Biol 212 Worksheet:
Cellular Respiration
Supplemental Instruction
Iowa State University
Leader:
Course:
Instructor:
Date:
Greg
Biology 212 (2)
Kukday
9/23/15
1. REVIEW: What does it mean that the ETC and ATP synthesis are coupled? How does
DNP affect this? What does it mean that DNP causes a leak? What are the negative
effects of DNP? (ie. Why is it dangerous?)
2. What is the net reaction for photosynthesis? What does its ΔG = 686 kcal/mol mean?
3. What organelle in plants is used for photosynthesis? Tell a bit about the internal structure
of this organelle, including what thylakoids, granum, and stroma are.
4. What is the source of energy for photosynthesis? How do plants make high energy free
electrons?
5. What are the two types of reactions that occur in photosynthesis?
6. Describe the basic process of the light reactions.
7. What is chlorophyll? What is its basic structure, and what is the function of each part of
the structure? What wavelengths of light can chlorophyll absorb well and which can it
not absorb well? How does this relate to the color of plants that we see?
8. What are photosystems?
9. What is a PMF and why is that important for photosynthesis? What about NADP?
10. https://www.youtube.com/watch?v=hj_WKgnL6MI is a good review of light reactions.
11. TEST QUESTION: Which of the following accurately describes what DNP does?
a. Uncouples the ETC from ATP Synthesis
d. Excess consumption of CO2
b. Causes a proton leak which leads to a greater gradient
d. All of the above
12. TEST QUESTION: Which of the following is false?
a. A granum is a stack of thylakoids
c. A product of light reactions is NADH
b. Light is absorbed in the thylakoid membrane
d. All are true
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