Which of the Following Statements Best Defines an Essential Amino

question 28

Multiple Choice

Which of the following statements best defines an essential amino acid?

• A) It is an amino acid that is necessary for life.
• B) It is an amino acid that is synthesized in the body.
• C) It is any of the 20 amino acids.
• D) It is another name for the nonpolar amino acids.
• E) It is an amino acid that cannot be produced by the body.

---

Definitions:

Lithium

A chemical element used as a medication to treat mood disorders such as bipolar disorder by stabilizing mood and reducing extremes in behavior.

Antidepressant Drugs

Drugs used to treat depression and anxiety.

MAO Inhibitors

A class of medications used to treat depression by inhibiting the activity of monoamine oxidase, an enzyme that breaks down neurotransmitters such as serotonin and dopamine.

Tricyclics

A class of antidepressant drugs that increase the levels of certain chemicals in the brain, helping to improve mood.