The Rate Controlling Step in Cholesterol Synthesis Is Catalyzed by

question 138

Multiple Choice

The rate controlling step in cholesterol synthesis is catalyzed by

• A) mevalonate kinase.
• B) methyl sterol oxidase.
• C) squalene monooxygenase.
• D) isopentenyl diphosphate isomerase.
• E) hydroxymethylglutaryl coenzyme A reductase.

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Definitions:

Coenzymes

Non-protein chemical compounds that bind to an enzyme and help it to catalyze a reaction.

Reversible Inhibitor

A substance that forms weak bonds with an enzyme, temporarily interfering with its function; a reversible inhibitor is either competitive or noncompetitive. Compare with irreversible inhibitor.

Chemical Bonds

The attraction between atoms or molecules that allows the formation of chemical compounds, can be ionic, covalent, or metallic.

Enzyme

Organic compounds that considerably accelerate nearly all chemical processes occurring inside cells.