In?uenza Virus Can Exhibit Constant Mutation of Viral Glycoproteins, Called

question 43

Multiple Choice

In?uenza virus can exhibit constant mutation of viral glycoproteins, called antigenic ________, or alternatively antigenic ________, which is a more serious phenomenon caused by the exchange of a viral gene with that of another in?uenza virus strain.

• A) drift; exchange
• B) exchange; drift
• C) drift; shift
• D) shift; drift

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Definitions:

Action Potentials

Brief electrical impulses that serve as the fundamental signals by which neurons communicate with each other.

REM Sleep

A stage of sleep characterized by rapid eye movements, where the brain is highly active and vivid dreaming is most common.

Dreaming

A mental process that occurs during sleep, characterized by narratives or images that are often symbolic or nonsensical.

Night's Sleep

A period of sleep taking place during the night, important for physical and mental recovery and health.