Friday
April 25, 2014

Homework Help: AP Biology

Posted by Christian on Wednesday, October 22, 2008 at 5:53pm.

Okay, so in the Lab Assignment that I'm currently working on in AP Biology, there is a question that says:
- What results would you expect if a dialysis bag were filled with glucose and iodine and then placed into a beaker of starch and water?
Its a multiple choice question (which you think would make it easier but in all reality, it just confused me more.
The options were:
*A.)There would be a movement of glucose into the bag, and the water outside of the bag would turn purple.
*B.)There would be movement of glucose out of the bag, and the water outside of the bag would turn purple.
*C.)There would be a movement of starch into the bag, and the inside of the bag would turn purple.
*D.)There would be a movement of starch into the bag and the outside of the bag would turn purple.

First though was that water would move into the bag to an area of lower water potential but then I realized that there is no water in the bag to begin with and it isnt an option. I went over the lab several times and I can't seem to find the answer, the lab didn't come from my textbook so its not in there, and I don't know how to research it on the web because its not a definition or anything - Its lab results. I know that this isn't a place to come for straight answers on homework so I'm not asking for that. Just hoping maybe someone could shine a little light on this and point me in the right direction since at the moment, the information that I have (nothing) is getting me absolutely nowhere. Any help is highly appreciated. Thanks in advance.

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