"Observing The Effects Of Osmosis On Red Onion Skin Cells" Essays and Research Papers

Observing The Effects Of Osmosis On Red Onion Skin Cells

Osmosis in Red Onion Cells By: Youssef Gharib Brief Description of Osmosis in Red Onion cells: Osmosis is the diffusion of water from an area of low concentration to an area of high concentration across a semi-permeable membrane. The purpose of this lab is to compare the three different types of solutions affect on the relative size of the vacuole to the cell, the outer membrane of onion red cells (tunics) are used to figure out the different types. In the red onion you can see effects promptly...

Cell, Onion, Organelle 1397  Words | 5  Pages

Open Document

Osmosis: Sodium Chloride and Onion Cells

Osmosis/Plasmolysis Lab Name: Problem: How do solutions of various salt concentrations influence osmosis in relation to an onion cell? Materials: (per student group): red onion epidermis forceps, dropper distilled water NaCl solution paper towels microscope slide cover slip Procedure 1. Make a wet mount of the red onion epidermis. 2. Examine under low power. When you have a clear view of several cells, switch to high power. Make a labeled drawing...

Cell membrane, Cell nucleus, Onion 442  Words | 3  Pages

Open Document

Observing Plasmolysis in Onion Cells (Allium cepa)

OBSERVING PLASMOLYSIS IN ONION CELLS (_ALLIUM CEPA_) I. INTRODUCTION Plasmolysis is the process in plant cells in which the cytoplasm is separated from the cell wall as a result of water loss through osmosis. Osmosis is a type of passive transport involving movement of water molecules across a partially permeable membrane. 1. RESEARCH QUESTION How does 15% NaCl solution affect the appearance of onion cells? 2. HYPOTHESIS If onion cells are submerged in solutions of NaCl of different concentrations...

Bacteria, Cell, Cell membrane 743  Words | 6  Pages

Open Document

Osmosis and Cell

Name: ______________________________________ Date: ________________________ Student Exploration: Osmosis Vocabulary: cell membrane, concentration, diffusion, dynamic equilibrium, osmosis, semipermeable membrane, solute, solvent Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. Suppose you were trapped on a desert island with no sources of fresh water. Should you drink water from the ocean? Explain why or why not. _________________________________________________________________________ ...

Cell membrane, Chemical equilibrium, Chemistry 962  Words | 7  Pages

Open Document

osmosis in onion cell

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 the cell shrinks(1). Further...

Cell, Cell biology, Cell membrane 743  Words | 3  Pages

Open Document

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 Knowledge ...

Cell, Cell wall, Osmosis 1523  Words | 5  Pages

Open Document

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

Open Document

2015 OsmosisLabs Onions Potatoes

A STUDY OF OSMOSIS Han Cheng Water passes through aquaporins in cell membranes from an area of high water concentration (low solute concentration) to an area of low water concentration (high solute concentration). This process is called osmosis. It requires no cellular energy to be used, and occurs due to the random, continuous motion of all molecules. If a cell is placed in an environment in which the concentration of water is less than in the cell (hypertonic), water will flow from the cytoplasm...

Bacteria, Cell, Cell membrane 1728  Words | 8  Pages

Open Document

Osmosis in Onion Cell

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 rectangular shape to the cell and a cell membrane just beneath it. The observation under the microscope of a cell of an onion skin soaked...

Cell, Cell membrane, Cell wall 668  Words | 2  Pages

Open Document

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 through...

Cell, Cell membrane, Cell wall 682  Words | 3  Pages

Open Document

The Effect of Salt Concentration on Osmosis in Potato

Part A: Title: Diffusion Diffusion is the spontaneous movement of particles from where they are more concentrated to where they are less concentrated. For this experiment, a 14 cm glass was filled with cold tap water. A drop of red food coloring was dropped in the cup. A stopwatch was used to measure the time it took for the food coloring to get to the bottom of the cup. The average diffusion rate was .78 cm a second. If a different color was used, I do not think it would have made a difference...

Chemistry, Concentration, Diffusion 1173  Words | 4  Pages

Open Document

Red Onion Cell Lab

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 different concentrations of salt (NaCl) water. Problem: How do solutions of various salt concentrations influence osmosis in relation to an onion cell? ...

Bacteria, Cell, Cell membrane 573  Words | 2  Pages

Open Document

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

Open Document


Investigation: A factor that affects the movement of water in and out of cells. Osmosis: movement of water from a region of high water potential to a region of low water potential through a partially permeable membrane. High water potential = lots of free water molecules, low solute concentration Low water potential = very few free water molecules, high solute concentration Factors That Affect the Movement of Water in and out of Cells * Solute concentration * If one solution has low solute...

Chemistry, Concentration, Osmosis 460  Words | 3  Pages

Open Document

Skin Cells

For alternate meanings see skin (disambiguation) Diagram of the layers of human skinIn zootomy and dermatology, skin is an organ of the integumentary system composed of a layer of tissues that protect underlying muscles and organs. As the interface with the surroundings, it plays the most important role in protecting against pathogens. Its other main functions are insulation and temperature regulation, sensation and vitamin D and B synthesis. Skin has pigmentation, provided by melanocytes...

Dermis, Epidermis, Epithelium 1540  Words | 6  Pages

Open Document

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

Open Document

Effect of Solute Concentration on Osmosis in Potato Cells Report

INTRODUCTION Osmosis is the movement of water molecules from high concentration to low concentration through semipermeable membranes, caused by the difference in concentrations on the two sides of a membrane (Rbowen, L.). It occurs in both animals and plants cells. In human bodies, the process of osmosis is primarily found in the kidneys, in the glomerulus. In plants, osmosis is carried out everywhere within the cells of the plant (World Book, 1997). This can be shown by an experiment with potato...

Carbohydrate, Cell, Cell wall 1701  Words | 5  Pages

Open Document

experiment onion cell-biology

B04 onion skin lab SNC 2D Name:______________________________ Lab:  Investigation of the Structure of Onions Cells Purpose: To investigate the structure of onion cells and become familiar with some of the basic parts of  a cell.  This lab will also introduce you to the technique of preparing a wet mount slide. Materials: microscope pencil  cover slips lens paper paper towels blank white paper ruler known field of views beaker tweezers glass slides  eraser medicine dropper ...

Laboratory equipment 1055  Words | 4  Pages

Open Document

Cheek and Onion Cell experiment.

Cheek and Onion Cell Experiment The aim of this experiment will be to show that different cells have different structures and textures. Hypothesis I believe that viewing these different cell types under the microscope will show more detail and variations between the cells. Method Apparatus All apparatus was collected and setup as shown in the table below. CHEEK CELL ONION CELL Microscope Microscope Slide Slide Methylene Blue Iodine Spatula Microscopic Cover Slip Microscopic Cover...

Cell, Cell type, Cell wall 260  Words | 3  Pages

Open Document

The Process of Osmosis and Its Importance to Living Organisms

process of osmosis and its importance to living organisms Osmosis is the process by which there is a net movement of water through a semi permeable membrane from an area of high water potential to an area of low water potential. Within a cell, osmosis has the following effect. If the water potential of the cell is lower than that around the cell water will move across a concentration gradient into the cell. If this is the case, the increase in water in the cell, may cause the cell to swell, which...

Cell, Cell biology, Cell membrane 1432  Words | 4  Pages

Open Document

Observing Osmosis in Potato Cells

Observing Osmosis in Potato Cells Planning Purpose: To observe the effect of osmosis on plant cells. Hypothesis: The higher the salt content of the water, the lower the mass of the potato. Variables: Independent: the salt percentage of the solution Dependent: the weight of the potato in grams Controlled: the amount of water the length of time between measurements the method of measuring the type of plant cells tested Equipment: (as seen on 2A Human Biology task sheet) ...

Chemistry, Concentration, Hypothesis 474  Words | 2  Pages

Open Document

Compare the Size of Cheek Cell and Onion Cell

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 which is to maintain...

Cell, Cell wall, Eukaryote 793  Words | 4  Pages

Open Document

Osmosis Lab

table has been inserted below – fill this one in (the website tends to delete data): |Molecules Name |Red Blood Cell: |Red Blood Cell: | | |Net Water Movement In / Out |Appearance of Cell | |Hypotonic Solution | ...

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

Open Document

Osmosis: Cell Wall and Salt Water Solution

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 cell are two layers called the cell wall and...

Cell, Cell biology, Cell membrane 559  Words | 3  Pages

Open Document

Skin Lightening

Vitamin C lightens skin |In healthy adults, Vitamin C raises glutathione levels in the red blood cells and lymphocytes | |Glutathione helps determine the balance of light and dark pigments (pheomelanin and eumelanin) in our skin. L-cysteine and | |the TYRP1 enzyme also play a part in this balance | |Taking high doses of Vitamin C (1,000 – 3,000 mgs) can help to lighten skin over time ...

Amino acid, Antioxidant, Blood 1729  Words | 6  Pages

Open Document

Osmosis and Red Blood Cells

Word count: ____ 2013 The effect different concentrations of sodium chloride has on red blood cells Georgia Edgar Teacher: Mrs McPherson John Paul College Edgar Teacher: Mrs McPherson John Paul College Table of Contents Abstract 2 Introduction 3 Aim 3 Background 3 Hypothesis 4 Materials 5 Method 5 Results 6 Analysis of Results & Discussion 9 Conclusion...

Blood, Bone marrow, Cell 2836  Words | 10  Pages

Open Document

How does the relationship between salt concentration effect osmosis in the aquatic plant Elodea?

the relationship between salt concentration effect osmosis in the aquatic plant Elodea? Quantitative data From observing the cells under a microscope, we see that they are continuously moving and therefore are alive. We have observed that when the cells are in the 10% sodium chloride, the chloroplasts are positioned to the sides of the cell wall and the cytoplasm is more expanded. Cells in the distilled water are slightly smaller than the cells in the sodium chloride solution and the chloroplasts...

Cell, Cell membrane, Cell wall 1289  Words | 4  Pages

Open Document

Diffusion and Osmosis

Introduction Diffusion and osmosis incorporate isotonic solutions, hypertonic solutions, and hypotonic solution. Diffusion is the process of molecules to move from an area of high concentration to an area of lower concentration (Marieb, 2012). In osmosis the water moves across a selectively permeable. Although molecules in diffusion move down a concentration gradient, molecules during osmosis both proceed down a concentration gradient and also across it. They are both types of passive transport...

Cell biology, Cell membrane, Chemistry 1001  Words | 6  Pages

Open Document

Red Blood Cell and E.g. Sickle-cell Anemia

characterized by a deficiency in red blood cells or in the concentration of hemoglobin (iron-containing portions of red blood cells). These deficiencies are caused by either decreased production or increased destruction of red blood cells. Anemia is most common among women in their reproductive years (5.8 percent), infants (5.7 percent), and the elderly (12 percent). Because one of the major functions of red blood cells is to transport oxygen, a decrease in red blood cells decreases the amount of...

Anemia, Blood, Bone marrow 1707  Words | 5  Pages

Open Document

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

Open Document

Effect of Sucrose Solution on Osmosis

Effect of Sucrose Solution on Osmosis Aim: The aim of the experiment is to show how varying the concentration of sucrose solution affects osmosis by changing different molar solutions of sucrose and water and how it affects the potato. Introduction: In this investigation I will be exploring the effect of varying concentration of sucrose sugar solution on the amount of activity between the solution and the potatoes. Osmosis is the movement of water molecules across a partially...

Chemistry, Concentration, Diffusion 1024  Words | 6  Pages

Open Document

Practical 7 Osmosis

Practical 7 Osmosis Name: Diana Baktybayeva Tutorial Group: D Lab Partner: Nurlan Mukazhanov Day: Monday afternoon Date: 17.11.14 Title: Osmosis Introduction. Osmosis is a particular type of passive transport involving the movement of water molecules from the region of low solute concentration to the region of high solute concentration through semi permeable membrane, which allows movement of solvent molecules, but not solute. The main principle of osmosis is to equalize...

Cell, Cell biology, Cell membrane 1190  Words | 5  Pages

Open Document

Effects on temperature on beetroot cells

Biology Lab Report - Movement in and out of cells (4A) Shiang Chen Ting (24) Sec 313 Introduction The aim of this experiment is to explore the factors which affect the movement of materials in and out of the cells. The dark red or purple colour of Beetroots is caused by a pigment called betalain that is found within the vacuole of the beetroot cells. The pigment remains intact within the cell if the cells are not “stressed” by the external environment. In this exploration, two factors that...

Beet, Color, Diffusion 1565  Words | 3  Pages

Open Document

Osmosis: Cell Wall and Cover Slip

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 Slip  Tissue Paper  Blade  Rhoeo discolor Leaves  Salt Solution • Procedures:  Place a drop of distilled water on a clean glass slide.  With the use of a blade, cut a thin slice of the lower epidermal leaf (red violet in color) of the Rhoeo discolor...

Cell, Cell membrane, Cell wall 611  Words | 2  Pages

Open Document


OSMOSIS IN POTATO Osmosis describes a physical process in which any solvent moves, without input of energy. The word 'osmosis' is particular to the diffusion of water molecules into the cell. These are the ways to see the effects of osmosis on a plant by comparing potatoes placed in different types of water. These are the materials needed to view osmosis in action: Potato (sliced into 3) 3 Glasses Water Salt Methods: 1. Fill Glass A with pure water while Glass B, mix salt and...

Buoyancy, Cell wall, Chemistry 736  Words | 3  Pages

Open Document

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

Open Document

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

Open Document

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

Open Document


concentrations on the rate of osmosis. Artificial cells were filled with different solute concentrations and placed in water and weighed at equal time intervals to show how the water moves across cell membranes and down its concentration gradient into the lower concentrated area. The weights of the cells were recorded each interval, and then the rate of osmosis was found by calculating the corrected cumulative change in weight. The prediction made was that the cells with the higher solute concentrations...

Cell wall, Chemistry, Concentration 1202  Words | 4  Pages

Open Document


Bio lab dcp Rough data collection Concretion of sucrose(mol) (±0.1) Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 No. of cells No. of cells plasmolysis No of cells No of cells plasmolysis No of cells No of cells plasmolysis No of cells No of cells plasmolysis No of cells No of cells plasmolysis 0.3 43 7 39 5 40 9 38 6 34 4 0.4 40 6 40 8 40 6 38 7 40 8 0.5 42 16 44 17 42 13 43 18 42 17 0.6 42 22 42 19 43 20 44 19 45 22 0.7 47 23 43 ...

Cell, Cell biology, Cell membrane 491  Words | 5  Pages

Open Document

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

Open Document


Osmosis: How fast can you move? The Rate at which Osmosis Occurs when Exposed to Various Toxicities Within the human body many things are occurring at all times. Without these small, seemingly insignificant processes all human life would cease to exist. One of the aforementioned activities is Osmosis, or the movement of water across a selectively permeable membrane eventually establishing equilibrium on both sides of the concentration gradient (Freeman 90). During this specific experiment involving...

Cell, Cell biology, Cell wall 958  Words | 3  Pages

Open Document

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

Open Document


1: Defining the Problem and Selecting Variables CELLS are the basic unit of structure in all organisms and the smallest unit of life. All living things are made of cells. Multicellular organisms (humans) are composed of many cells. Unicellular organisms (bacteria) are composed of only one cell. Existing cells come from other pre-existing cells and cannot be created from non-living materials. All cells are surrounded with membrane called CELL MEMBRANE (PLASMA MEMBRANE). Plasma membrane is semipermeable...

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

Open Document


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 showing cheek cells (there should be hundreds). What do all of...

Bacteria, Cell, Cell membrane 1269  Words | 4  Pages

Open Document


Osmosis Aim: To determine the concentration of cell sap in a potato cell. Osmosis is the movement of water through a semi-permeable membrane. It starts from a weak solution and becomes a more stronger solution until the concentrations on both sides are equal. To investigate the range of solutions needed to find the point at which the surrounding solution is the same as the cell sap in the vacuole. ...

Chemistry, Concentration, Liquid 560  Words | 3  Pages

Open Document

Effect of Osmosis on Potato

Effect of Osmosis on Potato Aim: To investigate the effect osmosis has on potato pieces that are placed in different concentrations of sugar solutions in water. Hypothesis: I believe that the more saturated the solution is the lighter the potato will be, and the potato in the clear water will weigh more after being left in the solution over a 24 hour period. This is because the cell membranes in the potato act as semi permeable membranes (meaning that they only allow certain molecules through)...

Concentration, Force, Mass 956  Words | 4  Pages

Open Document

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

Open Document

Effect of Osmosis on Potato Chips

Effect Of Osmosis On Potato Chips Osmosis is a special kind of diffusion involving the movement of water through a semi permeable membrane, separating solutions of different concentrations. The water passes from a region of high concentration to a region of low concentration until the two concentrations are equal in water. Many cell membranes behave as semi permeable membranes, and osmosis is a vital mechanism in the transport of fluids in living organisms for example in the transport of water...

Concentration, Mass, Potato 718  Words | 3  Pages

Open Document


An investigation how sugar solutions of different concentrations affect osmosis. Research Osmosis is the diffusion of water across a partially permeable membrane from a dilute solution to one of a higher concentration. If a solution has a low concentration then the amount of (in the case of my investigation) sugar, the solute, will be low and the solution will be weak. If there is high amount of sugar then the solution will be concentrated (have a high concentration). When two solutions...

Chemistry, Concentration, Mass 1806  Words | 6  Pages

Open Document

The Cell structure and function

01) The Cell Structure and function Abstract In this lab the structures of various cells were viewed through a compound microscope. The bacteria in yogurt was viewed a long with a slice of potato, and a thin skin of red onion. The potato was dyed with iodine while the red onion was dyed with methane blue. The students had to assemble the first three slides. Two more slides were provided these are the yeast and protozoa cells. Those two are also viewed...

Archaea, Bacteria, Cell 713  Words | 3  Pages

Open Document

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 cell...

Cell, Cell membrane, Cell wall 346  Words | 2  Pages

Open Document

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 similar...

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

Open Document

Effect of Ethanol on Beetroot Membrane

Hypothesis: To investigate the effect of different concentrations of ethanol on the permeability of beetroot cell membranes. Prediction: By exposing a membrane to a solvent, ethanol, it will increase its permeability. So the higher the concentration of the solvent, the more permeable the membrane will be. But if the concentration of the ethanol is beyond a certain limit, it may break down the cell membrane to the point where there is in fact no overall effect as the ethanol would disturb the...

Cell, Cell membrane, Lipid 1567  Words | 7  Pages

Open Document

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

Open Document

Observing Mitosis and Meiosis on Cell Specimens

Observing Mitosis and Meiosis on Cell Specimens Name: Low Celine Tables of Content…………………………………………………………………………….ii List of Illustrations…………………………………………………………………………… iii Synopsis………………………………………………………………………………………. iv 1. Objectives of Experiment………………………………………………………………… 1 2. Introduction……………………………………………………………………………….1 3. Theory…………………………………………………………………………………….. 2 4. Procedures………………………………………………………………………………... 3 5.1 Preparation of Onion Root...

Cell cycle, Chromosome, Eukaryote 1967  Words | 6  Pages

Open Document

Factors Affecting the Movement of Water Through Osmosis

the movement of water through osmosis Introduction In this I will be investigating what effects the movement of water through osmosis. Osmosis is the diffusion of water. It is the process in which fluids pass through a partially-permeable membrane. It is the movement of water from high water concentration to low water concentration. Plant cells react to osmosis by hypertonic, isotonic and hypotonic. Keywords Hypertonic – is when the water outside of the cell is lower than that inside. Isotonic...

Boiling tube, Cell, Cell wall 1599  Words | 6  Pages

Open Document

The Effect of Different Salt Concentrations on Osmosis

The effect of salt concentrations on the mass of the pear cubes ‘Pyrus’ after being soaked in water Aim: The effect of salt concentrations on the mass of the pear ‘Pyrus’ pieces shaped as cubes of 1cm. Background: Osmosis is the net movement of water molecules through a semi-permeable membrane from an area of higher water potential to an area of lower water potential. Water makes up to 70-90% of living cells and cell membranes are partially permeable membranes. Dissolved substances attract...

Chemistry, Concentration, Diffusion 1194  Words | 4  Pages

Open Document

Effect of Temperature on Cell Membrane

Introduction To determine the effects of stressful experimental treatments on living membranes we are going to examine how fresh beets roots react when they are exposed to different temperatures. Membranes are an important feature of plant cells and they act as a barrier that separates the interior of the cell from the external environment (Campbell 133). They organize specific chemicals and reactions into specific compartments within the cell. Generally, cell membranes consist of phospholipids...

Beet, Betalain, Betanin 1674  Words | 5  Pages

Open Document


out of the biological material and collected in suitable receiving vessels. AIM OF EXPERIMENT * To view the parts of a cell * To differentiate between plant and animal cell APPARATUS 1. Microscope 2. Filter paper 3. Cover slip 4. Glass slide 5. Knife 6. Litmus paper MATERIALS 1. Potato 2. Onions 3. Iodine 4. Cheek cells 5. Methylene blue 6. Distilled water PROCEDURES A. Observation of starch grain i. The potato was cut to obtain...

Bacteria, Cell, Cell membrane 1210  Words | 4  Pages

Open Document

Become a StudyMode Member

Sign Up - It's Free