Krebs Cycle/TCA Cycle

Question 0

Acetyl coa —> ??? After CAC

Answer 0

2carbon dioxide molecules

-the two carbons from acetyl coa are not the ones in the carbon dioxide though

Question 1

Pyruvate —> ???

Answer 1

Pyr(2c) -> acetyl CoA(2c)
-by pyruvate dehydrogenase complex (PDC)
-decarboxylation (releases CO2)
-nad -> nadh
Goes through the citric acid cycle

Question 2

CAC net result

Answer 2

1 GTP=1ATP
3 NADH
1 FADH2
2 CO2

**we cash in the nadh and fadh2 later down the road for atp

Question 3

Beginning of the cycle

Answer 3

Combine acetyl coa(2c) + oxaloacetate(4c) and make citrate(6c)

Question 4

How many step of oxidation to citrate?

Answer 4

4 times eventually making oxaloacetate

Question 5

Regulation of the cac cycle

Answer 5

Most enzymes are activated by adp (low energy)

Inhibited by atp and nadh (high energy)

Question 6

Where does the tca occur

Answer 6

Mitochondrial matrix