What compound provides the reducing power for Calvin cycle reactions?
a. ATP
b. NADH
c. NADPH
d. NADP+
Answer: C
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AP Biology Chapter 10
- You have isolated a previously unstudied protein, identified its complete structure in detail and determined that it catalyzes the breakdown of a large substrate. You notice it has two binding sites. One of theses is large, apparently the bonding site for the large substrate; the other is small, possibly a binding site for a regulatory molecule. What do these finding tell you about the mechanism of this protein?
- With respect to the enzyme that converts X to Y, substance A functions as _____.
- What is substance X?
- In the figure, why does the reaction rate plateau at higher reactant concentrations?
- A noncompetitive inhibitor decreases the rate of an enzyme reaction by____.
- According to the induced fit hypothesis of enzyme catalysis, ______.
- The lock-and-key analogy for enzymes applies to the specificity of enzymes____.
- Which of the following is true of enzymes?
- Which of the following does NOT occur during the Calvin cycle?
- Which of the following sequences correctly represents the flow of electrons during photosynthesis?
- Refer to the figure. If the carbon atom of each of the incoming CO2 molecules is labeled with a radioactive isotope of carbon, which organic molecules will be radioactively labeled after one cycle?
- In the process of carbon fixation, RuBP attaches a CO2 to produce a six-carbon molecule, which is then split to produce two molecules of 3-phosphoglycerate. After phosphorylation and reduction produces G3P, what more needs to happen to complete the Calvin cycle?
- What is the primary function of the Calvin Cycle?
- Where does the Calvin cycle take place?
- Which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin Cycle?
- Which process is most directly driven by light energy?
- In a plant, the reactions that produce molecular oxygen (O2) take place in_____.
- Which of the following statements best describes the relationship between photosynthesis and respiration?
- In mitochondria, chemiosmosis moves protons from the matrix into the intermembrane space, whereas in chloroplasts, chemiosmosis moves protons from the ____.
- In a plant cell, where are the ATP synthase complexes located?
- What are the products of linear electron flow?
- Which of the following are directly associated with photosystem I?
- In the thylakoid membranes, the pigment molecules in a light-harvesting complex_____.
- The electrons of photosystem II are excited and transferred to electron carriers. From which molecule or structure do the photosystem II replacement electrons come?