Which Mechanism Allows Certain Viral Pathogens to Evade the Vertebrate

question 36

Multiple Choice

Which mechanism allows certain viral pathogens to evade the vertebrate immune system?

• A)becoming a symbiont
• B)becoming nonvirulent
• C)frequent changing of surface antigens
• D)becoming metabolically inactive

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Definitions:

Pain

A distressing sensory and emotional experience linked to real or possible damage to body tissue.

Retinex Theory

A theory in vision science that explains how the brain perceives colors consistently under different lighting conditions.

Color Vision

The ability of the eye and brain to perceive differences in wavelengths of light as distinct colors.

Visual Field

The entire area that can be seen when the eyes are focused on a central point, including peripheral vision.