Concept: Citric Acid Cycle8m
Energy in acetyl CoA supports reactions of the citric acid cycle and _____.
A. reduces FADH to FAD
B. drives the oxaloacetate to form citrate
C. creates a proton gradient
D. generates directly ATP
E. reduces oxygen to water
Identify the oxidant in the following coupled redox reaction: Malate + NAD+ → Oxaloacetate + NADH + H+. The coupled reaction involves these two half reactions:
NAD+ + 2H+ + 2e- → NADH + H+
oxaloacetate + 2H+ + 2e- → malate
Enzymes that drive the Krebs cycle (a.k.a. citric acid cycle), which takes place in the mitochondrial matrix, most likely rely on _____ for transport.
One function of Citric Acid cycle is:
A. the production of ADP.
B. the reduction of NAD+ to NADH.
C. The oxidation of FADH2 to FAD.
D. The conversion of glucose to lactic acid.
E. The production of sugar.
How does the increased synthesis of aspartate and glutamate affect the TCA cycle? How does the cell accommodate this effect?
How many times does the citric acid cycle have to turn to eliminate the 2 carbons entering as acetyl CoA as CO2?