Warm Up 2 is due Wednesday, January 16, 2002 at 9:30 am.

Please type the last 4 digits of your Student ID Number: (Important!)
Please type your LAST name, and FIRST initial or first name:
Please type in a 'nickname': (In case your answer is used in class)

The following three questions refer to material you were to read in preparation for class. These questions require you to write a three or four sentence response. It is OK to answer 'I don't know' - but STATE WHY you are confused! (Don't just say 'I don't know' - you probably DO!) Each WarmUp worth 3 points if answered on time and must be submitted via the web.

QUESTION 1: Cells are generally microscopic, ranging in size from about 50 microns for animal cells to as small as 1 micron for bacterial cells. Why do you think that cells - animal, plant, or bacteria - don't get any bigger than this? Why do you think we are made of 75 trillion very small cells, rather than just a bunch of very large cells?

QUESTION 2:Starch (like bread, pasta) is a glucose polymer that gives us energy, but cellulose, an almost identical glucose polymer, is indigestible. Why do you think that ONE of these almost identical molecules can be digested, while the other can't? Why is cellulose (non-nutritive and indigestible) a very necessary part of our diet?

QUESTION 3:Butter and oil are both fats. Why is butter a solid at room temperature, but corn oil a liquid? What is "soft margerine"?

QUESTION 4: Totally Optional: Please provide any commemts about the class - likes, dislikes, suggestions, glowing praise (just kidding).

You may change your mind as often as you wish. When you are satisfied with your responses click the SUBMIT button. You will receive a "THANK YOU" page as a confirmation that your response has been sent to me.

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