Since the Plasma Membrane Blocks the Passage of All but a Few

question 31

Multiple Choice

Since the plasma membrane blocks the passage of all but a few molecules with specific traits, it is necessary for other molecules to

• A) pass through the membrane via pores made of carbohydrates.
• B) be broken down into their constituent atoms to move through the membrane.
• C) be converted into other types of molecules so that they meet the specific traits necessary.
• D) pass through the membrane via nucleic acids.
• E) pass through the membrane via proteins.

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Definitions:

Centrally-Planned Economy

An economic system where all major decisions regarding production, distribution, and consumption are made by the government.

Economic Activity

The total amount of production, distribution, and consumption of goods and services in an economy.

Marginal Cost

The bump in complete expenses that occurs when an additional unit of a product or service is produced.

Heart Rate Monitor

A device that measures and displays the number of heartbeats per unit of time, used to monitor heart activity during exercise or daily activities.