Cellular Respiration Flashcards
Chemical energy stored in ATP drives most _________.
Cellular Work
ATP is a renewable resource that can be regenerated by _______________.
The addition of inorganic phosphate to ADP
What is the final electron acceptor of cellular respiration?
Oxygen
The citric acid cycle transfers electrons to _____ and _____.
NADH and FADH2
Where does glycolysis occur?
In the cytosol
The immediate energy source that drives ATP synthesis by ATP synthase during oxidative phosphorylation is the
H+ concentration gradient across the membrane holding ATP synthase.
What metabolic pathway is common to both fermentation and cellular respiration of a glucose molecule?
Glycolysis
What is a characteristic of NAD+?
NAD+ is reduced to NADH in glycolysis, pyruvate oxidation, and the citric acid cycle
Summarize ATP use and production in the catabolism of each glucose molecule in glycolysis.
two molecules of ATP are used, and four molecules of ATP are produced
Glycolysis results in the net production of what set of molecules per glucose molecule?
2 NADH, 2 pyruvate, and 2 ATP
What reaction produced the majority of the CO2 released by the complete oxidation of glucose?
The citric acid cycle
Upon competition of the citric acid cycle, most of the energy originally stored in each glucose molecule catabolized by cellular respiration is stored in what molecule?
NADH
If glucose is the sole energy source for cellular respiration in an animal, what proportion of the carbon dioxide is derived from oxidation of pyruvate to acetyl CoA?
1/3
What is the product from the oxidation of pyruvate to acetyl-CoA?
NADH and CO2
What could be the products of three acetyl CoA molecules entering the citric acid cycle?
3 ATP, 6 CO2, 9 NADH, and 3FADH2