Question

exam lesson name: the human body
exam number: 700946rr
▶ exam guidelines
▶ exam instructions
question 10 of 20 :
select the best answer for the question.

1. which of the following correctly compares steroid and nonsteroid hormones

○ a. neither steroid nor nonsteroid hormones enter the cell membrane.
○ b. nonsteroid hormones enter the nucleus and affect protein synthesis while steroidal hormones do not.
○ c. steroid hormones bind to receptors on the outside of the cell and rely on secondary messengers while nonsteroidal hormones do not.
○ d. steroid hormones enter the nucleus and affect protein synthesis, while nonsteroidal hormones do not.
□ mark for review (will be highlighted on the review page)

Explanation:

To solve this, we analyze each option:

• Option A: Steroid hormones can enter the cell membrane (they are lipid - soluble), so A is wrong.
• Option B: Non - steroid hormones (water - soluble) bind to receptors on the cell surface and use secondary messengers. They do not enter the nucleus to affect protein synthesis. Steroid hormones do enter the nucleus. So B is wrong.
• Option C: Steroid hormones enter the cell (and nucleus) as they are lipid - soluble and can pass through the cell membrane. Non - steroid hormones bind to cell - surface receptors and use secondary messengers. So C has the two types reversed and is wrong.
• Option D: Steroid hormones are lipid - soluble, so they can enter the nucleus and affect protein synthesis. Non - steroid hormones are water - soluble, bind to cell - surface receptors, and do not enter the nucleus to affect protein synthesis. This matches the correct understanding of steroid and non - steroid hormone action.

Answer:

D. Steroid hormones enter the nucleus and affect protein synthesis, while nonsteroidal hormones do not.