Question

7. What type of regulation is when the active site of an enzyme closes and

cannot bind substrates due to an interaction between a molecule and a
regulatory site on an enzyme?
Competitive activation
Direct competition
Non Competitive inhibition
Competitive inhibition
Allosteric activation

Answer 1

Non competitive inhibition is a type of regulation in enzymes where a regulatory molecule binds to an allosteric site, causing the active site to close and preventing substrate binding.

Step-by-step explanation:

The type of regulation described in the question is Non Competitive inhibition.

Non competitive inhibition occurs when a regulatory molecule binds to an allosteric site on the enzyme, causing a conformational change in the active site. This change prevents the enzyme from binding to its substrate, disabling its activity.

For example, the binding of a regulatory molecule to the enzyme pyruvate dehydrogenase in cellular respiration results in the inactivation of the enzyme, preventing the breakdown of pyruvate.

Learn more about Non Competitive inhibition