Warm Up 1 is due Wednesday January 21, at 9:30 am
Remember...look at the lecture notes and do the readings before (or while) doing the Warm Up. You may need to look terms up in the book's glossary or on the CD (or on google!).

First name :

Last name :

Class Section (1, 2 or 3):
(See Oncourse to determine whether you are in 1= A410, 2 = A411, or 3 = A413)

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.

Please enter a nickname (in case your answer is used in class!)

QUESTION 1: In your own words, what are two major differences between bacterial cells (prokaryotes) and animal cells (eukaryotes)?

QUESTION 2: All cells are surrounded by a plasma membrane, consisting of numerous proteins bobbing around in a fat-like layer of lipids. In your own words, describe one or two roles these proteins play in the functioning of the cell. In your own words, why do you think the lipid layer is crucial to maintaining the structure of the cell?

QUESTION 3: Most cells are microscopic (i.e. they can't be seen with the naked eye), 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 (75,000,000,000,000) very small cells, rather than just a bunch of very large cells?

4. Any thoughful comments, grumpy complaints, glowing praise, or harsh criticism about N100 so far? :) Any question about the material you would like me to address - life, scientific process, 3 domains, cells...?

You can change your mind as many times as you like before hitting Submit. Print this page before submitting if you want to keep a record of your answers. You will get a confirmation box to let you know that your answers were submitted, and will return to the N100 main page after submitting.