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Question

Which of the following is the derivative of an amino acid?

A
Epinephrine
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B
Estrogen
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C
Progesterone
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D
All of the above
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Solution

The correct option is A Epinephrine
Estrogen and Progesterone are derivatives of cholesterol.
Epinephrine also is known as adrenaline. It is a hormone that is secreted by the adrenal glands. It is derived from tyrosine, an amino acid. Epinephrine is sometimes referred to as a catecholamine as it contains the catechol moiety. This is a part of the molecule that contains the group C6H4(OH)2. Dopamine and norepinephrine are also referred to as catecholamines. They too are synthesized from tyrosine and contain the catechol moiety.

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