The University of Oklahoma, Norman CHEM 3653 Quiz-20: 1)In the Calvin cycle, 3-phosphoglycerate is ultimately converted into which hexose phosphate? glucose 1-phosphate

The University of Oklahoma, Norman

CHEM 3653

Quiz-20:

1)In the Calvin cycle, 3-phosphoglycerate is ultimately converted into which hexose phosphate?

1. 1. glucose 1-phosphate.
   2. glucose 6-phosphate.
   3. fructose 6-phosphate.

d. All of the answers are correct.

2. Which sugar(s) is (are) converted into ribulose 5-phosphate by a single enzymatic step

a. ribose 5-phosphate.

b. xylulose 5-phosphate.

c. erythrose 4-phosphate.

d. heptulose 5-phosphate.

3. Protons can flow into the mitochondrial matrix through (Choose all correct answers)

a. UCP-1.

b. ATP synthase

c. cytochrome bf

d. Dinitrophenol

4. In the presence of oxygen Rubisco will generate
   1. phosphoglycerate that can ultimately be used to generate glucose.

b. phosphoglycerate and phosphoglycolate.

3. NADPH to be used for the synthesis of glucose.
4. ATP as an energy source for gluconeogenesis.

5. Which of the following enzymes feeds electrons to the electron chain?

a. glycerol 3-phosphate dehydrogenase.

b. malate dehydrogenase

c. succinate dehydrogenase.

d. succinate-Q reductase.

5. alpha-ketoglutarate dehydrogenase.