An Enzyme Is Composed of Four Identical Subunits

question 45

Multiple Choice

An enzyme is composed of four identical subunits. Binding of substrate to one subunit stimulates more rapid binding of substrate to each of the other three subunits. This enzyme is most likely regulated by which of the following mechanisms?

• A) noncompetitive inhibition
• B) competitive activation
• C) competitive inhibition
• D) cooperativity

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Definitions:

Plant And Equipment

Physical assets of a business that are permanent structures or fixed machinery used in operations.

Inventory

The total amount of goods and materials held in stock by a business, intended for sale or production.

Partnerships

A business organization in which two or more individuals own and operate the business together, sharing in profits and liabilities.

Corporations

Legal entities that are separate from their owners, with the ability to own property, incur liabilities, and sell stock.