An Enzyme Catalyzes a Substrate into a Final Product

question 22

Multiple Choice

An enzyme catalyzes a substrate into a final product. When the concentration of the final product is high enough, it binds to a regulatory site on the enzyme. This binding at the regulatory site changes the shape of the enzyme, which prevents it from binding the substrate and prevents formation of more final product. This is an example of a(n) ________.

• A) posttranslational modification
• B) allosteric enzyme
• C) translational repressor
• D) methylation

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Definitions:

Carrying Value

The net amount at which an asset or liability is valued on the balance sheet, factoring in depreciation, amortization, or impairment costs.

Paid-in Capital

Capital received by a company in exchange for shares of stock, exceeding the par or stated value of the shares.

Common Stock

Equity ownership in a corporation, usually with voting rights and dividends.

Face Value

The nominal value of a security stated by the issuer, also known as the “par value.”