NANP Board Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

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What is produced from the amino acid tyrosine in response to stress?

Cortisol

Epinephrine

The correct response identifies epinephrine as the substance produced from the amino acid tyrosine in reaction to stress. Tyrosine is a precursor for the synthesis of several important neurotransmitters and hormones, including epinephrine (also known as adrenaline). During stressful situations, the body increases the production of epinephrine, which plays a crucial role in the "fight or flight" response by preparing the body to react to perceived threats.

Cortisol, while also a stress-related hormone, is derived from cholesterol and not from tyrosine. Insulin and glucagon are hormones involved in glucose metabolism and energy regulation, stemming from the pancreas rather than stress response mechanisms linked to tyrosine. Thus, the connection between tyrosine and the production of epinephrine highlights its significance in the body's response to stress.

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Insulin

Glucagon

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