One Way That Cells Can Increase Their Responsiveness to an External

question 12

Multiple Choice

One way that cells can increase their responsiveness to an external chemical regulator is by

• A)increasing the number of their transmembrane receptors by exocytosis.
• B)decreasing the number of their transmembrane receptors by endocytosis.
• C)uncoupling their receptors from the second message generator.
• D)increasing the number of their transmembrane receptors by endocytosis.
• E)mutating their extracellular receptors so that the affinity for the chemical regulator is reduced.

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Definitions:

Dark Adaptation

The process by which the eyes become more sensitive to light in low-light conditions.

Headlights

The front-facing lights on a vehicle, used to illuminate the road ahead during nighttime or bad weather conditions.

Amplitude

The maximum extent of a vibration or oscillation, measured from the position of equilibrium.

Brightness

A visual perception describing the perception of luminance, or the intensity of light emitted or reflected by an object.