krebs cycle

Question 1

what happens in the krebs cycle ?

Answer 1

acetyl co enzyme A combines with a 4c compound to form a 6c compound. the co enzyme A is regenerated in the process

6 carbon molecule is dehydrogenated reducing 2 molecules of NAD

it is also decarboxylated to form a 5 carbon molecule and produce CO2 as a waste product

the 5 c molecule is dehydrogenated making reduced NAD and reduced FAD. it is also decarboxylated to reform the 4 carbon molecule which can then join with more acetyl coenzyme A and repeat the cycle

Question 2

what is the net gain of reduced FAD in the krebs cycle?

Answer 2

2

Question 3

what is the net gain of carbon dioxide in krebs cycle?

Answer 3

4
and it diffuses out of the cell to be excreted by the organism

Question 4

what is the net gain of reduced NAD in the krebs cycle?

Answer 4

6 and it goes to the electron transport chain

Question 5

what is the net gain of ATP in krebs cycle?

Answer 5

2 and it diffuses out of the mitochondria for use in the cell