Homework Help: Biology

Posted by CrissyXD on Tuesday, April 3, 2012 at 9:00am.

In class, I did an experiment with water and iodine solution in a beaker and also starch in a dialysis tube tied and placed in the beaker.

There were discussion questions I couldn't answer surely... please check my answers.

1. a)Use your results to determine the direction of net water movement in this experiment.
-water is moving into the starch solution

b)Is there a way to confirm this?
-increased water level of starch solution

2. Where was the concentration of water molecules greatest at the beginning of the experiment, inside or outside the tubing?
-outside of the tubing.

3. Explain the results of your experiment in terms of osmosis?
-because there was less water concentration in starch, the more concentration of water outside the tube went through the semipermeable membrane, or osmosis through to the starch solution.

No one has answered this question yet.

Answer this Question

Related Questions

Biology - I am doing a lab on Dialysis to check if starch moves through the ...
Biology- Amylase - Hello, In our class, we are doing a hypothetical digestion of...
chemistry - You have four beakers labeled A, B, C, and D. In beaker A, you place...
Chemistry - What is the purpose of adding zinc chloride in the preparation of ...
chemistry - What is the purpose of adding zinc chloride in the preparation of ...
Chemistry-please help - What is the purpose of adding zinc chloride in the ...
Biology - Will iodine react with sucrose or glucose? I would say no, because it ...
Biology - Will iodine react with sucrose or glucose? I would say no, because it ...
Chemistry - I found the following procedure to prepare starch indicator solution...
chemistry!! - We did a lab on iodine sublimation. I don't really understand ...

For Further Reading

First Name:
School Subject:
Answer: