T Cells

question 66

Multiple Choice

T cells

• A)bind with free extracellular antigen
• B)bind with MHC molecules only when they are in association with a foreign antigen
• C)are responsible for cell-mediated immunity
• D)have characteristics a and c
• E)have characteristics b and c

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Definitions:

Lens

A curved piece of glass or other transparent materials used to refract light, focus images, and aid vision or in photography.

Feature Detectors

Neurons in the brain that respond only to specific visual patterns (for example, to lines or angles).

Visual Systems

The parts of the brain and the eyes that work together to process visual information, enabling sight.

Neurons

Nerve cells that transmit information through electrical and chemical signals in the brain and nervous system.