BIOL 112 Lecture 11: Oxidative Phosphorylation and Fermentation
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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?
Question 18
The process that forms new glucose in the liver is called ...
A. | glycogenolysis | |
B. | Krebs cycle | |
C. | lipolysis | |
D. | gluconeogenisis | |
E. | oxidative phosphorylation |
Question 57
A person exercises in their “fat burning zone” for 4 hours at 35% VO2peak. The O2 cost of exercise at that work rate is 0.5L/minute. Following exercise the subject rewards himself with an ice-cream sundae (700kcal). The following statement is true(assume 5kcal/lit of O2):
A. | The subject is in neutral energy balance | |
B. | The subject consumed fewer calories than they expended during exercise | |
C. | The subject consumed more calories than they expended during exercise | |
D. | Can’t say |
Question 52
The primary purpose of the citric acid cycle is...
aerobic glycolysis | ||
gluconeogenesis using lactate | ||
the decarboxylation of carbon compounds to produce NADH. | ||
the shuttling of hydrogen ions through the inner mitochondrial membrane |
Question 51
In aerobic ATP production, the role of oxygen is to...
to keep the electron transport chain operational | ||
to accept electrons from the 3rd cytochrome and thereby oxidizing it so it can accept new electrons | ||
act as a oxidizing agent by accepting electrons from the electron transport chain and combining with hydrogen ions (protons) | ||
all of the above |
Question 50
Glucose is necessary for fatty acid oxidation because...
its derivative, pyruvate, is condensated with carbonic acid to form oxaloacetate, which in turn is a necessary carbon compound in the citric acid cycle | ||
it is needed to convert fatty acids to fatty acyl-CoA which in turn is oxidized to acetyl CoA | ||
glucose is decarboxylated into cytochrome oxidase which is a necessary intermediate in the citric acid cycle | ||
its derivative, acetyl CoA, is condensated with carbonic acid to form lactase, which in turn is a necessary carbon compound in the citric acid cycle |