Which One of the Following Best Explains Why People Get

question 44

Multiple Choice

Which one of the following best explains why people get so many colds in their lifetime?

• A) The immune system has a hard time identifying the viruses that cause the colds.
• B) The viruses that cause these colds constantly produce new antibodies, which cause the symptoms.
• C) These individuals do not produce enough white blood cells.
• D) The viruses that cause colds evolve rapidly, which results in a change in their antigenic structure.
• E) The B cells of these individuals destroy their T cells.

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Definitions:

Excretion

The process by which living organisms remove waste products of metabolism and other non-useful materials from their bodies.

Metabolic Waste

Substances left over from metabolic processes (like cellular respiration) that cannot be used by the organism and must be excreted.

Body

The physical structure of an organism, including its organs and tissues.

Osmolarity

The number of osmoles of solute per liter of solution. See osmole.