Bob does nothing

Topics: Fat, Nutrition, Metabolism Pages: 3 (645 words) Published: September 25, 2014
1. Use Model 1 to show which atoms are present in each type of molecule by listing the symbol for each atom included. Carbohydrate has been done for you. a. Carbohydrate— C, H, O
b. Amino acid—C,H, N,O
c. Lipid-c, o, h
d. Nucleic acid—O,H,P

2. Which type of molecule includes an example with a long-chain carbon backbone? Lipid
3. In the molecule referred to in the previous question, what is the dominant element attached to the carbon backbone? Hydrogen
4. The fatty acid chain of the lipids is often referred to as a hydrocarbon chain. Discuss with your group why the chain is given this name and write a one-sentence definition for a hydrocarbon.

5. Which molecule has a central carbon atom with four different components around it?

6. Which molecule has a sugar, nitrogenous base, and phosphate group?

7. Discuss with your group members some similarities among all four types of molecules. List as many as you can.

8. What is the chemical formula of the first carbohydrate molecule shown?

9. What three structural groups shown do all amino acids have in common?

10. There are 20 naturally-occurring amino acids, and each one only varies in the structure of the R side chain. Two amino acids are shown in Model 1. What are the R side chains in each?

11. Using the information from above, is a carbohydrate or a lipid more likely to be a good source of energy for an organism?

12. What are the reactants of reaction A?

13. What are the products of reaction A?

14. Each of the reactants in reaction A is a single sugar molecule, also called a monosaccharide. What prefix before saccharide would you use to describe sucrose?

15. What are the reactants of reaction B?

16. When the two molecules in reaction B are joined together, what other two molecules are produced?

17. What product do all three reactions in Model 2 have in common?

19. These reactions are all referred to as dehydration synthesis or condensation reactions....
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