Name: ___________________________
Chemistry 360, Exam 4
May 2, 1997
General instructions: Read each question carefully and give the answer in the expected format. If you need a calculator, pencil, eraser, more paper, etc., ask. Abbreviations other than those routinely used are discouraged to guard against misinterpretation.

Part A. Definitions (2 pts each)
1. Limit branch-
2. Gluconeogenesis-
3. Rubisco-
4. Replication-
5. Calvin cycle-
6. Okazaki fragment-
7. Limit dextran-
8. Light reaction-
9. Stroma-
10 Sigma factor-
11. Cyclic photophosphorylation-
12. Replication bubble-
13. Transcription-
14. TATA box-

Part B.
1. Explain the regulation of glycogen synthesis/glycogen degradation. (5 points)

2. What are the three steps of glycolysis that are not used in the reverse direction during gluconeogenesis, and how are these steps worked around during gluconeogenesis? (10 points)

3. Explain how it is known that replication occurs by a semiconservative process. (5 points)

4. Identify the location in which the light reactions and the dark reactions of photosynthesis occur. (5 points)

5. What metal ion plays an important role in chlorophyll structure? (2 points)

6. In cyclic photophosphorylation in Photosystem I, ATP is produced even though water is not split. Explain how this process takes place. (5 points)

7. Schematically diagram the light reactions of photosynthesis. You do not have to write the half-reactions that occur, just identify the name and location of each major intermediate. (10 points)

8. Schematically (no structures, just names) diagram the process of regenerating ribulose-1,5-bisphosphate in the dark reactions of photosynthesis. (10 points)

9. Diagram the process of synthesizing and processing a mRNA molecule. (10 points)

10. Explain the process by which the lagging strand is synthesized. (10 points)