"Lab 1 Diffusion Osmosis Experiment 1 2 Concentration Gradients And Membrane Permeability" Essays and Research Papers

  • Lab 1 Diffusion Osmosis Experiment 1 2 Concentration Gradients And Membrane Permeability

    Diffusion and Osmosis Experiment with a Shell-Less Egg After Three days of Testing Methods with Water and Corn Syrup Lisa July 1, 2013 Purpose To use the properties of diffusion and osmosis to see the effects of either corn syrup or water on a shell-less raw egg over a three day period. While looking to see the effects of these liquids on the raw egg, one can also apply the properties of hypotonic, hypertonic, and isotonic solutions. Introduction Cells have an outer covering called the cell...

    24-hour clock, Acetic acid, Chicken 1575  Words | 5  Pages

  • Membrane Permeability

    Experiment 5 Title: Membrane Permeability Objectives: 1. Define solvent, solute, solution, selectively permeable, diffusion, osmosis, concentration gradient, equilibrium, turgid, plasmolyzed, plasmolysis, turgor pressure, tonicity, hypertonic, isotonic, hypotonic; 2. Describe the effects of hypertonic, isotonic, and hypotonic solutions on Elodea leaf cells and onion scale leafs. Introduction: Membrane permeability is a quality of a cell’s plasma membrane that allows substances to pass in...

    Cell, Cell membrane, Cell wall 1476  Words | 5  Pages

  • Exercise 1

    Exercise 1 Cell Transport Mechanisms and Permeability Name ____________________________________________________________ Lab Time/Date ______________________________ Activity 1 Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. * The size of the pores of the membrane * The size of the molecule diffusing through the membrane 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results...

    Concentration, Diffusion, Facilitated diffusion 849  Words | 3  Pages

  • Direction and Concentration Gradients

    and concentration gradients Bradley Benton ABSTRACT In this experiment, we will investigate the effect of solute concentration on osmosis. A semi‐permeable membrane (dialysis tubing) and sucrose will create an osmotic environment similar to that of a cell. Using different concentrations of sucrose (which is unable to cross the membrane) will allow us to examine the net movement of water across the membrane. INTRODUCTION A major determinant of diffusion in a biological system is membrane permeability...

    Cell membrane, Chemistry, Concentration 916  Words | 3  Pages

  • 1

    A1 1. Firstly, the size of the material will affect the rate of diffusion. If the size of material is larger, the diffusion rate will be slowly. The size of the material is smaller, the diffusion will be quickly. Moreover, the concentration of gradient can also affect the rate of diffusion. The molecules will spread form the area of high concentration to the area of low concentration. After a period of time, the molecule will even throughout a space that is equilibrium. The concentration of gradient...

    Chemistry, Diffusion, Facilitated diffusion 1088  Words | 3  Pages

  • Biology Osmosis Lab Report

    Osmosis Lab Report by Evan Gerber Claire Cambron First Lab Report Wednesday 10:30am February 20, 2013 Theresa Gburek Abstract The major objective of the experiment was to test the effect of the concentration gradient on the diffusion rate. It was hypothesized that the greater the stronger the concentration gradient, the faster the rate of diffusion would be. To test this, dialysis tubes were submerged in different concentration fructose solutions. We weighed the tubes at specific...

    Chemistry, Concentration, Diffusion 1887  Words | 6  Pages

  • Membrane Permeability

    most important characteristic is that it is enclosed within a cell membrane called a plasma membrane. The plasma membrane is by-layer composed of lipids and embedded proteins. This membrane is semi-permeable due to its hydrophobic and hydrophilic regions. At the boundary of every cell the plasma membrane functions as a selective barrier that allows nutrients to be brought in and/or removed from inside the cell. The cells permeability and transport mechanisms allow for this occurrence and it is vital...

    Cell, Cell membrane, Diffusion 2133  Words | 7  Pages

  • Lab 1 Review Sheet

    Physioex 9.0 Review Sheet Exercise 1 Cell Transport Mechanisms and Permeability Name: Jeffery Cook Lab Time/Date: 12pm 2/09/2015 Activity 1 Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. a. Two variables that affect the rate of diffusion are size and whether or not there is an electrical or concentration gradient. 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction...

    Diffusion, Ion, Molecular diffusion 1082  Words | 3  Pages

  • Diffusion and Osmosis

    Lab Activity No. __ Diffusion and Osmosis I. Introduction Diffusion is the transfer of molecules (or ions) from an area of higher concentration to a lower concentration, while osmosis is the transfer of water from a higher concentration to a lower concentration. II. Objectives 1. Demonstrate diffusion and osmosis across membrane. 2. Examine the relation of membrane permeability to diffusion and osmosis. III. Materials 2 thistle tubes, 2 big beakers, 4 tube clamps to fit iron stands...

    Chemistry, Diffusion, Leaf 915  Words | 4  Pages

  • Physio Ex 9.0 Activity 1 Cell Transport Mechanisms and Permeability

    Transport Mechanisms and Permeability: Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. Molecular weight affects the rate of diffusion because the bigger the size of the molecule the longer it will take to diffuse. Membrane size is another variable that affects the rate of diffusion because if the membrane’s pores are small it will take molecules longer to diffuse though it than if the pores were larger. Also, membrane thickness is a variable...

    Diffusion, Facilitated diffusion, Ion 1338  Words | 5  Pages

  • Diffusion and Osmosis Lab

     Examining Diffusion and Osmosis Introduction: Purpose: 1. To simulate and observe the diffusion of solutes and the osmosis of water through a semipermeable membrane through color change and sugar tests. 2. To speculate osmosis occurring in dialysis bags and potato cores by comparing percentage change in masses. Background information: Molecules are always in random, constant movement due to their kinetic energy. This causes the molecules of a cell to move around and bump into each other...

    Cell, Cell membrane, Cell wall 1363  Words | 5  Pages

  • Diffusion and Glucose

    Physioex 9.0 Review Sheet Exercise 1 Cell Transport Mechanisms and Permeability Name Lab Time/Date ___ Activity 1 Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. Size of material and concentration 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction? The molecules were too large to pass through. This is what I predicted...

    Chlorine, Diffusion, Molecular diffusion 1471  Words | 7  Pages

  • Osmosis and Diffusion Lab

    Osmosis and Diffusion Title: Diffusion and Osmosis AP Lab 1 Purpose: The purpose of this activity is to determine the effects of a selectively permeable membrane on diffusion and osmosis between two solutions separated by a membrane. Hypothesis: Procedures: In lab manual Material: In lab manual Background Information: Data: Table 1 Diffusion of glucose and iodine. | Color | Glucose | Time | Dialysis Bag | Beaker | Dialysis Bag | Beaker | Start | | | | | 30 minutes...

    Cell biology, Dialysis tubing, Diffusion 600  Words | 3  Pages

  • Physioex 8.0 Experiment 1

    Lab Report One Exercise Five Activity One “Simulating Simple Diffusion” Activity Two “Simulating Facilitated Diffusion” Jessica Ogola Anatomy and Physiology 2401 Dr. Denyse Jones 02/02/2012 Objective: The objective of this experiment is to perform the simulation of the movement of solutes from a higher concentration to a lower concentration within a given amount of time. The goal of the exercise is to provide a simulation for the process of the facilitated diffusion of...

    Cell membrane, Diffusion, Glucose 1188  Words | 5  Pages

  • Diffusion of Osmosis

    Diffusion Experiment: Osmosis in Sucrose Solutions Abstract We used dialysis tubing to simulate a semi-permeable membrane. Since molecules diffuse from their higher concentration to their lower concentration, water will move across the membrane in response to this concentration. While conducting this lab we were able to observe passive transport through diffusion and osmosis. Introduction Osmosis is a specialized case of diffusion that involves the passive transport of water. When...

    Chemistry, Concentration, Dialysis tubing 786  Words | 3  Pages

  • osmosis lab

    Osmosis and Diffusion Lab Introduction: Osmosis occurs when different concentrations of water are separated by a selectively permeable membrane. Osmosis is the movement of water across selectively permeable membranes. Purpose: In this experiment that we performed we will learn about osmosis using dialysis membrane, a selectively permeable cellulose sheet that permits the passage of water but obstructs passage of larger molecules. Hypothesis: My prediction is that increasing sucrose...

    Dialysis, Dialysis tubing, Diffusion 570  Words | 3  Pages

  • PhysioEx 9.1 Lab 3 Activity 1

    Activity 1: The Resting Membrane Potential Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. What is the approximate concentration of K+ inside a typical cell (intracellular concentration)? You correctly answered: a. 150 mM 2. What is the approximate concentration of K+ outside a cell (extracellular concentration)? You correctly answered: b. 5 mM 3. What is the approximate concentration of Na+ inside a cell (intracellular concentration)? You correctly...

    Action potential, Cell membrane, Electric charge 777  Words | 5  Pages

  • Cell Transport Mechanisms and Permeability

    REVIEW SHEET EXERCISE 1 Cell Transport Mechanisms and Permeability NAME: LAB TIME/DATE: 1. Match each of the definitions in Column A with the appropriate term in Column B. Column A Column B __E__ term used to describe a solution that has a lower concentration of solutes compared to another solution _G___ term used to describe a solution that has a higher concentration of solutes compared to another solution _A___ the movement of molecules from an area of higher concentration to an area of lower...

    Concentration, Diffusion, Membrane biology 896  Words | 3  Pages

  • Diffusion and Osmosis

    Bio 1113, Lab 3: Diffusion and Osmosis Osmolarity of Plant Cells In this class, we learned about hypertonic, hypotonic, and isotonic solutions. Hypertonic solutions have a higher concentration of solutes outside of the membrane, hypotonic solutions have a lower concentration of solutes outside the membrane, and isotonic solutions have an equal amount of solutes inside and outside of the membrane (Morgan & Carter, 66). When the solute concentration is not equal...

    Chemistry, Concentration, Diffusion 1606  Words | 5  Pages

  • Lab 4 Diffusion and Osmosis

    1. Diffusion and Osmosis, June 4, 2013 2. Purpose: The purpose of this lab is to help give visual understanding of diffusion which is a solution of high concentration spontaneously (no energy required) moving to an area of low concentration. Also taking a look at osmosis, which is the movement of chemicals across the cell membrane. Osmosis requires some type of energy to be put in for this to happen. After these experiments we should have a better idea and visualization of how chemicals transfer...

    Carbohydrate, Cell, Chemistry 657  Words | 5  Pages

  • Exercise 1 Physioex 9.0

    Exercise 1: Cell Transport Mechanisms and Permeability Worksheet Student Name: Student ID# Student instructions: Follow the step-by-step instructions for this exercise found in your lab manual and record your answers in the spaces below. Submit this completed document by the assignment due date found in the Syllabus. Rename this document to include your first and last name prior to submitting, e.g. Exercise1_JohnSmith.doc. Please make sure that your answers are typed in RED. Grading:...

    Diffusion, Facilitated diffusion, Ion 1242  Words | 7  Pages

  • Review a and P Lab 1

    REVIEW SHEET EXERCISE 1 Cell Transport Mechanisms and Permeability NAME: LAB TIME/DATE: Simple Diffusion 1. The following refer to Activity 1: Simulating Dialysis (Simple Diffusion). Which solute(s) were able to pass through the 20 MWCO membrane? None of them did According to your results, which solute had the highest molecular weight? Albumin Which solute displayed the highest rate of diffusion through the 200 MWCO membrane? Na+CI Using the data from Chart 1, explain the relationship...

    Cell membrane, Diffusion, Facilitated diffusion 524  Words | 3  Pages

  • Diffusion and Osmosis

    The Effects of Osmosis and Diffusion The experimentation of last week’s lab was in order to test the many effects of diffusion and osmosis amongst four experiments. One such experiment was testing the effects of molecular weight on diffusion in relation to the use of Agar. The methods performed included the use of two acids, HCl and acetic acid. Both acids were placed into an Agar-filled dish and, over increments of 15 minutes, data collection was taken based off the diffusion rate and the diameter...

    Cell wall, Chemistry, Diffusion 1985  Words | 6  Pages

  • AP Bio Osmosis and Diffusion lab

    Diffusion and Osmosis Lab Introduction: 1) The relationship between the rate of diffusion, volume and surface area is that the surface area of a subject somewhat correlates with the volume of the object. When the surface area and volume are set up as a ratio, this gives a good idea as to how fast the rate of diffusion will be. The higher surface area to volume ratio, the faster the rate of diffusion. This is because then there is more surfaces to diffuse through and there materials to diffuse...

    Cell, Cell biology, Cell wall 2614  Words | 7  Pages

  • Diffusion Osmosis Lab Report

    Period 1  October 12, 2012  Diffusion and Osmosis Shown In Solutions Section 1: Abstract This lab, title Diffusion and Osmosis, was centered around the diffusion across a cellular membrane and how exactly materials move and diffuse in concentrations. Both diffusion and osmosis are forms of movement that are part of passive transport dealing with cell membranes. Diffusion is where the solutes move from an area of high concentration to a low concentration. Water goes through the cell membranes by diffusion...

    Cell, Cell membrane, Cell wall 1308  Words | 3  Pages

  • Osmosis Lab Report

    Osmosis Rates in Artificial Cells Daniel George Department of Biology Grand Valley State University 1 Campus Drive Allendale, MI 49401 georged@mail.gvsu.edu Abstract The lab for this paper was conducted for the topic of osmosis, the movement of water from high to low concentration. Five artificial cells were created, each being filled with different concentrated solutions of sucrose. These artificial cells were placed in hypertonic, hypotonic, or isotonic solutions for a period of 90...

    Cell biology, Concentration, Diffusion 1606  Words | 5  Pages

  • Physio 9.0 Lab 1:3

    Exercise 1: Cell Transport Mechanisms and Permeability: Activity 3: Simulating Osmotic Pressure Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. Which of the following is true of osmosis? You correctly answered: c. It is a type of diffusion. 2. Which of the following occurs when a hypertonic solution is added to cells? You correctly answered: d. The cells shrink. 3. The variable that affects osmotic pressure is You correctly answered: a. the concentration...

    Concentration, Diffusion, Membrane biology 972  Words | 3  Pages

  • Physioex 8.0 Exercise 1

    EXERCISE 1 Cell Transport Mechanisms and Permeability 1. Match each of the definitions in Column A with the appropriate term in Column B. |Column A |Column B | |__E__ term used to describe a solution that has a lower |a. diffusion | |concentration of solutes compared to another solution |b. facilitated diffusion ...

    Chemistry, Concentration, Diffusion 653  Words | 4  Pages

  • Diffusion and Osmosis

    Osmosis is a passive movement of water through a selectively permeable membrane moves from an area of higher concentration to an area of lower concentration. In this lab, we can determine the direction of diffusion of small molecules by measuring the diffusion of small molecules through dialysis tubing. This tubing acts as a selectively permeable membrane, and allow to pass larger molecules slowly. Introduction: Cells have kinetic energy and it causes the molecules of the cell to move around...

    Chemistry, Concentration, Diffusion 884  Words | 3  Pages

  • LAB REPORT 1 A P

    Biology 120 Lab Report 1 Name: Samantha Sweeney Use complete sentences to type your answers to the following questions, or type your answers into the table. You may type them in this word document, then print it out and bring it to lab. Remember, no handwriting is permitted. Do NOT copy information from a textbook, journals, fellow students, or the Internet! Paraphrased material must include correct citations. 1. A. Explain the differences between passive and active transport across cell...

    Cell membrane, Diffusion, Membrane biology 1141  Words | 3  Pages

  • Diffusion and Osmosis of Solutes and Water Across a Membrane

    Diffusion and Osmosis of Solutes and Water Across a Membrane Brittany Bacallao Nova Southeastern University Abstract: This experiment gave a visual understanding of osmosis and diffusion. The first experiment proved that solutes would move down a concentration gradient if permeable to the selective membrane. The second experiment proved different solute concentrations affect the movement of water, depending on the solute concentration inside the cell. The purpose of this lab was to look for...

    Chemistry, Concentration, Diffusion 2179  Words | 6  Pages

  • Lab Cell Membrane

    LAB REPORT 1 - LAB 7 CELL MEMBRANE FUNCTION Marisela Camacho Legarreta June 30, 2013 ACTIVITY 1 INTRODUCTION Be aware that all molecules have kinetic energy, which means that is an active energy that is always in motion. Molecules move in all different ways and this create an evenly distributed movement which is best known as diffusion. Diffusion is the movement of molecules from a region of their higher concentration to a lower concentration. METHODS Check the reaction of different...

    Cell membrane, Concentration, Diffusion 990  Words | 4  Pages

  • phisiology lab

     Exercise 1: Cell Transport Mechanisms and Permeability: Activity 2: Simulated Facilitated Diffusion Lab Report Pre-lab Quiz Results
You scored 50% by answering 2 out of 4 questions correctly. 1. Molecules need a carrier protein to help them move across a membrane because Your answer : a. they are not lipid soluble.
Correct answer: d. they are lipid insoluble or they are too large. 2. Which of the following is true of facilitated diffusion?
You correctly answered: c. Movement is passive and...

    Cell membrane, Concentration, Diffusion 583  Words | 4  Pages

  • Lab 3

    Brittany Bryant Lab 3: Cell Transport Mechanisms and Permeability Purpose The purpose of this lab is to teach me simulating dialysis, simulating facilitated diffusion, simulating osmotic pressure, simulating filtration, and simulating active transport. Hypothesis If I increase the concentration of sodium chloride from 9mM to 18mM in the left beaker, then the rate of diffusion will increase, because concentration is a variable that affects the rate of diffusion. Materials & Methods ...

    Chemistry, Chlorine, Concentration 1313  Words | 6  Pages

  • The Effects of Concentration on Osmosis

    Introduction: This experiment was used to examine the hypothesis that: Osmosis is dependent on the concentrations of the substances involved. Diffusion is the passage of solute molecules from an area of high concentration to an area of low concentration (Campbell & Reece, 2005). An example is ammonia diffusing throughout a room. A solute is one of two components in a chemical solution. The solute is the substance dissolved in the solution. The solvent, the other component, is any liquid...

    Chemistry, Concentration, Diffusion 1446  Words | 6  Pages

  • physio ex activity 1

    Exercise 1: Cell Transport Mechanisms and Permeability: Activity 2: Simulated Facilitated Diffusion Lab Report Pre-lab Quiz Results You scored 25% by answering 1 out of 4 questions correctly. 1. Molecules need a carrier protein to help them move across a membrane because Your answer : c. they are too large. Correct answer: d. they are lipid insoluble or they are too large. 2. Which of the following is true of facilitated diffusion? Your answer : d. Movement is active and down a concentration gradient...

    Diffusion, Facilitated diffusion, Glucose transporter 521  Words | 4  Pages

  • Osmosis/Diffusion

    Introduction: Diffusion and osmosis are passive processes of transport. Passive transport involves no disbursement of energy by the cell. Diffusion movement is from high concentration to low concentration, which the driving force for this type of movement is kinetic energy particles themselves. Which crystal (Methylene blue, solid or Potassium Permanganate KMnO4-purple) will move further than the other due to the driving force (kinetic energy)? My prediction is that Potassium Permanganate KMnO4-...

    Chemistry, Concentration, Diffusion 917  Words | 3  Pages

  • Diffusion and Osmosis Lab Report

    Diffusion and Osmosis NGSSS: SC.912.L.14.2 Relate structure to function for the components of plant and animal cells. Explain the role of cell membranes as a highly selective barrier (passive and active transport). SC.912.L.14.3 Compare and contrast the general structures of plant and animal cells. Compare and contrast the general structures of prokaryotic and eukaryotic cells. AA Background: (Source: www.explorelearning.com) Diffusion is the process in which there is a net movement of...

    Cell, Cell membrane, Cell wall 1152  Words | 5  Pages

  • Water Flow Across Cell Membranes

    ACROSS CELL MEMBRANES pg. 1 Lab Report 1 Water Flow Across Semi-Permeable Membranes WATER FLOW ACROSS CELL MEMBRANES pg.2 WATER FLOW ACROSS CELL MEMBRANES The movement of water across semi-permeable membranes as it relates to the laws of thermodynamics and energy flow with the diffusion of molecules...

    Cell, Cell biology, Cell membrane 1529  Words | 6  Pages

  • Science Experiment Report Osmosis

    Osmosis in potato cells Aim: To view and examine the effect different concentrations of sucrose solution has on the movement of water across the cell membrane. Hypothesis: That the potatoes will either increase or decrease in mass, due to the effect of the different concentrations. Osmosis will occur. Apparatus: * Fresh potatoes * Apple corer * Scalpel * Petri dishes X 10 * 50ml measuring cylinder * Distilled water * Paper towelling * Sucrose solutions: ...

    Chemistry, Concentration, Diffusion 1088  Words | 4  Pages

  • Osmosis: Concentration and Potato Tissue

    Unit 4 Lab – Effects of Osmosis on Living Tissue Assignment Total: 35 Points Course Weight: 6 Pre-Lab Preparation - Review the following resources to complete this assignment: Textbook: Chapter 5, pg. 83-86 Mastering Biology / Study Area / Chapter 05 – The Working Cell / Student Home Key Concepts Video: Plasmolysis Video: Turgid Elodea Activity: Membrane Structure Activity: Diffusion Activity: Osmosis and Water Balance in Cells Bioflix: Membrane Transport Additional Resources Blast Animation: Diffusion...

    Cell wall, Chemistry, Concentration 1638  Words | 7  Pages

  • Osmosis and Lab

    Breanna Gomez Miss. Pagano Honors Biology April 6, 2013 The Effect of Sugar and Salt on Osmosis and Diffusion Introduction: Osmosis is the diffusion of water through a selectively permeable membrane. A selectively membrane means that the cell membrane can only control over certain things that come in and out through the membrane. A membrane is just the structure surrounding the cell. Throughout osmosis, the cell could either get larger, or smaller. If the cell gets larger it means that it was...

    Cell, Dialysis tubing, Diffusion 1322  Words | 4  Pages

  • The Effect of Concentration Gradient on Osmosis

    The Effect of Concentration Gradient on Osmosis Abstract: Osmosis is the passive movement of water from an area of higher concentration to an area of lower concentration, usually across a membrane (Thorpe 2013). Tonicity is the ability of a solution surrounding a cell to gain or lose water (Reece 2011). There are many factors that affect the rate of osmosis. These include temperature, surface area, difference in water potential, pressure, light and dark and most importantly what we will be...

    Diffusion, Liquid, Solution 639  Words | 7  Pages

  • Physioex 9 exercise 1

    PHYSIO EX 1 Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. The temperature of the solutions and the difference in concentration of the ion or molecule between the sides of the membrane 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction? Since the chemical formula for urea is (NH2)2CO and its molecular weight is about 60. It will not diffuse through...

    Diffusion, Ion, Membrane biology 924  Words | 4  Pages

  • Essay on Apbio Osmosis and Diffusion

    Lab Report on Osmosis and Diffusion Biology 1, Period 3 March 15, 2010 Lab Team: Jason Perez, Kicia Long, Chris McLemore Purpose: The purpose of this lab is to observe the acts of passive transport: diffusion and osmosis in a model membrane system. The experiment will show how molecules in solution move from areas of higher concentration to areas of lower concentration. The model membrane is dialysis tubing. Materials Used 2.5 cm dialysis tubing 15% glucose...

    Dialysis tubing, Diffusion, Enzyme 750  Words | 3  Pages

  • Osmosis and Water Potential

     Osmosis and Water Potential Year 11 Emary Venter INTRODUCTION: The cell is the basic unit of living things, and is made up of multiple organelles. Organelles are membrane bound subdivisions, each specialised for a specific function. This experiment looks at the Plasma Membrane, which is a semipermeable layer surrounding the cell. It’s primary job is to control what goes in and out of the cell. Molecules can move across this membrane in either an active movement or a passive movement...

    Chemistry, Concentration, Diffusion 1337  Words | 5  Pages

  • Diffusion and Osmosis Lab

    Diffusion and Osmosis Experiment Methods/Materials: 7.1 Experiment: Rate of Diffusion of Solutes In the initial set up of this experiment I had 2 sets of 3 screw-cap test tubes that had each been half-filled with 5% gelatin and 1-mL of the correct dye (either potassium dichromate, aniline blue, or Janus green) in each of the test tubes. I labeled the 3 test tubes of set 1 with which die they contained and marked them “5 ˚C”. Then with the other set I did the same exact thing, except I labeled...

    Blood, Cell, Cell wall 2132  Words | 6  Pages

  • Osmosis: Plasmolysis & Hemolysis

    Osmosis The purpose of this lab is to study how membranes of plant and animal cells react when exposed to different solutions. The first experiment involves purple onion skin and the second involves rat blood in various solutions. I needed to understand certain terms before preforming this lab to be able to efficiently explain what is happening to the cells. Diffusion is the tendency of a substance to move down its concentration gradient from a more concentrated to a less concentrated area. ...

    Bacteria, Cell, Cell membrane 1408  Words | 4  Pages

  • Osmosis/ Potato Lab Ap Bio

    Osmosis Lab Introduction: In order for cells to interact with their environment, molecules must be able to move through the cell membrane. Movement within the cell occurs by diffusion. Molecules move through the cell membrane by osmosis. Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration. This happens because of random molecular motion. Molecules move around randomly until there is an even mixture throughout cell and mixture. The overall...

    Cell biology, Cell membrane, Cell wall 1114  Words | 4  Pages

  • Osmosis Experiment

    Osmosis Experiment Dennis M. Feliciano Grand Canyon University BIO100L Biology Concepts Lab June 25, 2011 Osmosis Experiment Materials Grapes (unblemished) Raisins (larger is better) Water Salt Four small containers (i.e., drinking cups or clear glasses) A metric ruler Methods and Procedure Place 1 cup (236 ml) of water in each of the 4 containers. In 2 of the containers, add 1 tablespoon (14.8 ml) of table salt and mix well. Measure the length and width of a raisin and place...

    Cell membrane, Chemistry, Concentration 1626  Words | 6  Pages

  • Lab Report 1: Cell Transport Mechanisms and Permeability Using Physioex 8.0

    Lab Report 1: Cell Transport Mechanisms and Permeability Using PhysioEx 8.0 Introduction The purpose of these experiments is to examine the driving force behind the movement of substances across a selective or semiperpeable plasma membrane. Experiment simulations examine substances that move passively through a semipermeable membrane, and those that require active transport. Those that move passively through the membrane will do so in these simulations by facilitated...

    Adenosine triphosphate, Cell, Diffusion 2033  Words | 6  Pages

  • Osmosis Lab

    Osmosis Lab March 22, 2013 Amanda L***** Introduction Transport into and out of your cells is important because without cellular transport, the cell could not move material into or out of the cell. This would lead to its inability to survive because cells must take in oxygen and food, and expel waste material that could inhibit the cell from performing in the body. A type of cell transport in particular is passive transport. Passive transport is a kind of transport by which ions or molecules move...

    Cell, Cell biology, Cell membrane 1292  Words | 5  Pages

  • Osmosis and Diffusion

    Introduction Osmosis is the movement of water from a region of higher concentration ( hypertonic ) to a region of lower concentration ( hypotonic solution ) through a cell membrane or other semi-permeable membrane until an equilibrium is reached. It is a special case of diffusion called “ passive transport “ which means no energy is required. Diffusion is the movement of a substance by which the molecules move from a region of higher concentration to a region of lower concentration. Aim Our...

    Chemistry, Concentration, Mass 1164  Words | 6  Pages

  • Osmosis

    Lab 1 7.2 Osmosis Introduction Osmosis is the diffusion of water across a selectively permeable membrane in response to a differing overall solute concentration (Starr, Evers, and Starr 85). Most polar molecules such as sugars and proteins cannot freely pass through a lipid membrane; although water molecules are polar they are small enough to pass though the membrane freely. This special case of diffusion that involves the movement of water molecules across a membrane is called Osmosis. This...

    Cell, Cell membrane, Cell wall 1254  Words | 4  Pages

  • Biology lab report diffusion

    October Mailbox #55 Affects of Osmosis and Diffusion Introduction: Perfume spreads in a room, hands bloat when left in water for too long (shriveling is a common misconception), a tea bag’s contents diffuse through the water. These are all examples of diffusion and osmosis. These phenomena happen everyday and people don’t realize what is actually happening. The purpose of the lab is to see the effects of diffusion and osmosis. In part B, the higher the concentration of solute, the higher the mass...

    Chemistry, Concentration, Dialysis tubing 919  Words | 4  Pages

  • Osmosis and Diffusion

    Joshua Annan Biology Section-04 Diffusion and Osmosis December 14,2012 Alexis, Adiba, Elliot and Joey Purpose: The purpose of this lab is to get a better understanding of osmosis and diffusion in molecules. We will do this by studying different solutions and how they move through the permeable membrane. Hypothesis: The three different possible predictions were the lab were that the mass would stay the same, the mass will increase, or the mass will decrease...

    Chemistry, Diffusion, Glucose 1104  Words | 4  Pages

  • Lab 3 - Cells

    ACTIVITY 1 Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. __The size and the concentration. ___ 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction? __ The molecules were to large to go through. My results matched._ 3. Describe the results of the attempts to diffuse glucose and albumin through the 200 MWCO membrane. How well did the results compare with your...

    Diffusion, Facilitated diffusion, Molecular diffusion 869  Words | 3  Pages

  • Physiology Lab report

    Introduction: The purpose of this lab was to observe passive transport of molecules through diffusion and osmosis. We had to keep close observation on two dialysis bags and explain how we measured the change in weight as diffusion and osmosis occurred throughout the experiment. Cells produce an energy called Kinetic Energy.  This causes molecules of the cell to move around and bump into each other. Diffusion is one result of this molecular movement.  Diffusion is the passive movement of molecules...

    Chemistry, Concentration, Dialysis tubing 491  Words | 3  Pages

  • osmosis and celery lab experiment

    DIFFUSION AND OSMOSIS Chapter 3 of your textbook explains diffusion and osmosis. Diffusion is simply the net movement of atoms or molecules from a region of higher concentration to a region of lower concentration. The force behind the movement is heat or kinetic energy (also called Brownian motion). Diffusion occurs when you spill water on the carpet floor and it spreads out, or when you open a bottle of perfume and it leaves the bottle and spreads throughout the air in the room. Osmosis is a...

    Cell biology, Cell wall, Diffusion 1013  Words | 4  Pages

  • Lab Report on Osmosis

     Introduction A computerized simulation experiment will be conducted in order to study the cell transport mechanism via the cell’s selectively permeable membrane and passive processes of simple and facilitated diffusion. The plasma membrane is a gateway which allows nutrients to enter the cell and keep undesirable substances out, hence, making it selectively permeable. One method of transport is called active transport, which uses ATP to transport substances through the membrane. The other is called passive...

    Chemistry, Diffusion, Glucose 1287  Words | 5  Pages

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