potential to a region of lower water chemical potential. (Tzahi 2006) To demonstrate osmosis lab‚ artificial cells were made with various sucrose concentrations and were placed into beakers of different sucrose solutions. Overall the results showed that the higher percentage of concentration gradient of sucrose‚ the more the artificial cells absorbed. Introduction: The phenomenon being investigated in the lab was how the concentration gradient affects the rate of osmosis in a cell. Osmosis is the
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Activity: Name: Instructor: Date: Blood Glucose Regulation Sandra Shakur January 25‚ 2015 Predictions 1. Plasma glucose levels will be highest immediately after the meal (0 hr). 2. Plasma ketone levels will be highest 1-3 hours after the meal. 3. Plasma insulin levels will be highest before the meal (fasting). 4. Plasma glucagon levels will be highest before the meal (fasting). Materials and Methods 1. Name the Dependent Variable. plasma levels of glucose‚ ketones‚ insulin‚ and glucagon 2. Name
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B. Statement of the problem. General Problem The problem is if cassava starch is an effective component for biodegradable plastic. Specific problems The easiest problem to solve will be the texture and bubbles. The mixture can’t be too thick when it’s being made and heated. If it’s too thick‚ air bubbles will get trapped in the mixture when it’s heated and won’t be able to get out. Try adding more water. It will take longer to dry‚ of course‚ but that will help to get rid of the bubbles
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overall impact in this excitement a little on osmosis. Osmosis takes place when two solutions of different concentrations are separated by a semi-permeable membrane in which the solvent can pass through but not the solute. In our experiment‚ we used a sucrose solution that will be a hypotonic concentration of solute. This tells us that the solution has a lower concentration of water than does the cells. Therefore‚ due to osmosis‚ the cells will gain water weight also proven in the experiment given. If
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plausible mechanism was suggested in Time by Dr. Michael Brownlee of Albert Einstein College of Medicine in New York City (November 26‚ 1990‚ p. 52-59). Glucose is known to be chemically active and can form a temporary bond with many proteins‚ including hemoglobin. Over time‚ some of these proteins become permanently attached to the glucose and these sticky fragments aggregate to form what Brownlee calls "biological superglue". Brownlee suggests that this superglue is a "source of constant irritation"
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tested the blood glucose level of diabetic and non-diabetic people every 30 minutes starting from right before a meal was eaten up until two hours. I did this by measuring the amount of light absorbed by the solutions through a spectrophotometer. By doing so I found that for diabetics the maximum blood glucose increased more quickly than non-diabetics‚ which increased and decreased at a steady rate. With this information I was able to determine that the damaging effects of glucose molecules would
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Starch/Amylase Experiment Report Objective: The purpose of the starch/amylase experiment was to simulate and observe the process of enzyme digestion. Materials: * 1 small beaker * 2 large beakers * 2 cut pieces of soaked dialysis tubing * 2 dialysis tubing clamps or pieces of twine * 2 clean plastic pipettes * 1 bottle of Lugol’s solution * 2 glucose test strips Procedure: Begin the experiment by placing 4 full pipettes worth of cooked starch in a beaker. Then‚ use
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Amylases are enzymes that break down starch or glycogen. Amylases are produced by a variety of living organisms‚ ranging from bacteria to plants and humans. Bacteria and fungi secrete amylases to the outside of their cells to carry out extracellular digestion. When they have broken down the insoluble starch‚ the soluble end products such as (glucose or maltose) are absorbed into their cells. Amylases are classified based on how they break down starch molecules i. α-amylase (alpha-amylase)
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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
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different concentrations of sucrose solutions have an effect on the final weight for the potato tubers?” In this experiment we estimated the osmolarity of potato tuber cores by submersing different potato cores into sucrose solutions of 0.0-0.6M‚ and weighing the potato. The results showed the weight of the potato tubers had the highest percent change in weight meaning that they weighed more than the initial weight in sucrose solutions from 0.0-0.3M; it also showed that sucrose concentrations from 0.4-0
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