How Many Different Tripeptides Can Be Made from the 20

question 37

Multiple Choice

How many different tripeptides can be made from the 20 common amino acids?

• A) 60
• B) 400
• C) 8.0 × 10³
• D) 1.6 × 10⁵
• E) 3.5 × 10⁹

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Definitions:

Night Terrors

Intense episodes of fear that occur during sleep, typically in children, characterized by screaming, sweating, and confusion but little or no recall of the event upon awakening.

Nightmares

Disturbing dreams that can cause feelings of fear, terror, or anxiety, often awakening the sleeper.

Nicotine

The active ingredient in tobacco.

Stimulant

A substance that raises levels of physiological or nervous activity in the body, often used to increase alertness, attention, and energy.