When Compared to Living Organisms, Viruses Display Several Unusual Features;

question 46

Multiple Choice

When compared to living organisms, viruses display several unusual features; one of the most striking is that

• A) viruses do not evolve.
• B) viral reproduction utilizes a cloning strategy that is independent of DNA.
• C) viruses utilize both DNA and RNA in their biochemistry.
• D) viruses are not constructed from cells.

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Definitions:

Melatonin

A substance secreted by the pineal gland that controls the rhythm of sleeping and waking.

Cerebellum

A part of the hindbrain involved in muscle coordination and balance.

Pons

A part of the brain located in the brainstem, critical for relaying messages between the brain and the spinal cord and regulating sleep.

Reticular Formation

A network of nerves in the brainstem that plays a key role in controlling arousal and alertness.