In the Cyclic AMP Second Messenger System, Binding of the First

question 321

Multiple Choice

In the cyclic AMP second messenger system, binding of the first messenger to a surface receptor leads to activation of adenylate cyclase, which induces the conversion of which of the following to cyclic AMP

• A)intracellular ATP
• B)intracellular ADP
• C)extracellular ATP
• D)extracellular ADP

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Definitions:

Ciliary Muscle

A ring-shaped muscle in the eye that changes the shape of the lens to focus on near or distant objects.

Visual Accommodation

Process of making adjustments to lens shape so light from an object falls on the retina.

Lens

A piece of glass or other transparent material shaped to converge or diverge transmitted light and form an image.

Human Skin

The body’s outer covering, which protects against heat, sunlight, injury, and infection while regulating body temperature and storing water, fat, and vitamin D.