17. The occurrence of ___________ in essentially all living cells indicates that this process evolved very early in the evolution of life.
A. phagocytosis
B. oxidative phosphorylation
C. fermentation
D. photophosphorylation
E. glycolysis
18. Where does the citric acid cycle (Krebs cycle) occur?
A. between the envelope membranes
B. on the photosystem II reaction center (P680)
C. in the mitochondrial matrix
D. in the chloroplast stroma
E. in the intermembrane space
19. The ATP made during fermentation results from which metabolic process?
A. no ATP is made during fermentation
B. chemiosmosis
C. substrate-level phosphorylation
D. oxidation of NADH
E. photophosphorylation
20. A biology 208 student ground up some plant cells and centrifuged the homogenate. The supernatant was fractionated further. One fraction included an organelle that contained some DNA, released CO2 and took up O2. This organelle most likely is a:
A. nucleus
B. chloroplast
C. mitochondrion
D. vacuole
E. virus
17. The occurrence of ___________ in essentially all living cells indicates that this process evolved very early in the evolution of life.
A. phagocytosis
B. oxidative phosphorylation
C. fermentation
D. photophosphorylation
E. glycolysis
18. Where does the citric acid cycle (Krebs cycle) occur?
A. between the envelope membranes
B. on the photosystem II reaction center (P680)
C. in the mitochondrial matrix
D. in the chloroplast stroma
E. in the intermembrane space
19. The ATP made during fermentation results from which metabolic process?
A. no ATP is made during fermentation
B. chemiosmosis
C. substrate-level phosphorylation
D. oxidation of NADH
E. photophosphorylation
20. A biology 208 student ground up some plant cells and centrifuged the homogenate. The supernatant was fractionated further. One fraction included an organelle that contained some DNA, released CO2 and took up O2. This organelle most likely is a:
A. nucleus
B. chloroplast
C. mitochondrion
D. vacuole
E. virus
