently. If fat is present there will be a redstained oil layer which will float on the surface.
18 Artificial blood = saline (no RBC). Blood & Vessels Type of blood vessel Sketch of blood vessel Structural information How does the structure link to the role played by the blood vessel Artery away Thick muscular walls. Small lumen. High pressure blood. Maintain high pressure. Capillary muscles & lungs Thin- 1 cell thick. Lumen v. small. Speed up diffusion- gas exchange. Vein towards Thin walls. Large lumen. Valves Low pressure blood. Prevent backflow of blood.
19 Coronary Heart Disease Fatty material reduces blood flow = lack oxygen for heart. Treatment How it works Advantages Disadvantages Statins Drug- reduce blood cholesterol Reduce blood cholesterol. Simple. Side effects inc. type 2 diabetes, confusion, liver, muscles, kidney damage. Artificial heart valves Replace failed heart valveartificial or biological (human or pig). Less likely rejected. Don t need donor. Ethical/ religious preference. Cost. Clots. Infection. Heart transplant Replace heart with one from human donor. Existing structure. Rejection- immunosuppressants. Artificial heart Replace heart with man-made heart. Less likely rejected. Don t need donor. Ethical/ religious preference. Bleeding. Infection. Can fail. Clots/strokes. No thinners. Cost. Battery replacement. Stents Tube hold open artery Lower risk heart attack Take blood thinning drugs (dangerous). Scar tissue can irritate & narrow artery.
20 Health = the state of physical and mental well-being. Non-communicable Diseases Factor Effect on health Disease with increased risk factor Diet (Non-contagious) Heart trouble and blood high pressure Type 2 diabetes, Obesity Anorexia, malnourished Description of disease Can t regulate blood sugar Stress High blood pressure Cardiovascular disease Heart has to pump faster/ with a greater volume, can become damaged. Smoking Tar in lungs, difficulty breathing. Heavy coughing. Depression. Cardiovascular disease Lung cancer Damaging airways, arteries and lung lining. Alcohol Damages liver Liver disease Liver (removes toxins from blood) no longer functions. Exercise Obesity, arthritis, muscle weakness, cardiovascular disease Communicable & non-communicable diseases can interact, leading to poor health
21 Cancer Uncontrollable mitosis = tumour Benign (not spreading/ cancerous) & Malignant (spreads to form secondary tumours)
22 Plant Structure Gases diffuse into and out of the leaf Transpiration: water vapour evaporates from the cells inside the leaf. This diffusion is greatest in hot, dry, windy, bright conditions. Xylem cell Strengthened by lignin Phloem cell Transports sugars for use/ storage. Cell sap moves to next cell through pores in end wall Guard cell Turgid w. water to open stoma
23 INFECTION & RESPONSE Topic 3
24 Communicable Diseases Type of pathogen Symptoms Mode of transmission Prevention (not necc. guaranteed 100% effective) Treatment Measles Virus Fever, red skin rash Inhalation of droplets Vaccination HIV Virus Flu-like illness. Body attacks immune cells. Sexual contact, exchange bodily fluids. Barrier contraception, not sharing needles Antiretroviral drugs. AIDS (late stage HIV) Immune system damaged = cancer + infections Salmonella Bacteria Vomiting, abdominal cramps Ingestion of contaminated/ uncooked food Person-to-person Cook food properly Replace fluids. Most cases pass in ~7 days. Gonorrhoea Bacteria Thick yellow/ green discharge vagina/ penis, pain urinating. STD Barrier contraception Antibiotics. Protist disease: Malaria. Vector = mosquito. Recurrent fever, death. Nets & removal of stagnant water reduce chance of being bitten.
25 Human Defence Systems Skin, nose, trachea, bronchi, stomach Phagocytosis: Antibody production: Antitoxin production Vaccinations
26 Antibiotics & Painkillers Antibiotic (e.g. penicillin) kill bacteria, cure disease. Specific. Can t kill viruses. Resistant strains emerging due to overuse. Painkillers only treat symptoms. Antivirals difficult to produce as to destroy virus must damage body tissue.
27 Discovery & Development Drugs Traditional technique Drugs extracted from plants & microorganisms; Digitalis (heart): foxgloves. Aspirin (painkiller): willow. Antibiotic (penicillin): Penicillium mould. Modern technique Tested for toxicity, efficacy & dose. Preclinical trials on cells, tissues, live animals. Clinical trials on healthy volunteers & patients. Very low does. Further clinical trials establish optimum dose. Double blind trials inc. placebo. Results scrutinised by peer review.
28 Monoclonal Antibodies Stimulate mouse lymphocytes to produce partic. antibody Single clone of cells. Antibodies specific to binding site of one protein antigentarget specific chemical/ cells in body. Lymphocytes + tumour = Clone hybridoma : many antibodies Hybridoma can produce antibodies Collect & purify antibodies
29 Uses of Monoclonal Antibodies Pregnancy tests (see next slide). Labs; measure levels hormones/ chemicals in blood, detect pathogens Research; locate/ identify specific molecules in cell/ tissue- bind to fluorescent dye Treat some diseases: cancer; bind to radioactive substance/ toxic drug/ chemical which stops cells growing and/or dividing. Delivers substance to cancer cells without damaging others. More side effects than expected therefore not as widely used as hoped.
30 Pregnancy Tests Using Monoclonal Antibodies HCG
31 Plant Diseases & Defence TMV: Tobacco Mosaic Virus. Many species inc. tomatoes. Discoloured leaves = lack of photosynthesis = poor growth. Rose black spot: Fungus. Spots on leaves, often turn yellow & drop off. Photosynthesis reduced. Spread by water/ wind/ tools. Treat with fungicide / removing affected leaves. Bacteria & insects e.g. aphids can also spread disease. Identification by manual/ website, lab, testing kits. Deficiencies: Nitrate = stunted growth (lack of ions for protein), Magnesium = chlorosis (lack of ions for chlorophyll, no longer green). Physical defences resist invasion microorganisms: Cellulose cell walls, tough waxy cuticle, layers dead cells on stems (bark) can fall off Chemical defences: Antibacterial chemicals, poisons deter herbivores Mechanical adaptations: Thorns/ hairs deter animals, leaves droop/ curl on touch, mimicry tricks
32 BIOENERGETICS Topic 4
33 Photosynthesis Uses of Glucose: Respiration (to release energy from glucose) Endothermic. Energy transfer = light. Starch Storage (chains of glucose that are insoluble, for use when no photosynthesis) Protein Synthesis (used in amino acids along with nitrates from the soil) Cellulose for Cell Walls (made up of glucose makes them strong) Seeds (stored as oils and fats in seeds). Limiting factors: Temperature, light intensity, carbon dioxide concentration, amount of chlorophyll. Greenhouses produce optimum growth conditions to maximise growth & maintain profit.
34 Required Practical Rate of Photosynthesis IV: distance between lamp & pondweed (cm) DV: number bubbles in 1 minute CV: size & mass piece pondweed (g), temperature ( C) Pondweed upside down so oxygen can leave stem. Can be placed in waterbath- heat shield to minimise effect of T. Light intensity: inverse square law.
35 Respiration Process of transferring energy from glucose. Occurs in every cell. Energy for chemical reactions (build larger molecules), movement, keeping warm. Aerobic Mitochondria. Exothermic Anaerobic Exothermic Incomplete oxidation of glucose = less energy transferred. Anaerobic in yeast (fermentation) Alcohol & bread..
36 Response to Exercise, Metabolism During Exercise Inc. demand for energy Inc. heart rate, breathing rate, breath vol. = supply muscles with more oxygenated blood If insufficient oxygen: anaerobic resp. Build up of lactic acid. Long periods vigorous exercise = muscle fatigue, stop contracting efficiently. Blood flow through muscles transports lactic acid to liver- converted back into glucose. Oxygen debt = amount extra oxygen req. after exercise to remove accumulated lactic acid from cells. Metabolism Sum of all reactions in cell/ body. Energy transferred by respiration used for continued enzyme controlled processes that synthesis new molecules: Glucose starch (sugars carbohydrates) Glucose glycogen Glucose cellulose Amino acids protein 1x Glycerol + 3x fatty acids lipids Excess protein urea
Year 10 Biology Revision List - COMBINED This is a summary of everything you need to know for the Biology part of your Combined science GCSE for your exam on 8 th March 2019. 9 Cells and Simple Cell Transport
Year 10 Biology Revision List - SEPARATE This is a summary of everything you need to know for the Biology part of your Biology GCSE for your exam on 2 nd March. 9 Cells and Simple Cell Transport (paper
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
Organisation AQA Biology topic 2 2.1 Principles of Organisation Cells, tissues, organs and systems Basically, all living things are made up of cells A group of CELLS makes up a TISSUE A group of TISSUES
Cells A tissue Organs Organ systems Principles of organisation The basic building blocks of all living organisms. A group of cells with similar structure and function. Groups of tissues performing specific
Learning Summary Content Communicable Diseases Pathogens are microorganisms such as viruses and bacteria that cause infectious diseases in animals and plants. Pathogens may be viruses, bacteria, protists
GCSE Biology (8461). For exams 2018 onwards. Version 1.0 4.2 Organisation In this section we will learn about the human digestive system which provides the body with nutrients and the respiratory system
Stem cells A stem cell is an undifferentiated cell of an organism which can produce more cells of the same type. Certain other cells can arise from stem cells when they differentiate. Stem cells can be
4.2 Organisation In this section we will learn about the human digestive system which provides the body with nutrients and the respiratory system that provides it with oxygen and removes carbon dioxide.
Cells A tissue Organs Organ systems Principles of organisation The basic building blocks of all living organisms. A group of cells with similar structure and function. Groups of tissues performing specific
Part 3- Biology Paper 1 Infection and Response Knowledge Questions 1 AQA Biology (8461) from 2016 Topic B4.3 Infection and response Topic Student Checklist R A G Explain what a pathogen is and how pathogens
100 Facts Biology 1. What is a eukaryote? A plant or animal cell that have a membrane and a nucleus 2. What five things do most animal cells contain? Nucleus, cytoplasm, cell membrane, ribosomes, mitochondria
The circulatory system contains arteries and veins. (a) (i) Describe how the structure of an artery is different from the structure of a vein. (2) A comparison is made between blood taken from an artery
Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signature GCSE BIOLOGY Foundation Tier Paper 1F F Specimen 2018 (set 2) Time allowed: 1 hour 45 minutes
The diagram below shows the parts of the body that digest and absorb food. It also shows some details about the structure of the stomach. (a) Complete the table to show whether each structure is an organ,
Transport Systems in Plants and Animals Mark Scheme Level Subject Exam Board Unit Topic Difficulty Level Booklet GCSE Biology AQA B3 Transport Systems in Plants and Animals Bronze Level Mark Scheme Time
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.
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
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,
Exampro GCSE Biology B2. Cells Foundation tier Name: Class: Author: Date: Time: 8 Marks: 8 Comments: Page of 27 Q. Diabetes is a disease in which the concentration of glucose in a person s blood may rise
OCR (A) Biology GCSE Topic 1: Cell Level Systems Notes (Content in bold is for higher tier only) Cell structures Microscopes (1.1a and c) Light (optical) microscopes The specimen is placed onto a slide,
The diagram below shows the human digestive system. (a) (b) Label the stomach and pancreas on the diagram. Many people suffer from stomach ulcers caused by a species of bacteria called Helicobacter pylori.
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
A. Principles of organisation 1. Describe the levels of organisation in the human circulatory system in size order from the smallest part. Muscle Cell can contract and respiration occurs here Muscle (cardiac)
Q1: What is the word equation for aerobic respiration? Q2: What is the circulatory system composed of? Q3: How is glucose transported in plants? Glucose + Oxygen Carbon dioxide + water The heart and blood
CHAPTER 2: BLOOD CIRCULATION AND TRANSPORT BLOOD CIRCULATION AND TRANSPORT HUMAN BEING PLANTS Function of heart Wilting Structure of heart Blood vessels: characteristics and functions Transpiration: function
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
GCSE Combined Science Biology Paper 1 Exam Date: 15 th May 2018 1 B1 - Cells 188.8.131.52 Eukaryotes and prokaryotes 1. State the 2 main types of cell Eukaryotic (with a nucleus), prokaryotic (without a nucleus)
Part 2- Biology Paper 1 Organisation Knowledge Questions AQA TRILOGY Biology (8464) from 2016 Topic T4.2 Organisation Topic Student Checklist R A G Describe the levels of organisation within living organisms
4-3 Infection and Response Biology. Pathogens are disease causing microorganisms. Draw one line from each disease to the correct disease-causing microorganism. [3 marks] Disease Measles Microorganism Virus
GCSE BIOLOGY Foundation Tier Paper 1F F Specimen 2018 Time allowed: 1 hour 45 minutes Materials For this paper you must have: a ruler a calculator. Instructions Answer all questions in the spaces provided.
Year 9 AQA GCSE Biology Revision Checklist Use this booklet to help you with your revision in preparation for your year 9 Biology exam and final examinations. This is the work that you will have covered
Enzymes The lock and key theory is a simple model to explain the action of enzymes. Lock and key theory Enzymes are protein molecules, with complex shapes which are important for their activity: part of
Part 3- Biology Paper 1 Infection and Response Application Questions Triple Science 1 AQA Biology (8461) from 2016 Topic B4.3 Infection and response Topic Student Checklist R A G Explain what a pathogen
CHAPTER 2: BLOOD CIRCULATION AND TRANSPORT HUMAN BEING BLOOD CIRCULATION AND TRANSPORT PLANTS Function of heart Structure of heart Blood vessels: characteristics and functions Wilting Transpiration: function
Ch 9 Transport of substances in humans Think about (Ch 9, p.2) 1. Blood transports various substances and distributes heat around the body. It also plays a role in body defence. 2. Blood is a liquid tissue
Which part of a cell controls its activities? nucleus Where in the cell do chemical reactions occur? cytoplasm Which part of a cell controls what goes in and out? membrane Where in the cell is energy released
AQA GCSE Biology H SET B Paper 1 Higher Tier Author: Kath Skillern Materials Time allowed: 1 hour 45 minutes For this paper you must have: a ruler a calculator. Instructions Answer all questions in the
Chapter 1 Cells and movements across membranes 1 a) Active transport  b) The salt moves against a concentration gradient/from a low to high concentration c) Mitochondria perform respiration  which
For more awesome GSE and level resources, visit us at www.savemyexams.co.uk/ Movement in and out of cells Question Paper Level IGSE Subject iology Exam oard ambridge International Examinations Unit 3 Movement
B2 Cells and simple transport What are the parts of most human and animal cells? Nucleus, cell membrane, cytoplasm, mitochondria, ribosomes What is yeast? A single celled organism made of cytoplasm, nucleus,
1 How does oxygen move in and out of cells? 2 Name the enzyme produced in salivary glands. 3 How are cells found in salivary glands adapted to produce amylase? Diffusion Amylase Many ribosomes which produce
Enzymes are made and used in all living ganisms. (a) What is an enzyme? (2) (b) Many enzymes wk inside cells. In which part of a cell will most enzymes wk? Draw a ring around the crect answer. cell membrane
Living organisms: variety and common features Using and interpreting data a) S = scale linear and uses at least half of the grid L = lines neat, straight and through points A = axes correct way round (Temperature
GCSE (9 1) Biology A (Gateway Science) J247/01 Paper 1 (Foundation Tier) Sample Question Paper F Date Morning/Afternoon Time allowed: 1 hour 45 minutes You may use: a scientific or graphical calculator
CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge Ordinary Level MARK SCHEME for the October/November 2015 series 5090 BIOLOGY 5090/21 Paper 2 (Theory), maximum raw mark 80 This mark scheme is published as
Page 113»Exercise» Question 1: The kidneys in human beings are a part of the system for (a) nutrition. (b) respiration. (c) excretion. (d) transportation. (c) In human beings, the kidneys are a part of
There are enzymes in biological washing powders. Biological washing powder has to be used at temperatures below 45 C. The enzymes in biological washing powders do not work on the stains on clothes at temperatures
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
4-3 Infection and Response Trilogy. Pathogens are disease-causing microorganisms. Draw one line from each disease to the correct disease-causing microorganism. [3 marks] Disease Measles Microorganism Virus
OCR (A) Biology A-level Topic 4.1: Communicable diseases, disease prevention and the immune system Notes Pathogens Bacteria and viruses are the main disease causing pathogens in humans. Even though they
AQA B3.1 Movement of molecules in and out of cells LEVEL 1 Q 154 minutes 154 marks Page 1 of 44 Q1. The table shows the percentage of some gases in the air a boy breathed in and out. Gases Air breathed
Low Demand Questions QUESTIONSHEET 1 The diagrams show some organs in the human body. (a) Name the organs labelled A, B, C, D and E. A....  B....  C....  D....  E....  (b) Which of the organs
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
GCSE BIOLOGY Higher Tier Paper 1H H Specimen 2018 Time allowed: 1 hour 45 minutes Materials For this paper you must have: a ruler a calculator. Instructions Answer all questions in the spaces provided.
CAMBRIDGE INTERNATIONAL EXAMINATIONS GCE Ordinary Level MARK SCHEME for the May/June 2014 series 5090 BIOLOGY 5090/21 Paper 2 (Theory), maximum raw mark 80 This mark scheme is published as an aid to teachers
3.5 Unit 3: Biology 3 B3.1.1 Dissolved Substances Substances are sometimes absorbed against a concentration gradient. This requires the use of energy from respiration. The process is called active transport.
National 5 Biology Multicellular Organisms Unit Success Criteria Success Criteria Multicellular Organisms National 5 Colour the box at the side of each objective: RED I don t know much about this or am
CAMBRIDGE INTERNATIONAL EXAMINATIONS GCE Ordinary Level MARK SCHEME for the October/November 2012 series 5090 BIOLOGY 5090/21 Paper 2 (Theory), maximum raw mark 80 This mark scheme is published as an aid
Revision Question Bank Life Processes 1. Name the passage in sequence through which urine passes from kidney to the outside in human. How is urine prevented from flowing back into the ureter? The passage
Name: B2 Revision Pack Please keep this pack with you Follow all the steps below... 1) Practice all the maths questions (10%+ of the exam is maths!) Maths and Science Skills Questions Foundation Questions
Do Now Makeups Name: Date: 1. Which organelle is primarily concerned with the conversion of potential energy of organic compounds into suitable form for immediate use by the cell? A. mitochondria B. centrosomes
HSC Biology Year 2016 Mark 93.00 Pages 46 Published Jan 18, 2017 Biology Notes By James (99.05 ATAR) Powered by TCPDF (www.tcpdf.org) Your notes author, James. James achieved an ATAR of 99.05 in 2016 while
Multicellular Organisms Sub-Topic 2.6 Transport Systems in Animals On completion of this sub-topic I will be able to state that: In mammals a transport system is required to deliver essential substances
Circulation, blood and heart Name: Class: Date: Time: 35 minutes Marks: 35 marks Comments: Level,2 and 3. Increasing demand Q. (a) List A gives four structures in the human body. List B gives the functions
CHAPTER6 Life Processes Multiple Choice Questions 1. Which of the following statements about the autotrophs is incorrect? (a) They synthesise carbohydrates from carbon dioxide and water in the presence
Name # Class Regents Review: Characteristics of Life and Biochemistry 6. Some processes that occur in a cell are listed below. A. utilize energy B. detect changes in the environment C. rearrange and synthesize
Write your Examination Number here 2007. M. 43 Coimisiún na Scrúduithe Stáit State Examinations Commission LEAVING CERTIFICATE EXAMINATION, 2007 BIOLOGY - ORDINARY LEVEL TUESDAY, 12 JUNE - AFTERNOON, 2.00
1 LIFE PROCESSES TRANSPORT OF MATERIALS IN ANIMALS AND PLANTS I. Multiple choice questions: Tick ( ) the correct choice. 1. Human heart has (a) one auricle and one ventricle (b) two auricles and one ventricle
Class X Chapter 6 Life Processes Science Question 1: Why is diffusion insufficient to meet the oxygen requirements of multi-cellular organisms like humans? Multicellular organisms such as humans possess
Name: Date: 1. The distortion (change in shape) of enzyme molecules which occurs at high temperatures is known as 5. A characteristic shared by all enzymes, hormones, and antibodies is that their function
Year 10A2 10A7 Success criteria for all assessments (assessments will be every 6 weeks): A* = 90% + A = 80 89% B = 70 79% C = 60 69% D = 50 59% E = 40 49% Note: assessments are linear. For example, the
Write your name here Surname Other names Edexcel IGCSE Centre Number Human Biology Unit: 4HB0 Paper: 01 Candidate Number Monday 9 May 2011 Afternoon Time: 2 hours You must have: Ruler Candidates may use
1 The human body is organised to carry out many different functions. (a) Use words from the box to complete Figure 1 by putting the parts of the body in order of size from smallest to largest. The smallest
c ngel International School - Manipay 1 st Term Examination November, 2017 iology Grade 11 uration: 03 hours Part 1 Index No:- 1 The cell wall of a plant cell is removed using an enzyme. What would happen
1 PART A: MULTIPLE CHOICE (100 questions 65% of exam mark) I: Wellness and Homeostasis 1. Determine the false statement about homeostasis. A) Homeostasis refers to the body s attempt to adjust to a fluctuating
Assessment date Duration Learning Objectives Success criteria Misconceptions and Barriers to learning Working Scientifically Skill development Compulsory Practical Investigations Autumn 1 1 To identify
2 GLOSSARY Active transport movement of matter into, or out of, a cell which requires energy from the cell; usually this involves movement against the concentration gradient Adenosine triphosphate (ATP)
2 Organisation higher (import) Name: Class: Date: Time: 56 minutes Marks: 56 marks Comments: Page of 2 The number of people in the UK with tumours is increasing. (a) (i) Describe how tumours form. () Tumours
Year 10 Biology Mock Exam Revision Mind Maps Set 2-5 Name the three major nutrient groups and state why we need each Define metabolic rate State three things that affect metabolic rate: Why does a person
4.B.9.B BIOLOGICAL PROCESSES AND SYSTEMS (B.9) Science concepts. The student knows the significance of various molecules involved in metabolic processes and energy conversions that occur in living organisms.
For more awesome GSE and level resources, visit us at www.savemyexams.co.uk/ igestion & The limentary anal Question Paper Level Subject Exam oard Topic Sub Topic ooklet O Level iology ambridge International
Learning Cycle Overview: Year 9 Biology Learning Cycle 2 Overview Line of enquiry 1: Hypothesis 1: Hypothesis 2: Hypothesis 3: How do substances move in and out of our cells? The rate of diffusion cannot
Q1.Substances can move into and out of cells. (a) (i) How does oxygen move into and out of cells? Draw a ring around one answer. diffusion digestion photosynthesis (ii) Diagram 1 shows the percentage concentration