Which of the Following Statements Correctly Describes Carrier-Mediated Transport

question 414

Multiple Choice

Which of the following statements correctly describes carrier-mediated transport?

• A)It involves a specific membrane protein that serves as a carrier molecule.
• B)It always moves substances against a concentration gradient.
• C) It always requires energy expenditure.
• D) It always moves substances along a concentration gradient.

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Definitions:

Equilibrium Quantity

The quantity of goods or services supplied in the market at which the quantity demanded equals the quantity supplied, leading to a stable market price.

Supply

The total amount of a good or service that is available for purchase at any given price level.

Demand

The extent of a good or service that patrons are inclined and have the ability to secure at different price ranges over a set period.

Substitute

A product or service that can be used in place of another, offering consumers an alternative choice.