Q979
Excess of ATP inhibits respiration by inhibiting one of the following enzymes
A.
Phosphofructokinase
AnswerB.
Hexokinase
C.
Pyruvic decarboxylase
D.
Aldolase
Answer: Option A
Solution
Answer: Option A
Solution:
Excess of ATP inhibits respiration by inhibiting one of the following enzymes that are Phosphofructokinase.Low concentrations of ATP inhibited phosphofructokinase activity by decreasing the affinity of the enzyme for the other substrate, fructose 6-phosphate. Citrate, and other intermediates of the tricarboxylic acid cycle, also inhibited the activity of phosphofructokinase.