A Class of Molecules That Works at Very Low Concentrations

question 164

Multiple Choice

A class of molecules that works at very low concentrations in mediating hormonal activity has been studied and used to treat a variety of problems,including blood pressure,heart disease,and asthma.This group of compounds is known as the

• A)hormones.
• B)prostaglandins.
• C)amino acids.
• D)polymers.

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Definitions:

Excitement Phase

The initial stage in the human sexual response cycle, characterized by an increase in heart rate, blood pressure, and respiration, leading to sexual arousal.

Orgasm

The climax of sexual stimulation, characterized by intense pleasure and followed by relaxation.

Plateau Phase

A phase in the human sexual response cycle during which arousal is maintained at a high level before climax.

Depo-Provera

A branded form of medroxyprogesterone acetate, a hormonal contraceptive injection for women that prevents ovulation.