Which of the Following Statements Most Accurately Describes a Selectively

question 9

Multiple Choice

Which of the following statements most accurately describes a selectively permeable membrane?

• A)Solutes are never able to cross the membrane.
• B)Large molecules are always excluded from crossing the membrane.
• C)Substances can only pass through the membrane with the help of either active or passive transport proteins.
• D)Certain solutes move freely across the membrane by simple diffusion while others must be helped across by active or passive transport proteins;some substances are completely excluded from crossing the membrane.

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Definitions:

Marginal Utility

The extra pleasure or benefit obtained from consuming an additional unit of a product or service.

Total Utility

The total satisfaction or benefit that a consumer derives from consuming a certain quantity of goods and services.

Marginal Utility

The change in total satisfaction or pleasure derived from consuming one more unit of a good or service.

Total Utility

The overall satisfaction or benefit a customer receives from consuming a particular good or service.