Facilitated Diffusion Across a Biological Membrane Requires ________ and Moves

question 31

Multiple Choice

Facilitated diffusion across a biological membrane requires ________ and moves a substance ________ its concentration gradient.

• A)energy; down
• B)transport proteins; down
• C)energy and transport proteins; against
• D)transport proteins; against

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Definitions:

Price-taker Industry

A Price-taker Industry is one in which individual firms have no control over the price of their product and must accept the market price as determined by supply and demand.

Constant Cost Industry

An industry wherein the costs of production do not change as the overall level of output increases or decreases.

Entry Barriers

Obstacles that prevent new competitors from easily entering an industry or area of business, including high startup costs, licensing requirements, and access to technology.

Zero Economic Profit

A situation where a firm's total revenue is exactly equal to its total opportunity costs, indicating no excess returns over the cost of capital.