Warm Up 4 is due Wednesday, February 12, 2003 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.

WarmUp1, WarmUp1 Responses, WarmUp2, WarmUp2 Responses, WarmUp3, WarmUp3 Responses,

QUESTION 1: One of my favorite Biology quotes is listed at the beginning of the lecture notes for photosynthesis: "Life is woven out of air by light". Aside from being a pretty phrase, what does this quote mean in terms of photosynthesis - think about this quote and in your own words, how would you say is life woven out of air by light??

QUESTION 2: Where within the plant cell does photosynthesis occur? Describe the location of the two main 'acts' of photosynthesis: the Light reactions and the Calvin Cycle reactions. What is the end result of the light reactions? What is the end result of the Calvin Cycle reactions? (you will need your notes to answer these questions!)

QUESTION 3: The sun is a clean, free, limitless (at least for the next 5 billion years or so...) source of energy that photosynthetic organisms have utilized for the last 2 billion years to supply their energy needs. Why do you think humans haven't switched to using the energy of the sun for our external energy needs like transportation, electricity, climate control of our homes?

QUESTION 4: Well, did you survive the first N100 exam? Questions, comments or suggestions --- good or bad --- on Exam 1?

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.

The text of this "What is Biology Good For" exercise is copyrighted under the name of Dr. Kathleen A. Marrs, 1999, 2000, 2001, 2003. There are no restrictions on its use by educators or by non-profit institutions as long as its content not modified, proper copyright acknowledgement is retained, and this statement is not removed.