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
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osmosis? 5. Define osmosis‚ hypertonic‚ hypotonic‚ isotonic solutions 6. What happens if you have a high concentration of salt water on the outside of the egg‚ yet there is very little salt inside the egg? What direction will the water move? Is this solution hypertonic‚ hypotonic‚ or isotonic? 7. What happens if you place another egg into a bowl of pure water? What direction will the water move? Is this solution hypertonic‚ hypotonic‚ or isotonic? 8. What cell part controls what enters and leaves
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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) Total Diameter
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experiment that will determine what concentration of solute is isotonic with the specimen cells. (Design) Procedure: You will be provided with the following materials: Potato‚ potato corer‚ scalpel‚ forceps‚ electronic balance 10 % salt solution‚ distilled water‚ 50 mL beakers‚ graduated cylinder‚ paper towel You must design a procedure that will enable you to determine the concentration of salt that is isotonic with your specimen. You may use only the materials above and
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Diffusion And Osmosis Abstract In this Diffusion and Osmosis lab a total of three experiments were performed. For experiment 5.1 we investigate diffusion through a selectively permeable membrane and the many factors that influence the rates of diffusion. In experiment 5.2 we investigate both animal and plant cells in different molar solutions and the different osmotic behaviors within the cells. In experiment 5.3 we test the osmolarity of plant cells through the usage of potato tuber cells
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Name:_______________________ Date:___________ Period:______ Page:_______ Potato Diffusion Lab Hypothesis:________________________________________________________________________ __________________________________________________________________________________ Materials Aprons/Goggles Potato Slice (2-3cm thick) Potato Borer Triple beam balance 6 x 100mL beakers plastic wrap Paper towel 50mL Distilled Water 50mL 0.2M Sucrose solution 50mL 0.4M Sucrose solution 50mL 0.6M Sucrose
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moved out of the cell because there was a higher concentration of water inside the cell than outside (there were more water molecules inside). 3. Compare and contrast what happens to an animal‚ a plant‚ and a Paramecium cell in a hypotonic‚ an isotonic‚ or a hypertonic solution. All cells respond similarly in the three solutions. In hypotonic solutions they gain
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PHYSIOEX 9.0 REVIEW SHEET EXERCISE 4 Endocrine System Physiology NAME ___ LAB TIME/DATE ___ ACTIVITY 1 Metabolism and Thyroid Hormone Part 1 1 Which rat had the fastest basal metabolic rate (BMR)? ___ ___ 2 Why did the metabolic rates differ between the normal rat and the surgically altered rats? How well did the results compare with your prediction? ___ ___ ___ 3 If an animal has been thyroidectomized‚ what hormone(s) would be missing in its blood? ___ ___ 4 If an animal has been
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hypothesized that if the eggs lost weight after being submerged‚ then the solution used to submerge the egg was hypertonic. If the egg gained weight‚ then the solution was hypotonic. If‚ by chance‚ the weight remained unchanged‚ then the solution would be isotonic. The
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