Cell wall Essays & Research Papers

Best Cell wall Essays

  • Cell wall - 1151 Words
    Cell wall is a fairly rigid, protective and supportive layer surrounding the cell external to plasma membrane of plants, bacteria, archaea, fungi and algae. It is absent in animals and most protists. It was first observed by Robert Hooke in 1665. It is not an entirely rigid structure as the cell wall expands due to the growth of the cell. It varies in thickness from o.1mm to I0mm.in most of the cells, cell wall is present from the very beginning to the last, but in slime molds...
    1,151 Words | 5 Pages
  • Osmosis: Cell Wall and Water
    Aim: The aim of this experiment is to investigate the movement of water into and out of plant cells by osmosis. The cells chosen for study will be taken from potato tubes as they provide a ready supply of homogeneous material. I did the investigation in two parts, the first part of my investigation was my preliminary investigation and then I did my official investigation. In both of my investigations there are several similarities, such as fair testing, variables, key variables, reliability...
    2,770 Words | 8 Pages
  • Cell Wall and Magnification Factor
    Cell Magnification Fig. 1.2.1 below shows an animal cell [pic] _________ 5(m Fig. 1.2.1 Diagram showing the general structure Of an animal cell as seen under the electron microscope 1. Calculate the magnification factor 2. Calculate the length of structure G 3. Calculate the diameter of the nucleolus 4. Calculate the diameter of the nucleus 5. Calculate the diameter...
    456 Words | 4 Pages
  • Cell Wall and Water - 1921 Words
    Jessica Schunzel Biology 107 September 27, 2010 Abstract: When a plant is placed in a hypertonic solution, the environment is more concentrated then that of the cell’s internal environment, the cell will lose water, shrinking and becoming flaccid a process called plasmolysis. When a plant is placed in a hypotonic solution, the cell’s internal environment is more concentrated then that of the surrounding solution, water will rush inward and the cell will swell and expand, keeping...
    1,921 Words | 6 Pages
  • All Cell wall Essays

  • Animal Cells Do Not Have a Cell Wall
    Animal cells do not have a cell wall. Instead of a cell wall, the plasma membrane (usually called cell membrane when discussing animal cells) is the outer boundary of animal cells. Animal tissues therefore require either external or internal support from some kind of skeleton. Frameworks of rigid cellulose fibrils thicken and strengthen the cell walls of higher plants. Plasmodesmata that connect the protoplasts of higher plant cells do not have a counterpart in the animal cell model. During...
    423 Words | 2 Pages
  • Conclusion: Cell Wall and Salt Concentration
    My conclusion is that the higher salt concentration in the solution the greater the decrease in mass of the potato will be, the graph I have drawn supports my conclusion. The 10% salt concentration shows that on average the potato loses 2.6% of its overall mass. 20% salt concentration shows a further decrease in mass this time it is an average of 13% overall mass decrease. 30% salt concentration shows an average decrease of 18.8% in overall mass. The 0% salt concentration actually shows a mass...
    370 Words | 1 Page
  • Osmosis: Cell Wall and Cover Slip
    Introduction: Humans sometimes don’t know why phenomenon or things happen. They just accept it without knowing the cause of it. And there is no meaning in it if we just accept things without reasons. That’s why this experiment is conducted so that we may know how things happen in the level of cells. Objectives: 1. To demonstrate the principle of Osmosis and to apply it with actual life situations. Materials and Methods: • Materials:  Compound microscope  Glass Slide  Cover...
    611 Words | 2 Pages
  • Cells - 1210 Words
    INTRODUCTION The present invention relates to a process for the preparation of a biological material or compound, particularly a section of tissue on an object carrier, for examination with a microscope as well as a corresponding arrangement of a biological material prepared in such a manner on carrier means, for example a glass object carrier. In particular, the present invention relates to such a process for the preparation of an examination of the biological material (in the following also...
    1,210 Words | 4 Pages
  • Cells - 1269 Words
    Drawings vary, check to make sure the relative sizes are correct. High Power should show only a couple of cells that take up most of the viewing field. The micoscope is designed to view the slide at different spots, so not all drawings will look like this one. Images were snipped from the virtual microscope's flash animation. Scanning (4) | Low (10) | High (40) | 3. Go to google and type "cheek cells" into the search box. Click on "images" to see all the images google has found on the web...
    1,269 Words | 4 Pages
  • Osmosis: Cell Wall and Salt Water Solution
    Objective: Observe response of Elodea densa cells to a salt solution. Background Information: Diffusion is when substances spread throughout a liquid or a gas (high to low). Osmosis is the diffusion of water through a selectively permeable membrane (a type of diffusion). In plant cells it is also referred to as plasmolysis. Plasmolysis affects the cells ability to work properly (homeostasis). Plant cells are homeostatic when their central vacuole is filled with water. Surrounding a plant...
    559 Words | 3 Pages
  • Osmosis: Cell Wall and Sodium Chloride Solution
    Observing osmosis, plasmoylsis and turgor in plant cells Investigation * Get a single layer of plant cells. If you are using red onion, cut a 1 cm square from a fleshy piece of onion and then peel off a single layer of the red cells. If you are using rhubarb, peel a piece from the epidermis. If you are using toadflax peel a piece of the lower epidermis of a leaf. * Place the strip on a slide and cover it with a drop or two of distilled water. Add a cover slip. * Look at the cells...
    682 Words | 3 Pages
  • Osmosis: Cell and Epidermal Cells
    36 osmosis in living plant cells Backround If a plant cell is in contact with a HYPERTONIC solution, that is a solution that has a highersolute concentration than the cell contents, water leaves the cell by osmosis via the cell membrane. Water is lost first from the cytoplasm and then the sap vacuole through the tonoplast. The PROTOPLAST – the living part of the cell (cytoplasm+nucleus) shrinks and eventually pulls away form the cell wall – this process is called PLASMOLYSIS, and the...
    346 Words | 2 Pages
  • Onion Cell - 493 Words
    Unit 1: fundamentals of science. Title An investigation of an onion cell using a light microscope. Aim: The aim of this investigation is to identify the cells within an onion skin using a light microscope. An onion cell is a plant cell which through the light microscope, it should outline the cell wall, cell membrane and the nucleus. Introduction: Plant cells have a cell wall and cell membrane which animal cells do not have. The cell wall provides support and is relatively rigid, which...
    493 Words | 2 Pages
  • Plasmolysis: Cell and Plant Cells Materials
    Study of plasmolysis Objective: To study the phenomenon of plasmolysis and deplasmolysis in plant cells Materials required: onion bulb,watchglass,petridish,forceps,brush,needles,microscope,coverslip,sucrose solution. (Onion is taken as it is easily available) Procedure: 1. Take an onion bulb. Peel off a thin peel from the fleshy leaves. 2. Keep the peel in water in a watch glass. 3. Transfer this peel on a clean glass slide and cover it with a glass cover slip. 4. Observe the cells...
    295 Words | 2 Pages
  • Cell Structure - 1208 Words
    Experiment 3 Objectives: After completing the exercise, I was able to: a) Prepare the specimens for staining. b) Observe and identify the unique and typical structures of the microscopic world. c) Identify and use different stains for different types of organelles. Introduction Cell is the simplest unit of life as we see it now. All organisms are made from cells. It is first explained by Robert Hooke in the year 1665 and it is now known to be of almost universal occurrence...
    1,208 Words | 4 Pages
  • Plant Cell - 1161 Words
    PLANT CELL Introduction Plant cell is the basic unit of structure and function in nearly all plants. The range of specialization and the character of association of plant cells are very wide. In the simplest plant forms a single cell constitutes a whole organism and carries out all the life functions. In just slightly more complex forms, cells are associated structurally, but each cell appears to carry out the fundamental life functions, although certain ones may be...
    1,161 Words | 5 Pages
  • Cell and Diagram - 2220 Words
    w w w e tr .X m eP e ap UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education .c rs om 0610/01 BIOLOGY Paper 1 Multiple Choice Additional Materials: Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended) October/November 2008 45 minutes *1478016376* READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name,...
    2,220 Words | 15 Pages
  • EARLY CELLS - 341 Words
    Egg size: Started at 6 (24 hours), 7.5 (48 hours), 8,4 (72 hours) Hypothesis: My hypothesis was that it would grow a little bit from it original size and smell really bad and it would be rubber. Results: They match, it smelled terrible and it grow a little bit. Experiment notes- First I put the egg on the vinager, the the egg started to float on the top A few hours later it started to smell bad, and like the shell started to come away And then it just all the shell break off and like the egg...
    341 Words | 1 Page
  • Manufacturing Cell - 748 Words
    Why might it be difficult to develop a manufacturing cell? Support your answer with examples. Cellular manufacturing is a manufacturing process that produces families of parts within a single line or cell of machines operated by machinists who work only within the line or cell. A cell is a small scale, clearly-stated production unit within a larger factory. This unit has full responsibility for producing a family of like parts or a product. All necessary machines and manpower are enclosed...
    748 Words | 3 Pages
  • Plant Cells - 1241 Words
    Plant cells are eukaryotic cells that differ in several key aspects from the cells of other eukaryotic organisms. Their distinctive features include: A large central vacuole, a water-filled volume enclosed by a membrane known as the tonoplast maintains the cell's turgor, controls movement of molecules between the cytosol and sap, stores useful material and digests waste proteins and organelles. A cell wall composed of cellulose and hemicellulose, pectin and in many cases lignin, is secreted...
    1,241 Words | 4 Pages
  • animal cells - 328 Words
    Animal cells are distinct from plant cells. Animal cells lack a cell wall (cellulose) which allows the animal to move without breaking it's cells apart. When you break a piece of celery, the noise It has a nucleus, a cytoplasm and a cell membrane. http://wiki.answers.com/Q/What_are_some_animal_cel... What are facts about on animal cells? theyt have no cell wall. they have a nucleus and nucleolus. http://wiki.answers.com/Q/What_are_facts_about_on_... What are some facts on an animal...
    328 Words | 2 Pages
  • Cell and Mark - 2277 Words
    Centre Number Surname Other Names Candidate Signature Candidate Number For Examiner’s Use Examiner’s Initials Question Mark General Certificate of Secondary Education Foundation Tier January 2012 1 2 3 4 5 6 7 8 Additional Science Unit Biology B2 BLY2F Biology Unit Biology B2 Written Paper Tuesday 24 January 2012 For this paper you must have:  a ruler. You may use a calculator. F 9.00 am to 9.45 am 9 TOTAL Time allowed  45 minutes Instructions  Use black ink or black ball-point...
    2,277 Words | 15 Pages
  • Specialized Cell - 862 Words
    SPECIALIZED CELL ANIMAL Sperm cells PLANT Xylem cells are specialised to find a female cell (egg cells) and join with it. They have tails, that makes them move in water to find and fertilize the female cell. They can move because they have many mitochondria located between the tail and the head, which gives them energy. In the head, there is a vacuole filled with acrosome, which is a specialized Lysosome that releases enzymes in order for the Sperm Cell to break into the Egg Cell,...
    862 Words | 3 Pages
  • Cell and Skill - 9719 Words
    Biology: Concepts and Connections, 6e (Campbell) Test Bank (1) Part (1) Chapter 1 Introduction: The Scientific Study of Life 1) Which of the following statements about the leopard is false? A) Leopards are the largest cat in the genus Panthera. B) Leopards, like lions, can roar. C) Leopards prefer to eat their kill in trees. D) Leopards are well-adapted for nocturnal hunting. E) Leopards are normally solitary animals. Answer: A Topic: Opening Essay Skill:...
    9,719 Words | 56 Pages
  • Cell Division - 606 Words
    4.I believe that our observations are repressentative of cell division taking place in the oinon root tip. Firstly, this is because our numbers of the number of cells in each phase of mitosis are similar to the rest of the groups, so we can assume our results are most likely correct. We can also assume our calculations are right because we know that Interphase is the most active phase in the process of cell divison, which would agree with our calculations since we assume that approxiamtly 93%...
    606 Words | 2 Pages
  • cell organelle - 445 Words
    Dear Cell Corporation, I am the cell membrane. I am made up of a bi-lipid membranous layer composed of protein and carbohydrates. I don’t know how you can fire me considering all of the things that I am doing and the things that I have done for you. I work for you in both cells; the animal cell and the plant cell. I have been providing and am still providing support and protection. I control the movement of materials in and out of both cells. I am a barrier between the cells and their...
    445 Words | 1 Page
  • Compare the Size of Cheek Cell and Onion Cell
    Compare the size of cheek cell and onion cell DCP: Introduction: In this experiment, Onion cells (Allium cepa) Cheek cells (Homo sapiens) were measured and compared. The aim of this experiment is to find out how both cells differ by comparing their size. Onion cells (Allium cepa) is plant cell and Cheek cells (Homo sapiens) is an animal cell. Hypothesis: The size of an animal cell (Homo sapiens) should be smaller than a plant cell (Allium cepa). Because a plant cell has cell wall...
    793 Words | 4 Pages
  • The Science and Ethics of Stem Cell: Early Cells
    2.3 Early Cells NOTES – 16pts How do we know if something is living? It has ___________ CELL THEORY All living things are made up of cells. The cell is basic unit of structure and function in all living things. New cells can only be produced from existing cells. Remember that this is a THEORY…. YOU MUST READ PAGE 2 OF THE LESSON AND TAKE NOTES ON THE SCIENTISTS WHO CONTRIBUTED TO THE CELL THEORY! YOU WILL BE TESTED ON THEM! PROKARYOTIC V. EUKARYOTIC CELLS EukaryoteHave a...
    1,673 Words | 7 Pages
  • Movement in and out of cells - 850 Words
    Movement in and out of cells Diffusion: (mixing molecules) Molecules and ions in a liquid or a gas move continuously. The movement is quite random, and the particles change direction as they bump into one another. The particles collide more often when they are close together (when they are concentrated) and so they tend to diffuse, or spread out, until they are spaced evenly throughout the gas or liquid. The random movement of particles is due to their own kinetic energy. When the...
    850 Words | 4 Pages
  • Effects of Temperature on Cell Membranes
    Investigating the effect of temperature on plant cell membranes The purpose of this activity is: • to practise experimental and investigative skills • to investigate the effect of temperature on cell membrane structures Procedure SAFETY: Always carry scalpels clasped to a tile and with the tip pointing away from you. Beetroot cells contain pigments called betalains that give the tissue its dark purple-red colour. The pigment is contained in the cell vacuole. Investigation...
    804 Words | 3 Pages
  • Osmosis in Onion Cell - 668 Words
    The aim of the sixteenth of November experiments was to observe how three different solutions with various sucrose concentration influenced osmosis in relation to three onion cells and the impact on the cells structure. A small square of a red onion skin (membrane) was observed under a microscope at high power (X40) magnification. The observation showed a large number of onion cells. The structure of one onion cell had a general rectangular shape with a developed cell wall, which gives the...
    668 Words | 2 Pages
  • Cell Transportation Lab - 860 Words
    Cell Transportation Lab Eggs are a great example of a cell. Underneath the hard shell is a thin membrane that is just like the cell membranes in your cells. There are microscopic pores in the membrane that allow substances to move in and out of the cell. Way Cool! Recall that the function of the cell membrane is to control the internal balance of the cell. It helps to maintain homeostasis. In this lab you will use vinegar, an acid, to dissolve the shell off of the egg to expose the...
    860 Words | 4 Pages
  • Investigating Cells Revision - 1455 Words
    STANDARD GRADE BIOLOGY CREDIT LEVEL REVISION QUESTIONS INVESTIGATING CELLS 1. In an investigation, three 25 g samples of sultanas were put into separate beakers of distilled water, as shown below: After 24 hours, the sultanas were removed from the water, blotted on filter paper and reweighed. The results are shown in the table: |Sample |Mass after 24 hrs (g) |Percentage change in mass | |1...
    1,455 Words | 11 Pages
  • Animal and Plant Cells - 1302 Words
    Thursday, October 4th, 2012 Tuesday, October 9th, 2012 Comparing Plant and Animal Cells Abstract The purpose of our lab was to have a better understanding of what are the differences between animal cells and plant cells. Although the cell is the basic unit in both living beings they are not completely alike. For that I have examined and compared human cheek cells to Elodea leaf cells. First, I’ve scraped the inside of my cheek with the end of a swab stick to collect the cells then I’ve...
    1,302 Words | 4 Pages
  • The Birth of Complex Cells - 460 Words
    BI211: Birth of Complex Cells Section: Tue/Thr 200­450 Joy Yang De Duve, C., 1996. ​ Birth of Complex Cells​ . Discovery Magazine 274(4): 50­57​ . 1.Having more understanding of how the process of scientific inquiry works, the more I felt that science is a result of efforts made by scientists through the accumulation of time. For example, in order to provide an evidence that the start of a complex cells begins with having an ancestral cells hosting other living cells, ...
    460 Words | 1 Page
  • Plant Cell Structure and Functions
    Plant Cell Plant cells are eukaryotic cells or cells with membrane bound nucleus. Generally, plant cells are larger than animal cells and are mostly similar in size and are rectangular or cube shaped. Plant cells are similar to animal cells in being eukaryotic and they have similar cell organelles. What is a Plant Cell? Back to Top Plant cells are eukaryotic cells i.e., the DNA in a plant cell is enclosed within the nucleus. The most important distinctive structure of plant cell is the...
    1,675 Words | 7 Pages
  • Osmosis In Plant Cells - 1749 Words
    Osmosis is the diffusion of water molecules from an area of high concentration of sucrose solution to an area of lower concentration of sucrose solution, through a selectively permeable membrane. The water molecules move down a concentration gradient in osmosis. Two diagrams of osmosis are shown in figures 1 and 2. Figure 1 shows the diffusion of water molecules through a selectively permeable membrane from an area of highly concentrated sucrose solution to an area of lower concentrated sucrose...
    1,749 Words | 9 Pages
  • Red Onion Cell Lab
    INTRODUCTION The passage of water molecules through a selectively permeable membrane is a special case of diffusion known as osmosis. Osmosis results in the movement of water from an area of lower concentration of dissolved material to an area of higher concentration of dissolved material. For a demonstration of this principle, a purple onion cell is going to be bathed in...
    573 Words | 2 Pages
  • Cell Size Control - 7458 Words
    Cell Size Control David A Guertin, Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, USA David M Sabatini, Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, USA Growth in biological systems is defined as the accumulation of mass, which leads to an increase in size. In this article, we discuss how cells, organs, and organisms normally control growth, and how deregulated growth can lead to a variety of pathological conditions. Introductory article...
    7,458 Words | 23 Pages
  • Cell and Light Microscope - 1048 Words
    Aim In this assignment I am going to carry out a practical examination on a plant (onion) and an animal (cheek) cell under a light microscope. The stain methods I am going to use are iodine for my onion cell and methylene blue for my cheek cell. Introduction All animals and plants are made up of cells. Animal and plant cells are made from millions of tiny cells, so small that we are unable to see them with our naked eye. Animals and plants have many features in common within a cell such...
    1,048 Words | 5 Pages
  • The Effect of Osmosis on Potato Cells
    Page 1: Homepage Page 2: Contents Page 3: Introduction Pages 4 – 7: Preliminary Experiment Pages 8 - 14: Main Experiment Introduction In this experiment I am going to investigate the effect of varying concentration of a differing glucose solution on the amount of osmotic activity, between the solution and a potato tuber of a given size. The purpose of this experiment is to demonstrate how living cells rely on osmosis,...
    3,526 Words | 12 Pages
  • Tonicity and the Plant Cell - 1175 Words
    Lab 7, Experiment 2: Tonicity and the Plant Cell 1. What is measured when looking at the net change in displacement of the potato sample? The net change of displacement shows us how much the potato sample weighs. The heavier the sample, the more water it will displace. 2. Different types of potatoes have varying natural sugar concentrations. Explain how this may influence the experiment. In sample A, potatoes with higher sugar concentration will have more water diffuse into them, because...
    1,175 Words | 5 Pages
  • Cell Structure and Function - 606 Words
    Cell Structure and FunctionAbstractThis report is about cell structure and function. The cell is the basic unit of life. All living things are madeof cells. By doing this lab, I hoped to learn how a cell looked and how it functioned. I also wanted toknow the differences between prokaryotic cells and eukaryotic cells.IntroductionThe concept of this lab is producing a replica of an animal cell, and a plant cell. Producing the models of the cells helps to provide a better understanding of each cell...
    606 Words | 2 Pages
  • Cell Structures and the Gram Stain
    Lab 4: Cell Structures and the Gram Stain Purpose: The purpose of this lab is to familiarize the student with the use of a compound microscope and the Gram Stain test. Students will review a brief video and slides to introduce the compound microscope. Students will also view a video about the Gram Stain procedure and then answer questions related to it. Hypothesis If I look at the slides I will see where the cell wall is and what lies inside it and in the Gram Stain if I watch the video I...
    512 Words | 2 Pages
  • Surface Area and Cell SIze
    Lab 1- Surface Area and Cell Size: Introduction Background Information- Iodine is an indicator for starch. When iodine is merged with starch, it turns a dark purple/black color. Cells require nutrients in order to survive. Cells must eliminate waste in order to survive. Description of the Experiment- This experiment was done to provide evidence for why cells are so small. Basically, we pretended that each potato cube used was a single cell and the iodine is the nutrients (food) for the...
    1,504 Words | 8 Pages
  • Cell Transport Mechanisms Essay
    Cell Transport Mechanisms Essay There are two methods of moving molecules across the cell membrane, passive transport and active transport. Passive transport doesn’t use energy, while active transport does use energy. Passive transport allows molecules to move on their own according to natural laws of physics. The three types of passive transport mechanisms include diffusion, osmosis, and facilitated diffusion. Diffusion is the movement of materials from an area of most concentrated to...
    407 Words | 2 Pages
  • Drawings of Animal and Plant Cells
    BIO 131 Lab #2 Drawings of Animal and Plant Cells Instructions: 1. Set up light microscope for use. Handle with care. 2. Obtain a slide of animal cells and observe first under low-power (4X), then under medium power (10X), then finally switch to high-power (40X). 3. Make careful observations of the structure of the cells. 4. Draw what you see under high power on a sheet of paper. Place your drawing in a circle measuring 10-15 cm. Use only pencil, draw neat lines, do not shade. The...
    250 Words | 2 Pages
  • Cell Membrane Lab Report
     BioLab3 Cell Membranes Lab Report Student Name: I. Diffusion Define the following terms. Solvent Solute Solution. Diffusion Concentration gradient Dynamic equilibrium EXERCISE 1 – Factors influencing rate of diffusion Predict how molecule size and temperature will affect the outcome of this experiment. Record the data from the information in the lab. Potassium Permanganate R.T. Methylene Blue R.T. Time (min)...
    980 Words | 9 Pages
  • Animal vs Plant Cells
    Animal and Plant cells consist of most of the same cell types, but the whole shape of the cell is quite different. An animal cell is a round, uneven shape, whereas the Plant cell has an affixed shape. They have a more of a rectangular shape. Chloroplast, Vacuole and the Cell wall are only found in Plant cells. The Chloroplast is the organelle for the whole system of Photosynthesis. Chloroplasts are found in mesophyll cells (which are found in the leaves) of green plants. They convert light...
    373 Words | 1 Page
  • osmosis in onion cell - 743 Words
    Date: 28/11/13 EVALUATION OF THE EFFECT OF SODIUM CHLORIDE ON ONION EPIDERMAL CELLS INRODUCTION A living plant cell will shrinks or swells depending on the solute concentration of the cell in relation to the solute concentration of the fluid surrounding the cell (1). It follows that water will move from a region of high water concentration to a region of low water concentration therefore, if a cell is placed in a hypertonic solution water will move from the cell into the solution until...
    743 Words | 3 Pages
  • beet cells & stress - 1248 Words
    Anatomy Physiology 1 Report 1 April 6, 2014 Abstract Uncharged molecules can diffuse across cell membranes while some substances must be transported across the membrane by proteins. The membrane is in control of what enters and leaves the cell. However, certain conditions may damage the cell membrane’s structure. Beet cells, which are plant cells, have a water-soluble pigment called betacyanin, which is stored in its...
    1,248 Words | 17 Pages
  • Bacteria Cell Sturcture - 1076 Words
    1. Microbiology ⁃ M microscope ⁃ I independent unit ⁃ C comparatively less complex ⁃ R rapid rate of reproduction ⁃ O omnipresent ⁃ humans are living repositories of bacteria/microbes ⁃ borne sterile ⁃ microbe on all surface area of the body ⁃ sterile areas: eyes, brain, spinal cord, bones, kidney, internal organs ⁃ mutualistic relationship: we provide site and nutrient and microbes provide vitamin, aid in food digestion ⁃ division of microbial world ⁃ living component:...
    1,076 Words | 7 Pages
  • Osmosis of Potato Cells - 322 Words
    Osmosis of a Potato cell. Hypothesis is that the potato in saltwater is going to show that it will break down the cells of the potato. Osmosis is the diffusion of a solvent through a semi-permeable membrane, from a solution of low solute concentration to a solution with high solute concentration, up a solute concentration gradient. Net movement of solvent is from the less-concentrated to the more-concentreated., which tends to redure the difference in concentrations. This effect can be...
    322 Words | 1 Page
  • Comparing Plants and Animal Cells Lab
    Comparing Plant and Animal Cells Hypothesis: I predict I will see the following organelles when observing a plant and animal cell under a microscope: the cell membrane, cell wall, nucleus, and the endoplasmic reticulum. Frog Blood: Analysis: 1. The shape of the frog blood cell was in a circle, or oval. The edges were a little irregular, but it could still be identified as, basically, a circular shape. 2. The cells were produced by an animal, a frog. 3. The cell wall was not...
    658 Words | 2 Pages
  • The Effect of Temperature on Beetroot Cell Membranes
    The effect of temperature on the cell membranes of beetroot cells and amount of pigment released. Apparatus • Corer size 4 • White tile • A Beetroot • Automatic Water Bath • Segregated knife • A thermometer • Stopwatch Method: • First take the white tile and the corer. Then collect a cylinder of beetroot by pushing the corer into the beetroot and withdrawing it. The cylinder remains inside the corer- so push it out with the end of a pencil. • Collect 3...
    1,207 Words | 5 Pages
  • Life Processes: Plant and Animal Cells
    Biology 2-Life processes Plant and animal cells plant cell Has all the bits that the animal cell has plus: Permanent Vacuole- contains cell sap, weak solution of sugar and salts. Nucleus-contains genetic material and controls activities of cells Cytoplasm-gel like substance where all the chemical reactions take place Cell membrane- holds cell together and controls what goes IN and OUT Mitochondria- reactions for respiration takes place Ribosomes-proteins are made here Lots of...
    1,210 Words | 4 Pages
  • The Effect Of Temperature On a Cell Membrane's Permeability
    Aim: This experiment aims to determine what effect an increase in the surrounding temperature has on the plasma membrane of a typical plant cell structure. Hypothesis: An increase in temperature will damage and denature the plasma membrane and cause the cytoplasm and other substances contained within the membrane to leak out. Introduction: The purpose of a cell membrane is to control the transport of substances moving into and out of a cell. The membrane is an extremely thin layer (8 to 10...
    1,155 Words | 4 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....
    2,157 Words | 6 Pages
  • Cell Membrane and Membrane Lab Diffusion
    Cell Membrane Transport Cell Membrane Transport Hands-On Labs, Inc. Version 42-0034-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a su Premium 609 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...
    447 Words | 2 Pages
  • Ia - Onion & Ox Eye Cell
    Joanne Chan 12C Joanne Chan 12C Size of Allium cepa cells and Ovibos moschatus Oculi cells: Data collection and processing Raw data Table 1: Longest length recorded of Allium cepa cells and Ovibos moschatus Oculi cells Length of Allium cepa cells/ m - ±5.0 | Diameter of Ovibos moschatus Oculi cells/ m - ±5.0 | 330.0 | 25.0 | 360.0 | 30.0 | 320.0 | 30.0 | 280.0 | 40.0 | 300.0 | 40.0 | 350.0 | 30.0 | 300.0 | 30.0 | 290.0 | 30.0 | 420.0 | 20.0 | 280.0 | 40.0 |...
    1,275 Words | 5 Pages
  • An Investigation Into the Effects of Osmosis Potato Cells
    AN INVESTIGATION INTO THE EFFECTS OF OSMOSIS POTATO CELLS SKILL AREA P: PLANNING Introduction The aim of this investigation is to see the effect of varying concentrations of glucose solution on the amount of osmotic activity between the solution and a potato chip. An investigation into Plasmolysis in onion cells was undertaken prior to this experiment, in order to gain some knowledge of osmosis to enable a hypothesis to be formed. Preliminary Work and Scientific...
    1,523 Words | 5 Pages
  • Determining the Water Potential of Potato Cells
    EXERCISE 1C: Determining the Water Potential of Potato Cells Introduction: Water potential was defined above as an expression of the tendency of water to diffuse from one region to another. Water potential is a numerical value that must be determined for a given temperature and pressure. In this exercise you will determine the water potential of potato cells at room temperature and ambient pressure by placing cores of potato tissue in sucrose solutions of different concentrations and...
    2,016 Words | 7 Pages
  • Effect of Different Concentrations of Salt on Potato Cell Mass
     Aim To investigate the effects of increasing salinity on potato cell mass. Background Information This experiment is based upon osmosis. Osmosis can be defined as the net movement of water molecules from a region with high concentration to a region with low concentration. This movement must take place across a partially permeable membrane such as a cell wall, which lets smaller molecules such as water through but does not allow bigger molecules to...
    1,477 Words | 7 Pages
  • Effect of Solute Concentration on Osmosis in Potato Cells Report
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