Which of These Descriptions Applies to the Movement of Molecules

question 485

Multiple Choice

Which of these descriptions applies to the movement of molecules across the plasma membrane

• A)If two similar molecules can both combine with the same carrier, the presence of one of these molecules increases the rate of entry of the other.
• B)In simple diffusion, the rate of transport of a molecule is inversely proportional to the molecule's extracellular concentration.
• C)When a carrier becomes saturated, the maximum rate of transport is reached.
• D)Large molecules can cross it via nonselective, receptor-mediated endocytosis.

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Definitions:

Free-Trade Policy

A policy approach that encourages international trade by minimizing tariffs, duties, and other barriers to import and export.

World Price

The international market price of a good or service, determined by global supply and demand, which influences domestic prices and competition.

International Trade

The exchange of goods, services, and capital across international borders or territories, driven by economic motives like gaining access to new markets or acquiring resources.

Unilateral Approach

A strategy or action taken by a single nation or entity independently, without coordination with others.