The citric acid is a stage of catabolism that oxidizes acetate into carbon dioxide and generates energy. There are eight enzymes involved in the citric acid cycle.
1. Which enzymes produce NADH as a product?
a. alpha-ketoglutarate dehydrogenase
b. succinate dehydrogenase
c. malate dehydrogenase
d. isocitrate dehydrogenase
2. Which enzymes produce carbon dioxide as a product? Select all that apply.
a. malate dehydrogenase
b. isocitrate dehydrogenase
c. succinate dehydrogenase
d. alpha-ketoglutarate dehydrogenase
3. Which enzymes produce coenzyme A as a product? Select all that apply.
a. fumarase
b. citrate synthase
c. succinyl-CoA synthesase
d. citraste synthase
4. Which enzymes have an alpha-keto acid substrate? Select all that apply.
a. fumarase
b. alpha-ketoglutarate dehydrogenase
c. citrate synthase
d. malate dehydrogenase
5. Which enzyme catalyzes a hydration reaction?
a. aconitase
b. fumarase
c. citrate synthase
Answers: 3
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