Which of the Following Statements Is a Good Explanation for the Observation

question 16

Multiple Choice

Which of the following statements is a good explanation for the observation that many different rhinovirus strains can all use the same host cell receptor?

• A) The receptor binding site is buried at the base of a narrow canyon on the viral capsid which is inaccessible to antibody proteins.
• B) The recptor binding site is the most exposed area of the capsid which is highly accessible to antibody proteins.
• C) The amino acid sequence of the canyon region of the capsid is highly variable.
• D) The amino acid sequence on the antibody exposed surfaces of the capsid is highly variable.
• E) The amino acid sequence on the exposed areas of the capsid are highly conserved in each strain.

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Definitions:

Granite

Granite is a coarse-grained igneous rock composed mainly of quartz, feldspar, and mica, widely used in construction due to its durability.

Volcanic Neck

A vertical column of volcanic rock, formed by magma solidifying in the vent of an inactive volcano.

Igneous Feature

A geological structure formed from hardened lava or magma, such as a volcano or granite intrusion.

Dike

A sheetlike intrusion that cuts across any layers in a host rock, commonly formed with a steep orientation.