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Water Potential Ap Biology Essay

Ap Biology Egg Osmosis Lab Essay

658 WordsDec 5th, 20123 Pages

AP Biology
August 23, 2012
Egg Osmosis Lab
Definition of osmosis: The diffusion of water across a selectively permeable membrane from high to low concentrations
Hypothesis: If I place an egg in vinegar, then the outer layer of the egg is going to become slimy and look like rubber. It will also become larger and bubbles will form on and around the egg.
Hypothesis: If I place an egg in corn syrup, then the egg will become small and the outer layer will not look like rubber any longer.
Day one:
Date started: 8/6
Volume: 2 oz. pH of acetic acid: 2.4
Day two
The egg shell completely disappears due to the vinegar reacting with the egg; bubbles form on the surface of the vinegar and on the egg because carbon dioxide was produced from…show more content…

This is also known as a hypertonic solution which explains why the egg will decrease in size. Corn syrup is a hypertonic liquid because it is very concentrated with not much water compared to the egg unlike water which is hypotonic because it contains more water than the egg. In this solution, the solute remains the egg, and the solvent is changed to corn syrup. Osmosis still plays an action because water is still passing through the membrane from high to low concentrations.
Hypothesis: If the egg is placed into water, then it will increase in size since water is a hypotonic liquid because it contains more water than the egg.
Day Five
Egg volume: 4oz.
Remaining water: 6oz.
Conclusion:
Osmosis took place in the egg under a variety of conditions because the membrane of the egg has tiny openings where water can pass through from high to low concentrations. On day one, it was a hypotonic solution because the higher concentration of water in the vinegar moved to the smaller concentration in the egg. This means the egg was filled with water, which resulted in the eggs increase in size. On day three, the hypotonic solution occurred because the corn syrup had a lower concentration of water than the egg. That means the egg released water into the corn syrup, which resulted in the eggs decrease in size. On day four, the egg was placed in water which resulted in an isotonic solution where the concentrations become even. This

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Нам необходимо число, - напомнил Джабба.  - Шифр-убийца имеет цифровую структуру. - Тихо, - потребовал Фонтейн и повернулся к Сьюзан.

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