Link Reaction and Krebs Cycle Flashcards
What reaction makes acetate?
the oxidation of pyruvate
Where does the link reaction occur?
mitochondrial matrix
What are the products of the oxidation of pyruvate?
acetate and NADH and CO2
How many carbons are in acetate?
2
What does acetate form when it combines with coenzyme A?
acetylcoenzyme A
What is produced overall in the link reaction? (per glucose)
2 x Acetyl CoA
2 x NADH
2 x CO2
What is the job of coenzyme A?
to deliver the acetate so it can react with a 4-carbon compound
How many CO2s are produced from ONE cycle of the Krebs cycle?
2
How many molecules of ATP are produced in one round of the Krebs cycle?
1
Why are NADH and FADH needed?
needed to donate electrons to ETC in oxidative phosphorylation
How many reduced FAD are formed in ONE round of the Krebs cycle?
1
What are the products of the Krebs cycle PER GLUCOSE?
6 x NADH
2 x ATP
4 x CO2
2 x FADH
What is regenerated in the Krebs cycle?
the 4 carbon compound, oxoloacetate
What happens in the link reaction?
- decarboxylation (forms CO2, NADH and acetate)
- acetate combines with coenzyme A forming Acetyl-coA
Why does temperature impact the rate of respiration?
- enzymes involved in respiration
- rate of enzymes are impacted by temperature
