Biomolecules Question 93
Question: Allosteric modulation is due to the inhibition action of enzyme by:
Options:
A) Competitive inhibition
B) Substrate concentration
C) Products of reaction
D) Enzyme concentration
Show Answer
Answer:
Correct Answer: C
Solution:
Allosteric modulation is also called feed back inhibition.
It is an enzyme regulatory mechanism where a product of a simple or chain reaction can function as temporary allosteric inhibitor.
An allosteric inhibitor combines with a regulator or allosteric site, other than active site if its concentration crosses a threshold value.
For example, excess of glucose-6-phosphate stops the activity of enzyme hexokinase that helps in its formation from glucose and ATP.
BETA
