BIOC 2300 Lecture 24: Lecture 24
Get access
Related Documents
Related Questions
The reduced nucleotides NADH and FADH are converted to ATP via the electron transport chain and oxidative phosphorylation. The most widely accepted values among biochemists are shown.
Nucleotide Output | ATP Output |
NADH | 2.5 |
FADH2 | 1.5 |
Each acetyl CoA entering the citric acid cycle produces two CO2, three NADH, one FADH2, and one GTP (converted directly to ATP in the cell). Taking into consideration the conversion of reduced nucleotides to ATP, what is the total number of ATP produced by one glucose (2 Acteyl CoA) going through the citric acid cycle?
Which of the following accurately describe difference(s) between oxidative phosphorylation and substrate-level phosphorylation during aerobic respiration in eukaryotes?
a. | Oxidative phosphorylation relies on energy initially derived from redox reactions to power ATP synthase, and substrate-level phosphorylation relies on enzymatic reactions to phosphorylate ADP. | |
b. | Oxidative phosphorylation takes place in the inner mitochondrial membrane and substrate-level phosphorylation only occurs in the cytosol. | |
c. | Oxidative phosphorylation uses oxygen as a substrate and substrate-level phosphorylation uses phosphate. | |
d. | Oxidative phosphorylation takes place during glycolysis and the electron transport chain and substrate-level phosphorylation occurs during the citric acid cycle and chemiosmosis. | |
e. | Oxidative phosphorylation produces less ATP than substrate-level phosphorylation. |
7. In metabolism, food gets oxidized and the coenzymes NAD+ and FAD are reduced.
True | |
False |
8. Which of the following does not undergo oxidation or reduction during metabolism?
A. lipids | |
B. Coenzyme A | |
C. carbohydrates | |
D. FAD |
9. Which of the following is not a coenzyme?
A. NAD+ | |
B. Coenzyme A | |
C. ATP | |
D. FAD |
10. Which of the following is false regarding FAD?
A. FAD is an oxidizing agent. | |
B. FAD is the oxidized form. | |
C. FAD is a coenzyme | |
D. FADH2 is an oxidizing agent. |
11. How many carbon atoms are present in an acetyl group?
A. 1 | |
B. 2 | |
C. 3 | |
D. 4 |
12. The purpose of coenzyme A is to deliver acetyl groups to the citric acid cycle.
True | |
False |
13. What reacts with NADH and FADH2 to form NAD+ and FAD?
A. carbon dioxide | |
B. water | |
C. ATP | |
D. oxygen (and H+) |
14. Which metabolic process oxidizes NADH and FADH2
A. electron transport chain | |
B. oxidative phosphorylation | |
C. citric acid cycle | |
D. hydrolysis |
15. Which metabolic process converts ADP to ATP?
A. electron transport chain | |
B. oxidative phosphorylation | |
C. citric acid cycle | |
D. hydrolysis |