Question

1. If acetyl-CoA is not metabolized by the citrate cycle, its most likely metabolic fate is

a	is used during glycolysis.
b	it is use to synthesize H2S.
c	is used to synthesize amino acids.
d	is used to synthesize fatty acids.
e	is transported across the cell membrane.

2. How is the pyruvate dehydrogenase enzyme regulated?

a	product inhibition
b	pH and the protonation state of the active site
c	proteolysis
d	covalent modification
e	pH and enzyme conformation

3.

Regeneration of NAD⁺ and FAD inside the mitochondrial matrix is required because

a	anabolic reactions generally require them.
b	they transport pyruvate through the matrix.
c	they maintain flux through the citrate cycle.
d	they are required for glycolysis.
e	they produce GDP through the citrate cycle.

Answer 1

Following is the - complete Answer -&- Explanation for the first question ( i.e. Question - 1 ), - of the given   

......Question Set.......in...Typed format....

Answer:

Option - (d) :  It is used to synthesize Fatty Acids.

Explanation:

We know, acetyl CoA - has several functions, one of them being - its involvement in the Citrate cycle. Otherwise it has another function in metabolism, i.e. it takes part in the synthesis of Fatty Acids...Therefore, the creation of Fatty Acid, can be called as the metabolic fate - of acetyl CoA.

Since , acetyl CoA is produced through glycolysis, the following can't be said:  i.e. " is used during glycolysis ".....or this can't be termed as its metabolic fate.