Question

Of the following examples, which best represents the below listed hormones:

(1) Epinephrine, norepinephrine, dopamine

(2) Estrogen, Androgen, Cortisol

(3) Thyroxine (T4)

(4) Insulin, parathyroid hormone

-Peptide Hormones
-Steroid Hormones
-Catecholamines
-Thyroid Hormones

Answer 1

Each example of hormones provided corresponds to a specific class: (1) Epinephrine, norepinephrine, dopamine are catecholamines, (2) Estrogen, androgen, cortisol are steroid hormones, (3) Thyroxine (T4) is a thyroid hormone, and (4) Insulin, parathyroid hormone are peptide hormones.

Step-by-step explanation:

Classification of Hormones

To determine which examples best represent the listed hormones, it's essential to understand the four classes of hormones:

• Peptide hormones include those from the hypothalamus, pituitary, and gastrointestinal mucosa, such as insulin and parathyroid hormone.
• Steroid hormones include hormones from the adrenal cortex and gonads, such as estrogen, androgens, and cortisol.
• Catecholamines are derived from the amino acid tyrosine and include epinephrine, norepinephrine, and dopamine, which are involved in the fight-or-flight response and other regulatory functions.
• Thyroid hormones, like thyroxine (T4), are involved in metabolic regulation.

Corresponding to the examples given with each hormone class:

1. Epinephrine, norepinephrine, dopamine - Catecholamines
2. Estrogen, Androgen, Cortisol - Steroid Hormones
3. Thyroxine (T4) - Thyroid Hormones
4. Insulin, parathyroid hormone - Peptide Hormones