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Exploring Life - Honors Biology Chapter 5 Molecules of Life

When you click Submit (at the bottom of this web page) it will save your work on the server for me. If you get a "proxy error" hit -refresh- until you get a "Thanks"

You might want to actually write your answers in Word (so you can spell check them) and then cut-and-paste into the boxes. That way, if the computer misplaces your work you can just re-paste the answers.

Since we may work on this over more than one day, I will keep track of what you have done. Feel free to click submit as you work to save your work to the server. 

TAB OR USE THE MOUSE Between the fields....

Answer the questions as best you can. The boxes will expand as you type if you need more space. (Don't worry if it is a one word answer. The box size is standard.)

Since you will be working in groups, put all the names of the people in the group in the box. The ideal group size is 2. As an exception I will allow groups of 3. No groups of 4 or 5. If you work as a group of 3 I expect better answers. Group sizes above 3 will be penalized in the grading.

You can work on this from home once you have signed up for Successnet.

Name (s):

 

Class Period

1 2 3 4 5 6 7 8

Open the Explore Life CD in a separate window.   (If you need help with that ask.)

If you have already signed up for SuccessNet, you can access the assignment that way, and also work from home (or library).

While there are questions on the CD, they provide answers, so I can't grade their questions. You will get a grade for the answers on this form!

Click on Chapter 5

-At any time you can refer back to the text via the menu on the side-

Start with Concept 5.1 The questions proceed with the disk. Do all the activities. You also have to do the "Closer Look" Answer my questions.

Question 1: What makes something an organic molecule? How many distinct covalent bonds can oxygen make? How many distinct covalent bonds can carbon make?

Question 2: What molecule is produced as polymers are formed?  Contrast dehydration synthesis and hydrolysis?

-At any time you can refer back to the text via the menu on the side-

Question 3: Compare glycogen and starch. What do they have in common? How are they different?

Question 4: In practical terms give one example of a consequence of oil and water being immiscible (not mixing) (think kitchen).

Question 5. Animal fat is rich in what kind of fatty acids, saturated or unsaturated?

Question 6 How different are estradiol, testosterone and DHEA? Why do you think they have such different effects?

Question 7. What process combines amino acids in making a polypeptide? What is meant by the "R" group? How many kinds of "R" groups are there in human proteins? 

 

Question 8: (Make sure you do the Closer Look).

A-What are the two kinds of secondary structure in proteins?

B-Describe (in your own words) the 4 levels of protein structure (primary, secondary, tertiary, quaternary).

C-What would be the effect of changing one amino acid in the sequence on the primary, secondary, tertiary and quaternary structures?

 

 

Question 9. For the enzyme in the simulation, what is the optimum temperature? Above are several graphs. Which graph best represents the effect of temperature on enzyme activity? What do you think the optimum temperature would be for human digestive enzymes (extra point for using Celsius!)?

 

 

If you have time you can go back through the CD for anything else you want to read more about.

      
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