Question

Certain hormones only affect a small number of cells in the body because...

Group of answer choices

-only target cells are exposed to the hormones.

-the hormones can cross the cell membrane of target cells.

-only target cells contain receptors specific to the hormones.

-the hormones are soluble in target cells.

-the hormones are secreted near the target cells.

Answer 1

Most suitable answer : only target cells contain receptors specific to the hormones

Statement 1. It is wrong, the hormones travel through blood and reach almost all cells

Statement 2. Statement is partially correct, but not the answer for the question. Some hormones cross the cell membrane, they are lipid soluble hormones, and attach to receptors within the cell

Statement 3. Correct option. The receptors can be present on the outside of the target cells or inside, depending on the hormone and mechanism of action.

Statement 4. Partially correct. Lipid soluble hormones can enter into target cells.

Statement 5. Not always. Most of the time the hormones are secreted far away from the target cells, hormones reach the target cells via blood circulation.