Osmosis Experiment Diana Arrowood Grand Canyon University BIO-100L Biology Concepts September 16‚ 2011 Osmosis Experiment Directions Use the information below to complete the Osmosis Experiment. Materials 1 fresh baking potato Water Salt Four small containers (i.e.‚ drinking cups or clear glasses) A metric ruler Methods and Procedure 1) 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 until
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Solubility of Carbohydrates ‚ Glucose ‚ Galactose and Lactose . Objective : To determine the relative solubility of glucose ‚ galactose and lactose by measuring their saturation point at the same constant temperature. Principle : With 10g distilled water contained in a beaker ‚ then add small quantities of the carbohydrate being test at a time with constant stirring until no more can dissolve ‚ saturation point is represented at r.t.p.. Test the carbohydrates ‚ glucose ‚ galactose and lactose
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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.
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2.3. Membranes and modules for forward osmosis: 2.3.1. FO Membranes Generally‚ any dense‚ non-porous‚ selectively permeable material can be used as a membrane for FO. Such membranes have been tested (in flat sheet and capillary configurations) in the past for various applications of FO. In early studies‚ the researchers applied various FO membrane materials‚ including bladders of pigs‚ cattle‚ and fish; collodion (nitrocellulose); rubber; porcelain; and goldbeaters’ skin [36]. By 1960‚ Loeb and
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OSMOSIS LAB BACKGROUND INFORMATION. Dialysis tubing is being used to model a plasma membrane. Isotonic solutions are solutions that have the same concentration of solutes on both sides of the membrane. Hypertonic solutions are solutions that have more solute to the one with less solute. Hypotonic solution are solutions that have less solute to the one with more solute. RESEARCH QUESTION:which dialysis tubing will gain the distilled water and which one will loss its content
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Objective: To observe the effects of osmosis on eggs placed in vinegar (5% acetic acid)‚ syrup (60% sugar solution)‚ and water (100% distilled). Hypothesis: Hypothesis #1: It was hypothesised that the egg would gain 59 grams of mass after soaking in vinegar for 24 hours. Hypothesis #2: It was hypothesised that the egg would become larger when soaked in syrup than it once was due to the hypotonic environment. Hypothesis #3: It was hypothesised that the egg would soak in water for 72 hours‚ losing
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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
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Biology Planning Exercise June ‘04 The Uptake of Glucose in Yeast Cells Glucose is absorbed across the cell surface membrane (plasma membrane) of most cells. A convenient way to investigate this is to use a solution of glucose and a suspension of yeast cells. The amount of glucose taken up from the glucose solution by yeast cells in a fixed length of time can be measured. At the end of the fixed length of time‚ further uptake of glucose is prevented by transferring the yeast suspension to
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Glucose challenge was conducted through intravenous application of 50% glucose (0.3 g/kg of body weight) in 1 min periods in the antecubital vein. The clock was restarted at the beginning of glucose application. Samples used for measuring insulin and c-peptides were taken precisely in +2 min‚ +4 min‚ +6 min and +8 min after initiation of glucose administration. Samples for measuring glycemia were taken in +2 min‚ +4 min‚ +6 min and +8 min. Upon completed sampling‚ insulin infusion was stopped‚ while
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Variables in Glucose Tolerance lab was to examine the changes in blood sugar during glucose tolerance test conducted with test rats. We will be using three rats and perform the Oral Glucose Tolerance Test to measure the glucose levels in the rats blood. The oral glucose tolerance test is a laboratory method to check how the body breaks down (metabolizes) blood sugar. Glucose is the sugar that the body uses for energy. Patients with untreated diabetes have high blood glucose levels. Glucose tolerance
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