36. Which statement below best describes the usual relationship of the inhibitor

Question

36. Which statement below best describes the usual relationship of the inhibitor molecule to the allosteric enzyme in feedback inhibition of enzyme activity? a. The inhibitor is the substrate of the enzyme. b. The inhibitor is the final product of the metabolic pathway. c. The inhibitor is the product of the enzyme-catalyzed reaction. d. The inhibitor is a metabolically unrelated signal molecule 37. The unique properties of different membranes are primarily a function of their a. proteins. b. phospholipids. c. cholesterol molecules d. glycolipids.

Explanation / Answer

36. The answer is: d. The inhibitor is a metabolically unrelated signal molecule.

The inhibitor binds to an allosteric site and alters the active site such that substrate now is unable to bind to the active site. It is not metabolically related to the substrate or the product.

37. The answer is: a. proteins.

The proteins associated with the biological membranes provide unique properties to the membrane. For example, the cells in the eyes have different membrane proteins from the cells in the liver.

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