Metabolism

Question 1

what are the three irreversible reactions of glycolysis

Answer 1

glucose+hexakinase—> glucose-6-phosphate
fructose-6-phosphate+ 6-phosphofructokinase –> fructose-1,6- bisphosphate
PEP+pyruvate kinase —> pyruvate

Question 2

where does glycolysis occur?

Answer 2

mitochondrial membrane

Question 3

where does the TCA cycle occur?

Answer 3

mitochondrial matrix

Question 4

how many ATP are generated from one cycle of aerobic respiration

Answer 4

36

Question 5

how many ATP are generated from one cycle of anaerobic respiration

Answer 5

2

Question 6

What is the purpose of the TCA cycle?

Answer 6

to release NADH and FADH2 which can deliver their electrons into the ETC. Energy released from the electron transfer causes active transport of H+ ions across the
inner membrane, which drives the ATPase pump so ATP can be generated.

Question 7

What is the final electron acceptor?

Answer 7

O2- forming water

Question 8

How are fatty acids converted to pyruvate?

Answer 8

beta oxidation

Question 9

What are the three rate determining enzymes of the TCA cycle?

Answer 9

pyruvate dehydrogenase
isocitrate dehydrogenase
alpha- ketaglutarate dehydrogenase