Question

question 14 (1 point)
which statement is incorrect?
steroid hormones are hydrophobic.
protein hormones are made from amino acids.
steroid hormones are made from cholesterol.
protein hormones diffuse through the target cell membrane.
question 15 (1 point)
from which structure is thyroid - stimulating hormone produced and released?
anterior pituitary gland
posterior pituitary gland
thyroid gland
hypothalamus
thymus gland
question 16 (1 point)
the adrenal medulla secretes which of the following?
epinephrine
cortisol
estrogen
aldosterone

Explanation:

Question 14

• Steroid hormones are hydrophobic (lipid - based).
• Protein hormones are made from amino acids.
• Steroid hormones are made from cholesterol.
• Protein hormones are hydrophilic and cannot diffuse through the non - polar cell membrane; they bind to cell - surface receptors.

• Thyroid - stimulating hormone (TSH) is produced and released by the anterior pituitary gland.
• The posterior pituitary gland releases hormones like oxytocin and antidiuretic hormone.
• The thyroid gland produces thyroid hormones (T3 and T4).
• The hypothalamus produces releasing and inhibiting hormones that regulate the anterior pituitary.
• The thymus gland is involved in T - cell maturation.

• The adrenal medulla secretes epinephrine (adrenaline) and norepinephrine (nor - adrenaline) in response to stress.
• Cortisol is secreted by the adrenal cortex.
• Estrogen is mainly produced by the ovaries (in females) and testes (in males to a lesser extent).
• Aldosterone is also secreted by the adrenal cortex.

Answer:

Protein hormones diffuse through the target cell membrane.

Question 15