AP BIOLOGY

Detailed explanation-1: -Answer and Explanation: Insulin signaling is an example of endocrine signaling. Insulin signaling is an important form of cell signaling for the maintenance of homeostatic blood sugar levels.

Detailed explanation-2: -In endocrine signaling, the signaling molecules (hormones) are secreted by specialized endocrine cells and carried through the circulation to act on target cells at distant body sites.

Detailed explanation-3: -Endocrine signaling is an example of long distance communication between hormone producing cells, tissues and glands and cells that express hormone receptor molecules.

Detailed explanation-4: -There are four basic categories of chemical signaling found in multicellular organisms: paracrine signaling, autocrine signaling, endocrine signaling, and signaling by direct contact.