Biology for IGCSE & O level - Coordination And Response (Section 2 - No. 21)

What is the relationship between a hormone and its target cells?

Hormones only affect cells in the endocrine glands.

Hormones affect all cells in the body equally.

Hormones affect only cells with specific receptors for that hormone.

Hormones are only produced by target cells.

Hormones only affect cells with receptors that bind to the hormone.