Question

What is allosteric regulation? a) In allosteric regulation, genes are expressed constitutively. b) In allosteric regulation, a small molecule binds to a large protein and causes it to change its shape and activity. c) In allosteric regulation, a gene is turned off by a repressor protein. d) In allosteric regulation, a gene is turned on by an activator protein

Answer 1

Answer:

b) In allosteric regulation, a small molecule binds to a large protein and causes it to change its shape and activity.

Explanation:

Allosteric regulation refers to the activity control of an enzyme by binding small molecules to regulatory sites on It. This binding causes an alteration of the protein conformation and consequently the shape of the active site and its catalytic activity are altered. Regulatory enzymes can act by either stimulating or inhibiting the activity of a protein.