THIS WEEK'S WARM UP #11 IS DUE BEFORE 9:30 AM WEDNESDAY, April 4, 2001

Please type 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 (Bioinquiry pp 208-222). 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 6 points if answered on time and must be submitted via the web.

Warm Up 1 responses,Warm Up 2 responses,Warm Up 3 responses, Warm Up 4 responses, Warm Up 5 responses, Warm Up 6 responses, Warm Up 7 responses, Warm Up 8 responses, Warm Up 9 responses, Warm Up 10 responses, Warm Up 11 responses, Warm Up 12 responses, Warm Up 13 responses, Warm Up 14 responses.

QUESTION 1: The Archaea are thought to be the most ancient group of organisms, first appearing on Earth about 3.3 billion years ago. The Archaea include organisms that grow at extremes - very high (or low) temperature, highly acidic or salty environments, needing neither light or oxygen to grow. What does this suggest about the environment on the Early Earth?

QUESTION 2: In the figure in your notes that shows the three domains in different colors, what do the lines between the different domains and different groups within domains represent? Why are some lines short and some lines long?

QUESTION 3: If there was once a "Common Universal Ancestor"that gave rise to the life forms we see on Earth today, what do you think would have been some of the characteristics of this organism? What types of events would have led this Common Ancestor to branch off into the Three domains we see today?

QUESTION 4: Comments, questions, and totally optional:

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.

*****************************************************************