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Biology Exam 3- LSU Glowinski
Notes
20
Biology
Undergraduate 2
04/12/2013

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Term
1. What is not required for the light reactions of photosynthesis?
Definition
Carbon Dioxide
Term
2. As electrons move through the ETC II what happens to their energy?
Definition
b. It decreases as the electrons create a H+ gradient
Term
3. Before the process of photosynthesis existed, which gas was rare in Earth’s atmosphere?
Definition
O2
Term
4. Which is true concerning the light reactions of photosynthesis?
Definition
a. Facilitated diffusion of H+ is coupled to the synthesis of ATP
Term
5. Why is the Calvin Cycle a cycle?
Definition
d. The process begins and ends with RuBP
Term
6. What is the primary function of the Calvin Cycle?
Definition
c. To construct the building blocks of sugars from CO2
Term
7. The replacement electrons for the reaction center of photosystem II come from?
Definition
d. H2O
Term
8. The replacement electrons for the reaction center of photosystem I come from?
Definition
d. ETC II
Term
9. If a plant lacked a stomata then what would not be able to enter the plant?
Definition
a. CO2
Term
10. An albino corn that lack chlorophyll would most likely
Definition
c. Fail to flourish because it cannot capture adequate light energy
Term
11. Which is true regarding light reactions?
Definition
c. Water is required
Term
12. Which correctly describes flow of electrons in photosynthesis?
Definition
b. H2O -> Photosystem II -> Photosystem I -> NADP
Term
13. Where does the majority of the biomass of an Oak Tree come from
Definition
Air
Term
14. Suppose you are studying photosynthesis in a research lab. You grow plants in a chamber with a source of CO2 that has a radioactively labeled carbon atom that allows you to follow that carbon molecule throughout the entire photosynthetic process. What photosynthetic product will be radioactive?
Definition
c. Glucose
Term
15. What reactant of photosynthesis does the oxygen we breathe come from?
Definition
b. H2O
Term
16. In general, cells derive energy from different nutrients in the following order:
Definition
b. Carbohydrates, the lipids, then proteins
Term
17. You are carrying out an experiment on an aquatic plant in your fish tank. You decide to expose the plant to varying wavelengths of light to determine which wavelength is best for the light dependent reactions. Which of the following products could you measure to determine what wavelength of light is optimum for the light dependent reactions?
Definition
a. Oxygen Production
Term
18. You are carrying out an experiment on several aquatic plants in your fish tank. You decide to expose 2 of the plants to green light and 2 of the plants to blue light. You want to determine which type of light is best for the light dependent reactions so you decide to measure the amount of oxygen bubbles produced to reach your conclusions. Which of the following results would be expected?
Definition
a. There would be more bubbles from the plants in blue light compared to green light.
Term
19. What is the correct order for the reactions of the Calvin-Benson cycle?
Definition
c. carbon fixation, synthesis of G3P, regeneration of RuBP
Term
20. All of the following are part of the Calvin-Benson cycle EXCEPT:
Definition
b. Synthesis of ATP
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