Bio10 Lab 2: Cells. Using your text and the cell models and posters in the lab, sketch an animal cell and a plant cell on the group results sheet.
|
|
- Helena Kelly
- 6 years ago
- Views:
Transcription
1 Bio10 Lab 2: Cells Cells are the smallest living things and all living things are composed of cells. They are able to perform all necessary metabolic functions as well as specialized tasks such as moving, feeding and reproducing. Despite their minute size, cells are amazingly complex and often very beautiful. There are two general types of cells: Prokaryotic cells o Lack a nucleus, but they do contain DNA o Also lack other organelles, such as mitochondria, chloroplasts, etc. o Are simple unicellular organisms like bacteria. o They represent earth s oldest organisms, having evolved about 4 billion years ago Eukaryotic cells o Do contain a membrane-bound nucleus and other organelles o Most organisms are eukaryotic all protists, fungi, plants and animals are in this group. Using your text and the cell models and posters in the lab, sketch an animal cell and a plant cell on the group results sheet. Activity 1: Looking at selected eukaryotic cells Eyepieces Microscope Objective lenses Stage Coarse focusing (outer) knob Illuminator Fine focusing (inner) knob 1
2 Focusing the Microscope: 1. Position slide on stage; use the clips to hold the slide in place. 2. Using the 4x objective lens and the coarse focus knob, bring the specimen into focus 3. Center the specimen and switch to the 10x objective lens. Focus using the fine focus knob ** Note: the course focus knob can only be used with the 4x objective lens!** 4. Center the specimen and switch to the 40x objective lens. Focus using the fine focus knob Calculating the total magnification To determine the total magnification, multiply the magnification of the eyepiece lens (10x) by the magnification of the objective lens (4x, 10x, or 40x). Examine an animal cell (your cheek cell) under the microscope Gently scrape the inside of your mouth with a toothpick. Smear the cells on a clean slide and stain them with a drop of methylene blue (being careful not to stain your fingers). Place a coverslip on top. Discard the toothpick and slide in the biohazard container. Beginning on low power (4X), locate some cheek cells. Center them in the field of view and increase the magnification to 10X and then to 40X. You should be able to see some flat cells with a tiny, dark speck inside the cell this is the nucleus. Are we prokaryotic or eukaryotic organisms? Draw your cheek cells on the Group Results Sheet. Examine a plant cell under the microscope Make a wet-mount slide of Elodea leaves (an aquatic plant often used in fish tanks). Take just a small sample from the growing tip of the Elodea, place it in a clean drop of water and add a coverslip. Do NOT add stain. Begin on low power you know the drill. Sketch some Elodea cells on the Group Results Sheet. Activity 2: Osmosis and Water Balance In this activity, you will be looking at the diffusion of water (aka osmosis). Remember that passive transport is driven by a concentration gradient and will continue until equilibrium is reached provided the solute (e.g. salt) does not encounter any barriers it cannot pass through (like a cell membrane) Salt exists in water as sodium ions (Na + ) and chloride ions (Cl - ). Charged ions like these are unable to diffuse through most biological membranes. However, water molecules can diffuse through biological membranes so salinity imbalances are corrected by the diffusion of water across the membrane to equalize salt concentrations on both sides of the membrane. The diffusion of water across a selectively permeable membrane is known as osmosis. Consider the case of a membrane separating two solutions with different concentrations of a solute say salt (NaCl). Solutions with equal solute concentrations are said to be isotonic to each other. A solution with a higher concentration of solute is hypertonic to the other solution. The solution with a lower solute concentration is hypotonic to the other solution. 2
3 Note that the hypotonic solution has the lower solute concentration, but also the higher water concentration. Therefore water will diffuse across the membrane along its concentration gradient from an area of higher water concentration (the hypotonic solution) to one of lower water concentration (the hypertonic solution). Water balance in animal cells. In order to survive, marine and freshwater organisms must have a way to balance an excessive uptake or excessive loss of water. Organisms living in seawater must have a means of preventing the loss of water from their body to the highly saline environment. Freshwater organisms must deal with the opposite problem of preventing excessive amounts of water from the freshwater environment entering their more saline bodies. The control of water balance is called osmoregulation. 3
4 The POTATO Activity 1. In your lab groups (4 students), core out 4 equally sized pieces of potato. Keep the potato(s) that you take the cores from at your table. 2. Take 3 empty beakers and fill them with the salt water concentrations provided (0.5%, 3.5%, 7.5%). Fill them enough to cover the potato. 3. Place one piece of potato into each filled beaker. 4. Wait minutes, and while you re waiting go to the Elodea activity (below) 5. Remove the potato cores from the solutions and try to reinsert them back into the potato that you removed them from. 6. Based on how easy it is to reinsert the core, complete the data sheet below. "Feel" of Reinsertion What do you think happened to the cells?* Is the solution hypo, iso, or hypertonic to the potato cells? Solution A (0.5%) Solution B (3.5%) Solution C (7.5%) * Are the potato cells larger? Did they shrink? Did they stay the same size? The Elodea Activity 1. Each lab group should take a single leaf of Elodea and place it on a microscope slide. Place a few drops of freshwater on the leaf and place a coverslip over it. 2. Observe it under the microscope using the 40X objective. Draw it on the Results Sheet. 3. Take a few drops from the 7.5% salt water beaker and place them at one edge of the cover slip. At the same time, place a piece of paper towel at the adjacent edge of the cover slip. This will cause the salt water to flow through the cells of the Elodea plant and get soaked up by the paper towel. 4. After 1-2 minutes, observe the Elodea cells and draw your observations on the Group Results Sheet. 5. Repeat steps 3 & 4 using regular tap water instead of the salt solution. 6. After 1-2 minutes, observe the Elodea cells and note any changes that you observe. Illustrate. 4
5 Lab 2 Group Results Sheet Names 1. In the space below, diagram two eukaryotic cells an animal cell and a plant cell. Using your text as well as the cell models and posters in the lab, label the following structures on your drawings. Cell membrane Mitochondria Cell wall Nucleus Chloroplast Central vacuole Animal cell Plant cell 2. Which of the structures listed above are only found in plant cells? 3. In the space below draw your cheek cells using the 40X objective. Label the cell membrane, nucleus and cytoplasm. a. What is the total magnification? TM= X 4. Sketch some Elodea cells in the space below. Label the cell wall, central vacuole and chloroplasts. a. TM= X 5
6 5. What do you think happened to the potato cells in each of the solutions? Did they get bigger? Shrink? Say the same? Why? Solution A (0.5%) Solution B (3.5%) Solution C (7.5%) Which solution is hypertonic? 6. What would happen to a red blood cell placed in a hypotonic solution? Why? 7. Based on your results, do you think potatoes can osmoregulate successfully? Why or why not? 8. Elodea Cell Drawings (Please note the total magnification for each image) Original wet mount After 2 drops of 7.5% salt water After 2 drops of tap water 9. Did water move into or out of the Elodea cell when the salt water solution was applied? Explain your reasoning. 10. Did water move into or out of the Elodea cell when the fresh water solution was applied? Explain your reasoning. 6
OBSERVING LIVING CELLS
Pre-Lab Discussion OBSERVING LIVING CELLS Name: Date: Ever since the first microscope was used, biologists have been interested in studying the cellular organization of all living things. After hundreds
More informationAwesome Osmosis and Osmoregulation. 2. Describe some of the methods of osmoregulation by freshwater and marine organisms.
Awesome Osmosis and Osmoregulation Purpose: By the end of this lab students should be able to: 1. Understand osmosis and be able explain the differences between isotonic, hypertonic, and hypotonic solutions.
More informationExplain how the genetic information in the nucleus is used to direct the production of proteins in the cytoplasm.
Cells: The building blocks of life Study Guide Compare the following pairs of terms, noting the most significant differences: prokaryotic cells versus eukaryotic cells, plant cells versus animal cells.
More informationI. Using a Microscope
Name: Date: Period: I. Using a Microscope Skills * using a compound light microscope * making a wet mount Objectives * Demonstrate the proper use and care of a compound light microscope * Focus the compound
More informationExperimental Design and Investigating Diffusion and Osmosis
Bio 101 Name: Experimental Design and Investigating Diffusion and Osmosis OBJECTIVES: To practice applying hypothesis testing. To further your understanding of experimental design. To gain a better understanding
More informationGeneral Biology 1 Lab #4: Cells
ame: Date: General Biology 1 Lab #4: Cells Pre-lab Reading Assignment: ALL of CHAPTER 6 in Campbell 10 th Ed. Bring paper for taking notes; you will have a lecture on Cells. Visit the following websites:
More informationLAB #3 - DIFFUSION AND OSMOSIS
DIFFUSION EXPERIMENT - pg. 4-6 LAB #3 - DIFFUSION AND OSMOSIS Definition of DIFFUSION - The natural tendency of particles to move from areas of high concentration to areas of lower concentration START
More informationOsmosis and Diffusion: How biological membranes are important This page is a lab preparation guide for instructors.
Osmosis and Diffusion: How biological membranes are important This page is a lab preparation guide for instructors. **All solutions and dialysis bags can easily be prepared prior to lab start to maximize
More informationBiology Cell Unit Homework Packet #3
Biology Cell Unit Homework Packet #3 Name DUE: Hour HW #5 Egg Demo Drawings Analysis HW #6 Elodea Drawings lab Analysis HW #7 Cell Questions Membrane and Transport HW #8 Questions / 5 possible points Homework
More informationLook at the following images, what are some similarities and differences between the cells?
Look at the following images, what are some similarities and differences between the cells? Name the two different types of cells 1. Prokaryotic Cells 2. Eukaryotic Cells Unit 3: Cells Objective: To
More informationInvestigating Osmosis By Amy Dewees,Jenkintown.High School and Dr. Ingrid Waldron, Department of Biology, University of Pennsylvania, 20091
Investigating Osmosis By Amy Dewees,Jenkintown.High School and Dr. Ingrid Waldron, Department of Biology, University of Pennsylvania, 20091 What is diffusion? What does it mean to say that a membrane is
More informationCell Boundaries Section 7-3
Cell Boundaries Section 7-3 The most important parts of a cell are its borders, which separate the cell from its surroundings. The cell membrane is a thin, flexible barrier that surrounds all cells. The
More informationName Date. In this lab investigation you will investigate the movement of water through a selectively permeable membrane.
This lab will be hand-written in your data book AP Osmosis Labs Part A (was done in previous a previous class: Dialysis tube + Starch + Glucose) Part B: Osmosis Unknowns In this lab investigation you will
More informationLAB: DIFFUSION ACROSS A SELECTIVELY PERMEABLE MEMBRANE
LAB: DIFFUSION ACROSS A SELECTIVELY PERMEABLE MEMBRANE NAME: PERIOD: DATE: Building Background Knowledge: 1) SELECTIVELY PERMEABLE MEMBRANE: Every cell is surrounded by a selectively permeable membrane
More informationCells and Osmosis BCT Questions. Questions taken from 2-12 to 2-18
Cells and Osmosis BCT Questions Questions taken from 2-12 to 2-18 1. Which of the following would be least affected by defective receptor proteins on a cell membrane? a. Homeostasis b. Muscle activity
More informationBiology Cell Unit Homework Packet #3
Biology Cell Unit Homework Packet #3 Name DUE: Hour HW #5 Egg Demo Drawings Analysis HW #6 Elodea Drawings lab Analysis HW #7 Cell Questions Membrane and Transport HW #8 Questions / 5 possible points Homework
More informationLAB: DIFFUSION ACROSS A SELECTIVELY PERMEABLE MEMBRANE
LAB: DIFFUSION ACROSS A SELECTIVELY PERMEABLE MEMBRANE NAME: PERIOD: DATE: Building Background Knowledge: 1) SELECTIVELY PERMEABLE MEMBRANE: Every cell is surrounded by a selectively permeable membrane
More informationCellular Organelles EOC Quiz
Cellular Organelles EOC Quiz This quiz is composed of 10 EOC type questions Each question is followed by the same question with the correct answer highlighted Therefore, Read the questions and the choices,
More informationChapter 7: Cells Review Packet Name: 1. endoplasmic reticulum The organelle made up of internal membranes where lipids and proteins are synthesized
Chapter 7: Cells Review Packet Name: Organelles 1. endoplasmic reticulum The organelle made up of internal membranes where lipids and proteins are synthesized 2. Golgi apparatus Enzymes in this apparatus
More informationChapter MEMBRANE TRANSPORT
Chapter 3 I MEMBRANE TRANSPORT The cell membrane, or plasma membrane, is the outermost layer of the cell. It completely surrounds the protoplasm or living portion of the cell, separating the cell s interior
More informationDiffusion and Osmosis
Diffusion and Osmosis OBJECTIVES: 1. To explore how different molecules move by diffusion and osmosis through semi-permeable membranes. 2. To understand how concentration affects the movement of substances
More informationBiology Movement across the Cell Membrane
Biology 160 - Movement across the Cell Membrane Prelab Information Movement is one of the characteristics of life. The ability to control the movement of material across the cell membrane is an incredibly
More informationINTRODUCTION TO THE LIGHT MICROSCOPE
Name: INTRODUCTION TO THE LIGHT MICROSCOPE Introduction: If you missed the microscope lab we did in class, you will need to make it up by using a "virtual microscope" which can be accessed on the internet.
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 informationCell Diffusion and Osmosis Lab: Directions
Cell Diffusion and Osmosis Lab: Directions Adapted from AP bio lab 4 http://media.collegeboard.com/digitalservices/pdf/ap/bio-manual/bio_lab4-diffusionandosmosis.pdf Please return Background: Most cells
More informationChapters 3, 4 and 5 UNIT TWO: ENERGY AND CELLS
Chapters 3, 4 and 5 UNIT TWO: ENERGY AND CELLS 1. Identify and explain the parts of a compound light microscope. 2. Properly use the compound light microscope to view specimens. 3. Explain the Cell Theory.
More informationLab #6: Cellular Transport Mechanisms Lab
Lab #6: Cellular Transport Mechanisms Lab OVERVIEW One of the major functions of the plasma membrane is to regulate the movement of substances into and out of the cell. This process is essential in maintaining
More informationDIFFUSON AND OSMOSIS INTRODUCTION diffusion concentration gradient. net osmosis water potential active transport
DIFFUSON AND OSMOSIS NAME DATE INTRODUCTION The life of a cell is dependent on efficiently moving material into and out of the cell across the cell membrane. Raw materials such as oxygen and sugars needed
More informationLesson 1. Cell Theory - Statements - Exceptions. Categorizing Cells - Prokaryotes vs Eukaryotes
Lesson 1 Cell Theory - Statements - Exceptions Categorizing Cells - Prokaryotes vs Eukaryotes The Cell Theory The discovery of cells and their structure is linked to the development of the magnifying lenses,
More informationCells & Transport. Chapter 7.1, 7.2, & 7.4
Cells & Transport Chapter 7.1, 7.2, & 7.4 Do Now How big is a cell? How many cells are we made of? How many cells is the smallest living organism made of? Objectives Describe how cells were discovered
More informationBio 111 Study Guide Chapter 5 Membrane Transport and Cell Signaling
Bio 111 Study Guide Chapter 5 Membrane Transport and Cell Signaling BEFORE CLASS: Reading: Read the whole chapter from pp. 100-119. There are many great figures in this chapter. Make sure you study all
More informationSc ienc e 10-Biology Ac t ivit y 6 Ex perim ent on Osm osis
Sc ienc e 10-Biology Ac t ivit y 6 Ex perim ent on Osm osis Name Due Date 10 Show Me Hand In Correct and Hand In Again By Purpose: To observe cells in osmotic balance and osmotic imbalance. Introduction:
More informationCell Structure and Function C H A P T E R 7
Cell Structure and Function C H A P T E R 7 EQ: What Scientists and inventions helped aid in creating Cell Theory? 7.1 Cell Theory (Cells and Living Things) Cells are the basic building block of all life
More informationWhat kind of things must pass into and out of cells?? Be careful not to go too fast.
1. A membrane s molecular organization results in selective permeability What kind of things must pass into and out of cells?? Be careful not to go too fast. Permeability of a molecule through a membrane
More informationBiology Movement Across the Cell Membrane
Biology 160 - Movement Across the Cell Membrane Prelab Information Movement is one of the characteristics of life. The ability to control the movement of material across the cell membrane is an incredibly
More informationChapter Seven. A View of the Cell
Chapter Seven A View of the Cell Cellular Organization Cell Tissue group of cells functioning together. Organ group of tissues functioning together. Organ System group of organs functioning together. Organism
More informationCell Transport Unit Test
Cell Transport Unit Test ~Please DO NOT write on the test~ I CAN describe the parts of cells. 1. The ideas that all living things are composed of cells come from other cells defines: a. Central dogma b.
More informationChapter 7 Notes. Section 1
Chapter 7 Notes Section 1 Cells Cells remained out of sight during most of human history until the invention of the first microscopes. It was not until the mid 1600s that scientists began to use microscopes
More informationIntroduction to Cells
Learning Outcomes 1 To revise the basic structure of plant and animal cells to discuss the similarities and differences between animal and plant cells. Identify variation in structure between cells within
More information1.0 Learning Intentions
Subject: Junior Certificate Science Teacher: Mrs Welby Week: Week 1 Lesson: Living Things, Cell and Microscope and Food 1.0 Learning Intentions At the end of the lesson, tick of each of the learning intentions
More informationLEVEL ZERO VOICE CATALYST (10 minutes, individual work): 1. Fill out this chart:
AGENDA 10/19-10/20 2. Experiment CATALYST (10 minutes, individual work): 1. Fill out this chart: Step Location Product (s) Examples Lactic Acid Fermentation Alcohol Fermentation CATALYST (10 minutes, individual
More informationChapter 5 Homeostasis and Cell Transport
Chapter 5 Homeostasis and Cell Transport Palabra Palooza! Role #1: The Definer says: The word can be explained as Role #2: The Re-stater says: Then I understand (word) to mean Words: Passive transport
More informationSTATION 4: TONICITY due to OSMOSIS / Turgor Pressure in Plants
STATION 4: TONICITY due to OSMOSIS / Turgor Pressure in Plants Tonicity is the concentration of solutions that determines the direction water will move across a semi-permeable membrane. A solution is a
More informationLab #2: Osmosis Pre-Lab Exercise
Lab #2: Osmosis Pre-Lab Exercise Name 1. Using your own words, define the following terms: a. Osmosis b. Concentration gradient: c. Hypertonic solution: d. Isotonic solution: e. Hypotonic solution: 2.
More informationWhat kind of things must pass into and out of cells?? Be careful not to go too fast.
1. A membrane s molecular organization results in selective permeability What kind of things must pass into and out of cells?? Be careful not to go too fast. Permeability of a molecule through a membrane
More informationPart 1 Multiple Choice Shade the correct answer on the SCANTRON sheet provided.
Part 1 Multiple Choice Shade the correct answer on the SCANTRON sheet provided. 1. The type of electron microscope that gives 2 dimensional images. a) Scanning b) Condensing c) Transmission d) Multidimensional
More informationLIFE IS CELLULAR. Cell Theory. Cells Are Small. Prokaryotic Cell 10/4/15. Chapter 7 Cell Structure and Function
Chapter 7 Cell Structure and Function The cell basic unit of life, all living things are made of a cell (unicellular) or more than one cell (multicellular). LIFE IS CELLULAR The invention of the microscope
More informationReview: Cellular Transport
Review: Cellular Transport OSMOSIS 1. Label the pictures below ( isotonic, hypertonic, or hypotonic). The dots represent solutes. A. B. C. 2. means there is a GREATER concentration of solute molecules
More informationCH 7 CELL STRUCTURE AND FUNCTION
1 Review What is a cell Explain What three statements make up the cell theory Infer How did the invention of the microscope help the development of the cell theory 2 Review How do microscopes work Apply
More informationUnit 7: Topic 7.4 Cellular Transport
Unit 7: Topic 7.4 Cellular Transport Name: Class key Period: Page 1 of 39 Topic 7.4 assignments Pages/Sections Date Assigned Date Due Page 2 of 39 Topic: Membrane Channels Objective: Why do molecules move
More informationDiffusion, Osmosis and Active Transport
Diffusion, Osmosis and Active Transport Part A: Diffusion A living cell interacts constantly with the environmental medium that surrounds it. The plasma membrane surrounding a cell is a living, selectively
More informationSlide 2 of 47. Copyright Pearson Prentice Hall. End Show
2 of 47 7-3 Cell Boundaries All cells are surrounded by a thin, flexible barrier known as the cell membrane. Many cells also produce a strong supporting layer around the membrane known as a cell wall.
More informationMaintained by plasma membrane controlling what enters & leaves the cell
CELL TRANSPORT AND HOMEOSTASIS Homeostasis Balanced internal condition of cells Also called equilibrium Maintained by plasma membrane controlling what enters & leaves the cell Functions of Plasma Membrane
More informationName Date Class. Cellular Structure
Concept Mapping Cellular Structure Complete the network tree about cellular structure. These terms may be used more than once: animals, bacteria, chloroplasts, eukaryotes, a large central vacuole, plants,
More informationIntroduction diffusion osmosis. imbibe Diffusion The Cell Membrane and Osmosis selectively permeable membrane Osmosis 1. Isotonic 2.
Topic 6. Diffusion Introduction: This exercise explores the physical phenomenon of diffusion and osmosis. Osmosis is simply the diffusion of water through a selectively permeable membrane. We will also
More informationStudy Guide for Biology Chapter 5
Class: Date: Study Guide for Biology Chapter 5 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Which of the following led to the discovery of cells? a.
More informationPassive Transport Lab: Diffusion and Osmosis
Name Date Period Passive Transport Lab: Diffusion and Osmosis OBJECTIVE: Apply your understanding of the processes of diffusion and osmosis to explain observational data. PART A: Starch and Iodine MATERIALS
More informationCh3: Cellular Transport Review KEY
Ch3: Cellular Transport Review KEY OSMOSIS Label the pictures below ( isotonic, hypertonic, or hypotonic environments) hypotonic hypertonic isotonic hypertonic means there is a GREATER concentration of
More informationExplain how the structure of the plasma membrane allows material to move through. Explain the processes of Passive Transport and Active Transport.
Objectives: Explain how the structure of the plasma membrane allows material to move through. Explain the processes of Passive Transport and Active Transport. Predict whether active or passive transport
More informationATP: The energy currency of the cell. The ATP Cycle:
ATP: The energy currency of the cell The ATP Cycle: Changing the rate of catabolic and anabolic reactions- How do you control these chemical reactions? Enzymes and Activation Energy Enzymes as biological
More informationCytology I Study of Cells
Cytology I Study of Cells Biology 20 Which cell type has organelles such as mitochondria, nuclues, Golgi bodies, etc? A) prokaryotic B) eukaryotic C) bacterial D) viral E) none of these Cellular Basis
More informationCellular Structure and Function. Chapter 7
Cellular Structure and Function. Chapter 7 Cell Discovery and Theory. A cell is the basic structural and functional unit of all living organisms. The human body is made of trillions of cells that are too
More information1. How many fatty acid molecules combine with a glycerol to form a phospholipid molecule? A. 1 B. 2 C. 3 D. 4
Topic 3: Movement of substances across cell membrane 1. How many fatty acid molecules combine with a glycerol to form a phospholipid molecule? A. 1 B. 2 C. 3 D. 4 Directions: Questions 2 and 3 refer to
More informationMY BIOLOGY FINAL EXAM WORKBOOK
NAME PER DATE MY BIOLOGY FINAL EXAM WORKBOOK DIRECTIONS: This study work book is due on the day of your final exam. Start now! After you have completed this study guide, you need to memorize it! 1. Look
More informationHomeostasis, Transport & The Cell Membrane. Chapter 4-2 (pg 73 75) Chapter 5
Homeostasis, Transport & The Cell Membrane Chapter 4-2 (pg 73 75) Chapter 5 Unit 5: Lecture 1 Topic: The Cell Membrane Covers: Chapter 5, pages 95-96 Chapter 4, pages 73-75 The Cell Membrane The chemistry
More informationBiology Study Guide Answers. Cells/Cell Transport
Biology Study Guide Answers Cells/Cell Transport 1 1.) All living things are made of cells. 2.) Cells are the most basic unit of structure and function in living things. 3.) Cells come from pre-existing
More informationName: Regents Exam Preparation: Vocabulary Winter Break
Name: Regents Exam Preparation: Vocabulary Winter Break 2016-2017 I. Scientific Method Design an experiment and answer the following questions below: Kyle wanted to know if watching the Giants play football
More informationWhat is the function of the cell membrane?
What is the function of the cell membrane? 1. DIFFUSION: The movement of molecules from an area of high concentration to an area of lower concentration. Why do molecules move from high concentration to
More informationHow Things Get In and Out of Cells, or gummy bears, zip lock bags or whatever!
How Things Get In and Out of Cells, or gummy bears, zip lock bags or whatever! SC.912.L.14.3 Benchmark Clarifications: Students will compare and/or contrast the structures found in plant cells and in animal
More informationChapter 8 Cells and Their Environment
Chapter Outline Chapter 8 Cells and Their Environment Section 1: Cell Membrane KEY IDEAS > How does the cell membrane help a cell maintain homeostasis? > How does the cell membrane restrict the exchange
More informationDIFFUSION AND OSMOSIS
Lab 5 DIFFUSION AND OSMOSIS OBJECTIVES Describe the process of diffusion at the molecular level; State the physical factors that determine the direction and rate of diffusion; Discuss why diffusion rates,
More informationCells and Homeostasis Vocabulary Key. Unicellular organism: An organism having only one cell but carries out all life functions
Cells and Homeostasis Vocabulary Key Unicellular organism: An organism having only one cell but carries out all life functions Multicellular: An organism with many cells, each of which is specialized to
More informationCytoskeleton. Provide shape and support for the cell. Other functions of the cytoskeleton. Nucleolus. Nucleus
Chapter 4: Cell Structure and Function Cytoskeleton The cytoskeleton is a network of fibers that organizes structures and activities in the cell. Microtubules (the largest) Intermediate fibers Microfilaments
More informationCell Membrane Diagram
Cell Membrane Diagram Draw a diagram of the cell membrane. Please include (and label): - Phospholipid bilayer (hydrophilic and hydrophobic) Protein channel An ion pump Cholesterol Gylcoproteins* Define
More informationWarm Up 12/06/2018. In a Solution of Salt Water, which substance acts as the Solvent and which substance acts as the Solute?
Warm Up 12/06/2018 In a Solution of Salt Water, which substance acts as the Solvent and which substance acts as the Solute? Cell Membrane and Cell Transport How Nutrients move in and Wastes Move Out of
More informationChapter Seven. A View of the Cell
Chapter Seven A View of the Cell Cellular Organization Cell Tissue group of cells functioning together. Organ group of tissues functioning together. Organ System group of organs functioning together. Organism
More informationWhat did Robert Hooke call the boxes that he observed in cork? Cells
What did Robert Hooke call the boxes that he observed in cork? Cells Why should I care? So, what is a cell? Smallest functional unit that can support life A bacterium is only one self-sustaining cell You
More informationThe Discovery of the Cell
The Discovery of the Cell 7-1 Life Is Cellular Review the cell in relation to: - Its definition - The origin of life - The characteristics of life - The hierarchy of biological organization - The science
More informationChapter 3.4 & 3.5 Cell Transport (Osmosis and Diffusion) = only some molecules can get in or out of the cell
Chapter 3.4 & 3.5 Cell Transport (Osmosis and Diffusion) I. Cell Membrane (cells need an inside and outside) a. separate cell from its environment b. cell membrane is the boundary c. cell membrane controls
More informationLab 3: Cellular Structure and Function
Lab 3: Cellular Structure and Function What is the basic unit of life? The simplest form of life is the cell! All living things are either: unicellular (only one cell) multicellular (many cells make one
More informationCELL STRUCTURE & FUNCTION
CELL STRUCTURE & FUNCTION Professor Andrea Garrison Biology 3A Illustrations 2010, 2013 Pearson Education, Inc. Cells Most basic unit of living system Arise by cell division from existing cell Make up
More informationDiffusion & Osmosis - Exercise 4
Diffusion & Osmosis - Exercise 4 Objectives -Define: Solvent, Solute, and Solution -Define: Diffusion, Selectively permeable membrane, Osmosis, and Dialysis -Understand rule of thumb: Concentration will
More informationUnit 3: Cellular Processes. 1. SEPARTION & PROTECTION: the contents of the cell from the. 2. TRANSPORT: the transport of in and out of the cell
Unit 3: Cellular Processes Name: Aim #14 Cell Membrane: How does the cell membrane function to maintain homeostasis? Date: _ I. The Cell Membrane: What is it? Also known as A thin structure that acts as
More informationCells. Cell as a basic unit of life. Activity: Observing onion cells. Cells
1 Cells Cell as a basic unit of life In the year 1665, Robert Hooke observed a honeycomb like structure consisting of many compartments in a thin slice of cork. He called these boxes as cells. Cell in
More informationBio 111 Study Guide Chapter 7 Membrane Structure and Function
Bio 111 Study Guide Chapter 7 Membrane Structure and Function BEFORE CLASS: Reading: Read the whole chapter from p. 124 138. Note the differences between Figures 7.2 and 7.3. We have come a long way in
More informationCell Membranes: Diffusion and Osmosis
STO-112 Cell Membranes: Diffusion and Osmosis Part 1: Diffusion Diffusion is a process by which molecules move into or out of cells. To diffuse into or out of a cell, molecules must pass through the cell
More informationCELL THEORY- EQ: What are the 3 facts of the cell theory? - pp191. EQ- Which Scientists are connected to cell discovery?
UNIT 3 - CELLS Cell theory Types of cells (prokaryotic and eukaryotic,plant and animal) Homeostasis in cells Enzymes Biomolecules Cell structure and function and processes Transport across cellular membranes
More informationCell Membrane and Transport Unit Cover Page (see guidelines on page 27)
150 P a g e Cell Membrane and Transport Unit Cover Page (see guidelines on page 27) P a g e 151 Cell Membrane and Transport Unit Front Page At the end of this unit I will: Be able to classify the categories
More informationCELL STRUCTURE AND FUNCTION. Chapter 7
CELL STRUCTURE AND FUNCTION Chapter 7 WARM UP EXERCISE Please complete the pretest that you picked up as you came in. LIFE IS CELLULAR Robert Hooke- coined the term cells The Cell Theory All living things
More informationCells 2/2/2019. Cell Theory. Prokaryotic and Eukaryotic Cells. Life on Earth. Prokaryotic and Eukaryotic Cells. Bacterial Cell. Structure and Function
Cell Theory Cells Structure and Function All living things are made of cells New cells come from pre-existing cells NO Spontaneous Generation Francesco Redi Italian 17 th century Louis Pasteur French 19
More informationPassive and Active transport across a cell membrane REVIEW MEMBRANE TRANSPORT
Passive and Active transport across a cell membrane REVIEW MEMBRANE TRANSPORT Cell (plasma) membrane Thin, flexible barrier Membranes also organize the interior of a cell. Cell organelles are defined by
More informationEach cell has its own border, which separates the cell from its surroundings and also determines what comes in and what goes out.
7.3 Cell Transport Wednesday, December 26, 2012 10:02 AM Vocabulary: Diffusion: process in which cells become specialized in structure and function Facilitated diffusion: process of diffusion in which
More informationCell Structure and Function
Cell Structure and Function Agre and cells in the news Cells Smallest living unit Most are microscopic Discovery of Cells Robert Hooke (mid-1600s) Observed sliver of cork Saw row of empty boxes Coined
More informationUnit 2: Cells. Bio 2- Human Biology
Unit 2: Cells Bio 2- Human Biology Cells vary in SIZE and STRUCTURE Depends on what they do Cytology Objectives You should be able to understand, identify, label, explain, etc: -A. Features/Organelles
More informationContents. Module A Cells and Cell Processes. Module B Continuity and Unity Of Life. Introduction to Keystone Finish Line Biology...
Contents Introduction to Keystone Finish Line Biology...5 Module A Cells and Cell Processes Unit 1 Basic Biological Principles...7 Lesson 1 Unifying Characteristics of Life BIO.A.1.1.1, BIO.A.1.2.1...8
More informationA small, membrane-bound compartment capable of performing all the basic functions of life
AP Biology The Cell The Cell Cell: A small, membrane-bound compartment capable of performing all the basic functions of life Discovery of Cells: - 17 th century - A Dutch clothing dealer named Antonie
More informationTo understand osmosis, we must focus on the behavior of the solvent, not the solute.
GCC CHM 130LL Osmosis and Dialysis Purpose: The purpose of this experiment is to observe the closely related phenomena of osmosis and diffusion as it relates to dialysis. It is hoped that you will be able
More informationCell Structure and Function. The Basic Unit of Life
Cell Structure and Function The Basic Unit of Life The Discovery of the Cell Robert Hooke The word " cell was first used in late 1665 by Robert Hooke. He looked at thin slices of cork (plant cells) under
More informationWarm Up (Discussion )
Unit 3: Cells! Warm Up (Discussion ) 1. 2. 3. 4. 5. What is a cell? Where do we find cells? What are cells made up of? What happens in a cell? How are plant and animal cells different? Cell Theory 1. Cells
More informationCellular Transport Notes
Cellular Transport Notes About Cell Membranes 1.All cells have a cell membrane a.controls what enters and exits the cell to maintain an internal balance called homeostasis b.provides protection and support
More information