"Osmosis Polarity And Tonicity Lab Report" Essays and Research Papers

  • Osmosis Polarity And Tonicity 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

  • Osmosis Lab Report

    zmosis The IB Lab Report Measuring osmosis 1. Introduction My experiment is about osmosis on a potato and if or the quantity of salt affects osmosis. I would do the experiment with 5 potatoes cut into squares all the potatoes weight the same so the weight can`t be a variable the I put the potatoes on 5 different plastic cups with different amounts of salt and then I weight them again to see if the quantity of salt affected the osmosis of potatoes 1a. Research question ¿Does the quantity...

    Affect, Drinkware, Graph theory 696  Words | 4  Pages

  • Osmosis Lab Report

    Formal Scientific Lab Report Osmosis Katy Hunter 10-26-2012 Abstract: The objectives of this lab was to be able to create models of cells with the dialysis tubing to show us how the plasma membrane is selectively permeable, to study the effects of osmosis on a model cell, and to foresee the effect of solute concentration on osmosis. In order to achieve these objectives, we had to fill the dialysis tubing with either water, or different amounts of sucrose. We then tied off the tubes and put...

    Chemistry, Concentration, Diffusion 1127  Words | 4  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

  • Osmosis and the Egg Lab Report

    Osmosis and the Egg Lab Report  By: N. Mullins  Date: January 20, 2011    Introduction  This lab was designed to explain the different things osmosis does. Osmosis is the  diffusion of water across a semi permeable membrane. Over three days we tested the egg  in three different solutions to observe the changes. On Day 1, the main question we  answered was what happened to the egg when it was placed in vinegar? Before doing this  I came to my hypothesis was that the vinegar would eat away at the shell and eventually ...

    Acid, Bacteria, Egg 1334  Words | 3  Pages

  • Osmosis Lab Report

    NAME: Donna Ha TITLE: Measuring the Rate of Osmosis Using “De-shelled” Chicken Eggs INTRODUCTION: In order to fully understand the concept of this experiment, one must first be introduced to diffusion. Diffusion is a spontaneous process by which molecule particles move from one area that is highly concentrated to another area in which its concentration is lower. Cells contain fluids and are surrounded by fluids; in order for a cell to function it is required to be in a balanced state. The...

    Concentration, Egg, Egg yolk 2530  Words | 7  Pages

  • Lab Report Osmosis

    The effect of osmosis on artificial cells with different concentrations of sucrose Alex McRae Biology 120-902 Grand Valley State University 1 Campus Drive Allendale, MI 49401 mcraeal@mail.gvsu.edu Abstract In this study, we tested the validity of osmosis in artificial animal cells. Osmosis is the diffusion of free water across a membrane. The purpose of the study was to calculate the rate of osmosis in artificial cells containing different...

    Cell biology, Concentration, Diffusion 1689  Words | 5  Pages

  • Osmosis Lab Report

    Osmosis Lab Research Question: In this lab, our goal was to look at the effects of different sucrose concentrations on osmosis in potatoes. Our research question was “How do the sugar levels affect the rate of osmosis in potatoes?”. Background Information: Solutions consist of solutes dissolved in a solvent. In all living organisms there are many different types of solutes including salts and sugars. The major solvent is water. There are different concentrations of solutes in various regions...

    Chemistry, Concentration, Diffusion 966  Words | 4  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

  • Lab Report on Osmosis

    Potato Osmosis and Diffusion Lab Report Emily Cocq Research Question: Will there be a difference in the experimented potato cores after being subjected to high concentrations of sugar? Introduction: Water can move through protein channels in cell membrane/cell walls. The water will move due to the water potential of the cells. If there is a greater concentration of solutes (chemicals) inside the cell than outside the cell and the chemicals can not move, then water will respond by moving...

    Carbohydrate, Concentration, Distillation 1195  Words | 4  Pages

  • Diffusion Osmosis Lab Report

    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. Osmosis is specifically...

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

  • Gummy Bear Osmosis Lab Report

    Tiffany Parker Mr. Taylor Biology 6th period 2/12/15 Gummy Bear Osmosis Lab Report Purpose: The purpose of this lab is to measure the amount of Osmosis in different types of solutions and to see how a cell would react in different types of solutions. Hypothesis: My hypothesis for this experiment is that the Gummy bear will absorb more of the plain tap and sugar water and the salt water will shrink the gummy Procedure: Materials- 3 clear cups, one spoon, 3 gummy bears, timer, tap water, salt, sugar...

    Chemistry, Confectionery, Flavor 555  Words | 3  Pages

  • tonicity on cell membrane lab report

    Effects of Tonicity on Cell Membrane Abstract The purpose of this experiment was to determine the effects of tonicity on a cell membrane using red blood cells, potato strips and three unknown solutions (A, B, C). First three slides were prepared containing RBC’s and unknown solutions A, B and C. A control slide was prepared only using RBC’s. After observing each slide under the microscope it was determined that unknown solution A was hypertonic because the RBC appeared to have shrunk. The...

    Cell, Cell biology, Cell membrane 2157  Words | 8  Pages

  • Lab Report

    Running head: OSMOSIS AND RED BLOOD CELLS Lab Report 1 – Osmosis and Red Blood Cell Experiment Anatomy and Physiology Lab Janet Newton Anatomy and Physiology, BIOL 1611L Dr. Hamid Eltagani September 2, 2014 INTRODUCTION In order to study the effect of molecular polarity and size on membrane permeability, students were asked to place red blood cells into various solutions to determine the outcome of those solutions by means of osmosis. Osmosis is a process in which...

    Blood, Blood cell, Blood cells 1005  Words | 6  Pages

  • Osmosis lab report

    Aiko Okada How the potato slices are affected in different levels of concentrated water Introduction: In class, we are learning about the process of osmosis, and how osmosis works with the potato slices. As we learned that the potato slices with salt is bendable, we did an experiment with a different concentration of water. Aim- Aim is to observe how the potato slices changes in several levels of concentrated solutions, from distilled water to 5% salty water. Therefore, the aim is to figure out...

    Chemistry, Concentration, Distilled water 732  Words | 3  Pages

  • biology lab report of osmosis

    experiment to investigate the osmosis in plant cells. AIM: To determine how the osmosis in potato cells measured by change in length of potato cylinders varies with change in concentration of sucrose. MATERIALS REQUIRED: Potatoes Cork borer Sucrose Distilled water Digital balance Filter paper Knife Glass rod 10cm/100mm ruler 100ml beakers – 15 VARIABLES: INDEPENDENT VARIABLE: The concentration of sucrose solution taken in g dm-3.DEPENDENT VARIABLE: Osmosis of plant cells measured by...

    Chemistry, Concentration, Measurement 1377  Words | 4  Pages

  • Osmosis Lab Report

    Introduction The reason of this experiment was to identify the properties and effects of osmosis. Osmosis can be defined as the diffusion of water through a selectively permeable membrane. (Miller/Levine) Osmosis occurs when there is an area of higher and lower concentration. Osmosis is a type of diffusion. Diffusion is when molecules move from an area of higher concentration to an area of higher concentration. The three types of concentrations are hypotonic, hypertonic, and isotonic. When in comparison...

    Chemistry, Concentration, Diffusion 839  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

  • Osmosis Lab

    The Effect of Osmosis on a Potato Cell October 12th 2012 Osmosis Lab Purpose: The purpose of this lab is to investigate the effects of osmosis on a potato cell as it is immersed for a period of time in solutions of different water concentrations. Hypothesis: If the potato is immersed into the distilled water, then it will be the heaviest out of the three. This is because water is at the lower is moving toward the area of higher concentration, which in this case is the potato. This...

    Cell wall, Concentration, Mass 1566  Words | 6  Pages

  • Lab Report on Osmosis

    - | - | 100 | + | + | - | - | 200 | + | + | - | + | Activity 2 (Table 2): Facilitated Diffusion Rates (glucose transport rate, mM/ min) Facilitated Diffusion (Glucose Transport rate, mM/min) Discussion and Conclusions In the first lab experiment (refer to Table 1), Simulating Dialysis (Simple Diffusion), the computerized simulation demonstrated the passage of water and solutes through semi permeable membranes in cells down its concentration gradient. The four membranes used in the...

    Chemistry, Diffusion, Glucose 1287  Words | 5  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

  • Osmosis Lab

    Osmosis of Sucrose Solutions of Different Molarities Through Dialysis Tubing (a Semi-Permeable Membrane) I. DESIGN A. PROBLEM/RESEARCH QUESTION 1. How does increasing molarity of sucrose affect osmosis through dialysis tubing? B. VARIABLES 1. The independent variable in this lab is the molarity of sucrose each dialysis bag is filled with. The time (30 minutes), the temperature (23C) and the type of dialysis tubing used are all constants. 2. The dependent...

    Concentration, Dialysis, Dialysis tubing 1797  Words | 6  Pages

  • Osmosis Lab

    Explain why, USING THE TERMS OF OSMOSIS from this activity. While grilling a steak it is better to put salt on it before you grill it so while it is grilling osmosis will occur and it will retain the salt. So instead of it just sitting on top of the steak it will be on the inside. Giving it more flavor of the salt while eating it. 6) Why does salad become soggy and wilted when the dressing has been on it for a while? Explain why, in terms of osmosis. The reason why salad...

    Cell, Cell biology, Cell membrane 669  Words | 4  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 Lab

    The Osmosis Lab SHS Lacrosse Monster #2 Dates performed: 10/10/11 and 10/11/11 Introduction: The purpose of the laboratory investigation was to observe the diffusion of water across a semi-permeable membrane. In this lab, dialysis tubing was used to represent the semi-permeable cell membrane. Three dialysis tubes were prepared with 5% sucrose solution and were soaked in solutions of different concentrations. The diffusion of water across a semi-permeable membrane is called osmosis. When...

    Concentration, Dialysis tubing, Diffusion 941  Words | 7  Pages

  • Biology Lab Report Ib Hl Osmosis

    Biology Lab Report 2 Investigating the phenomenon of Osmosis in plant tissues: Potato in different concentrations of NaCl Tutor: Maria Tsaousidou By Marina Gkritzioudi of NaCl Tutor: Maria Tsaousidou By Marina Gkritzioudi Investigating the phenomenon of Osmosis in plant tissues: Potato in different concentrations of NaCl Introduction: Osmosis is the movement of...

    Aqueous solution, Chemistry, Concentration 1917  Words | 6  Pages

  • Osmosis lab

    diffusion called osmosis, “which involves in selective transport of water molecules across a selectively permeable membrane” (Lab Manual 2nd edition). It was hypothesized that osmosis will occur when there is an uneven distribution of solute in a solvent. The more abundant the solute is in solvent, the higher the rate of osmosis through the diffusion gradient forming a hypertonic or hypotonic solution. Solvent with equal or no solute forms an isotonic solution. Throughout this lab, data was collected...

    Cell wall, Chemistry, Concentration 717  Words | 4  Pages

  • Osmosis Potato Lab Report Biology 4u

    Introduction The movement of water molecules across a semi-permeable membrane is the process of osmosis. If there is a solute and a solvent, each containing different concentration levels, then the water would move along its concentration gradient until each side of the membrane are equal. The water moves because the membrane is impermeable to the solute and the solute concentrations may differ on either side of the membrane. Water molecules may move in and out of the cell, but there is no net diffusion...

    Chemistry, Concentration, Molecular diffusion 2124  Words | 7  Pages

  • Osmosis Lab

    Osmosis Design Lab November 19, 2011 Biology Defining the Problem and Selecting the Variables Research Question: What will happen to mass of the cell when it is placed in different solutions while trying to reach equilibrium? Background Information Osmosis is the procedure where water or different types of liquids move through a semipermeable membrane. This type of passage is considered as simple diffusion where no energy is required. This means that the liquid will have...

    Chemistry, Concentration, Liquid 1553  Words | 5  Pages

  • Osmosis Lab

    xxx1 xxxxxx Ms. xxxx Biology 20 November 2013 Osmosis Lab Problem: What’s the order of the concentration for each solution and how does it affect the movement of water? Hypothesis: Experimenter thinks the order of the solutions according to their concentration is D,A,E,C,B, from smallest. And the water will pass through semipermeable tubing bag from low to high concentration to thin the concentration inside the bag. Osmosis is a diffusion of water particles and is one of the passive transport...

    Chemistry, Concentration, Saturation 911  Words | 5  Pages

  • Lab 5: Osmosis

    Lab 5: Osmosis Purpose: The purpose of this lab is to familiarize you with osmosis and, specifically, what happens to cells when they are exposed to solutions of differing tonicities. Hypothesis: If we add higher concentrations of sugar to the dialysis tubing, then the net movement of coffee into the dialysis tubing will increase. Materials scale or balance 24" dialysis tubing 4 transfer pipets sugar scissors rubber bands four coffee cups - they need to be roughly the same size ...

    Dialysis, Dialysis tubing, Mass 1044  Words | 4  Pages

  • Osmosis lab

     The Measurement of the Rate of Osmosis by using “Deshelled” Chicken Eggs (Effect of Solute Concentration upon Rate/Degree of Osmosis in Chicken Eggs) Introduction Every cell needs a mechanism that it uses in the maintenance of a constant internal environment. This is important in the control of the ever changing external environment to the cell. The transfer of materials to and from the cell thus needs a very stable mechanism to achieve this status. Cells are therefore bound a membrane that acts...

    Cell biology, Cell membrane, Chemistry 1653  Words | 5  Pages

  • Osmosis Lab

    rate of osmosis across a potato’s cell membrane submerged for 94 hours in the solutation. Background Information: Osmosis is the movement of solvent molecules across a partially permeable membrane. They move from a region of low concentration (hypotonic) to a region of high concentration (hypertonic). The rate of osmosis across a eukaryotic cell membrane can be affected by different factors; including temperature, concentration gradient, water potential and the surface area for osmosis to occur...

    Concentration, Diffusion, Osmosis 1455  Words | 5  Pages

  • Osmosis Lab

    Aim: Investigate the effect of sucrose concentration on osmosis in Solanum tuberosum by recording the change in mass. • Independent Variable: concentration of sucrose (0.0 M, 0.2 M, 0.4 M, 0.6 M, 0.8 M, 1.0 M) (± 0.05) • Dependent Variable: final mass of the cylinders of Solanum tuberosum (± 0.05) • Controlled Variable: temperature, initial length of potato cylinders, volume of the solutions, etc. Apparatus/Materials: • Solanum tuberosum (potatoes) • Sucrose solution (0.0 M, 0.2 M, 0.4 M...

    Cell wall, Concentration, Isotonic 730  Words | 4  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

  • Bio Lab Report

    Lab Report Microscopic Study: Investigating Osmosis in Red Blood Cells Lab Report Investigating Osmosis in Red Blood Cells Introduction: The flow of water across a permeable membrane is called osmosis, and during this process, water moves down its concentration gradient. A solution surrounding a cell is hypertonic if it contains more solute particles than the inside of the cell, and the water will move out of the cell into the surrounding hypertonic solution by osmosis. If the...

    Blood, Blood cell, Blood plasma 547  Words | 3  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 Report

    American Community School at Beirut Middle School Science Department The Effect of Concentration on the Rate of the Reaction between H2O2 and Yeast. Lab Report Written by: Kate Wickens Partner: Ekaterina Letunovskya Date Performed: 3/24/2014 Date Due: 3/26/2014 Authenticity Statement: I confirm that this work is my own and is authentic. Introduction: The purpose of this experiment is to find out what different factors affect how quickly or slowly a chemical reaction...

    Chemical reaction, Chemistry, Gas 1079  Words | 6  Pages

  • Osmosis

    diffusion(and also facilitated diffusion), osmosis and active transport. Diffusion and osmosis are passive movements and they don't require any energy. Active transport requires ATP energy. OSMOSIS is the passive movement of water molecules across a partially permeable (semipermeable) membrane, from a region of lower solute concentration to a region of higher solute concentration in order to equalize the solute concentrations on the two sides. Tonicity is a measure of the osmotic pressure of two...

    Cell, Cell membrane, Cell wall 1297  Words | 7  Pages

  • Lab Report

    Chem 105 Guide to the Formal Laboratory Report The purpose of a formal report is to communicate effectively to another person the goal, procedure, data analysis method, and results of your laboratory work. The report is divided into several well-defined sections. Each section must be present in a complete report. To earn an outcome point for the laboratory report, a student must submit a formal lab report that earns a score of at least 90/100. Each error (factual, grammatical, typographical...

    Chemistry, Erlenmeyer flask, Error 1317  Words | 5  Pages

  • Molecular Polarity PhET Lab

    Molecule Polarity PhET Lab A study of electronegativity, bond polarity, and molecular polarity Introduction: In this atomic-level simulation, you will investigate how atoms' electronegativity value affects the bonds they produce. When two atoms bond, a pair of electrons is shared between atoms. Electronegativity is a measure of a single atom's ability to hoard electrons shared in that bond. In this lab you will work diligently, at your own pace, to answer a number of questions. To begin, from...

    Atom, Chemical bond, Chemical bonding 665  Words | 4  Pages

  • Ap Bio Lab Report

    AP Bio Lab Report Osmosis and Diffusion Introduction When a substance is released into an area, the random movement of its molecules results in a multitude of collisions. These collisions, in turn, lead to a dispersion of the molecules. The overall movement of the molecules will be from an area of high concentration, where there will be more collisions, to areas of low concentration, where the number of collisions will be much less. This process of dispersion will continue until there is no...

    Chemistry, Concentration, Dialysis tubing 865  Words | 3  Pages

  • Lab Report Example

    Anjali Patel Riley Egan, Nick Morrison 10/2/13 Block 2 LAB REPORT OUTLINE FOR DIFFUSION/OSMOSIS LAB Introduction: Diffusion is the net movement of small or uncharged molecules or substances from areas of higher concentration to areas of lower concentration. There is simple diffusion, as explained, and facilitated diffusion. Facilitated diffusion, on the other hand, involves larger or charged molecules or substances that need a protein tunnel through the membrane to help the substance enter...

    Chemistry, Concentration, Diffusion 768  Words | 4  Pages

  • The Osmosis and Diffusion Report

    Northern Kentucky University BIO 150L: Introduction to Biology I Instructor: Dr. Bethany Bowling Osmosis and Diffusion Report Estimating the Osmolarity of Plant Cells--Potato YAO ZHANG 03/26/2012 Introduction: It is undeniable that all cells have the kinetic energy. It will led the cells move randomly around to others. For this molecular movement, there are two results that might happen. Diffusion is one of them. Diffusion is the movement of molecules that between the...

    Chemistry, Concentration, Osmosis 1313  Words | 4  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

  • LAB REPORT

    Institute Physics Course 2014 - Rocket Lab Report Title: RockSim and Electronic Altimeter Measurement Techniques Name: Scarlet Henriquez Email: scarletpatricia94@aol.com LAB SESSION ___8____Assignment _____7_____ Due Date: ___7/8/14______ Objective: Launch a smaller rocket to learn how to compare RockSim predictions (computer based) to an actual instrument measurement carried by the rocket (Electronic Altimeter). This Lab shows how better the electronic measurement...

    Aircraft, Altimeter, Calculation 401  Words | 8  Pages

  • lab reports

    Writing Laboratory Reports Lab reports for Biology may seem different than other classes you have taken. As you progress further in science, you will see variations in styles of lab reports, though they all contain the same basic principles. Lab report sections are as follows: Cover Page Introduction Objective Materials and Procedures Results/Data Conclusions Works Cited **Not every lab report will contain every section. I will give you specific instructions for each lab write-up** ...

    Scientific method 1210  Words | 5  Pages

  • Lab Report

    Laboratory Report The Plasma Membrane I. Introduction The Plasma membrane is the edge of life, the boundary that separates the cell from its surroundings. It controls the traffic of materials in and out of the cell. (Reece, 2011). It is incredibly thin that is very vital in maintaining the integrity of the cell. Not only does the plasma membrane bind the other organelles, it also forms a dynamic structure which gives them their remarkable activity and selectivity. (Hickman, 2008). Diffusion...

    Cell membrane, Chemistry, Diffusion 1439  Words | 5  Pages

  • Cell Membrane Lab

    Lab #1: Cell Membrane Prepared for Gary V. Lawrence Biology 0983 By Zane Jeffels Partners: Lily Juno, Huynh, and Lin Yan Sun Preformed: October 11th, 2010 Due: October 25th, 2010 King Edward Campus- Rm. 3275 Vancouver Community College Abstract The purpose of this lab was to determine if hemolysis would occur, and how long it would take to occur to red blood cells when blood suspension is introduced to solutions prepared at different temperatures...

    Blood, Blood cell, Cell biology 914  Words | 4  Pages

  • lab report

    CHM1032L pre/post lab instructions Preparation is a key to success in this lab. For this reason, you are required to thoroughly read through the experiment information presented in the lab manual, and complete a pre-lab for each experiment you do. The prelab must be completed prior to the day of the experiment. Each Friday I will ask to see your completed prelab before I allow you to enter the lab. If you have not finished the pre-lab, I will not allow you to enter the lab and you will receive...

    Experiment, Laboratory, Logic 1036  Words | 4  Pages

  • Lab Report

    Chemistry Lab Report Water Hydration Introduction: A hydrated crystal or hydrated occurs when water becomes tightly attracted to a metal salt base on it’s polarity. The water molecules maintain integrity as molecules, however they are considered to be part of the formula of the hydrate. When the hydrate metal salt crystal is heated, the attractions to the water are broken by the heat energy and the water escape from the crystal. After heating the salt crystal is called as anhydrous, which...

    Evaporation, Heat, Hydrate 1100  Words | 5  Pages

  • Lab Reports

    lab reports becca Medina Biology Lab 1107 Lab Notebook The Scientific Method Problem: Will a male or female have a higher heart rate after participating in the physical activity of running up three floors of a building? Both students are involved in sports that require physical activity. Hypothesis: We believe that the male would have a lower heart rate after running up the stairs determining that he is in better shape. Materials/Methods: The two students will both run up the same number...

    Carbon dioxide, Cell nucleus, Eukaryote 1091  Words | 4  Pages

  • Osmosis Lab Report

    Natasha Tenen Lab: Thursday (3-6 pm) OSMOSIS LAB REPORT INTRODUCTION Osmosis is a special type of diffusion where water molecules move down a concentration gradient across a cell membrane. The solute (dissolved substance) concentration affects the rate of osmosis causing it either to speed the process up or slow it down. Based on this, how does different concentrations of sucrose affect the rate of osmosis? If sucrose concentration increases in the selectivity-permeable baggies, then the...

    Chemistry, Concentration, FIA 666  Words | 2  Pages

  • Osmosis Lab Write Up

    What I already knew: Dehydrated apples have less Surface Area/Volume ratio Regular apples have water in them from their juice, meaning that in order for the rate of osmosis to balance out, there wouldn’t be as much osmosis occurring as in dehydrated apples because they have little to no water/juices. Why I choose to use apples and dehydrated apples for the experiment: When we were given the experiment, I had eaten an apple only a few minutes ago. So when we were asked to pick a fruit or vegetable...

    Apple, Apple crisp, Fruit 639  Words | 4  Pages

  • Lab Report

    Year 11 Lab Report Template Experiment – Modelling A. Title • A brief concise descriptive title B. Aim • What are you trying to find out? • What do you want to learn? C. Hypothesis • Write a possible solution to the problem. • If ………………………………………………………………………………………….then ………………………………………………………………………………………………………. • Make sure the above statement is testable. • The Independent variable is …………………………………………………….. ...

    Control, Experiment, Hypothesis 399  Words | 3  Pages

  • Biology Lab on Osmosis

    Michelle Kim 2012.1.20 Biology Iso-osmolar Concentration of Carrot Cells Lab INTRODUCTION For a more thorough understanding of this lab introduction, the concepts of, iso osmolar, membrane, equilibrium, and concentration gradient evaluated. Iso osmolar can be known as the point in which the substance of experimentation faces no change despite the amount of solute inside the solvent( because the solvent and solute concentration is equal. This is where the line on a graph would cross on the...

    Cell, Cell wall, Chemistry 1893  Words | 5  Pages

  • Potato osmosis lab

    grams of salt to the second cup. This is for the 0.4% salt water solution. Step 6: Leave cups to sit. Check on them next class and record observations. Sample Initial Mass (g) Day 1 Final Mass (g) Day 2 Quantative Data Qualitative Data Tonicity Before Hypo- Iso- Hyper- 40% Salt 4.01 g 3.47 g -0.54 g Firm Firm X 0.4% Salt 4.32 g 3.65 g -0.67 g Firm Firm X Tap Water 7.5 g 6.73 g -0.77 Firm Soft X Observations: Three potatoes...

    Dehydration, English-language films, Kilogram 292  Words | 3  Pages

  • Diffusion, Dialysis & Osmosis Lab

    Introduction In Diffusion, Dialysis & Osmosis lab, we discovered that we were going to observe and understand the conditions under which diffusion, dialysis, and osmosis occur. Then we constructed models of diffusion, dialysis, and osmosis. We predicted that the direction of change would be from the membrane to the beaker. We understood how these processes affected the selectivity of the cell membrane. The second part of the lab was dealing with dialysis. In this part we studied starch and sodium...

    Chlorine, Glucose, Iodine 722  Words | 4  Pages

  • Lab Report

    INTRODUCTION: In this laboratory exercise explore the differences of microorganism and continue our use of specialized media and use some biochemical testing.This report discloses the basic laboratory instruments will be used in each of our practices .It is of great importance to recognize and identify the different instruments and laboratory tools, because in this way will we be able to use them properly and also to call them by name and know why. Listen Read phonetically   Dictionary - View...

    Bacteria, Gram staining, Metabolism 527  Words | 4  Pages

  • Lab Report-

    Student's Name Date of Experiment- 11/27/12 Date Report Submitted 11/27/12 Title: Caloric Content of Food Purpose: to be able to measure the energy content of foods Procedure: We are going to take food items and burn them to heat water to be able to determine the amount of “energy” a food source can emit. Data Tables: |Data Table 1: Food Item - Observations ...

    Carbon dioxide, Energy, Heat 456  Words | 3  Pages

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