BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Neuropeptide, a protein sequence which acts as a hormone or neurotransmitter.

Detailed explanation-2: -Hormones are chemical substances that act like messenger molecules in the body. After being made in one part of the body, they travel to other parts of the body where they help control how cells and organs do their work. For example, insulin is a hormone that’s made by the beta cells in the pancreas.

Detailed explanation-3: -There are four categories of chemical signaling found in multicellular organisms: paracrine signaling, endocrine signaling, autocrine signaling, and direct signaling across gap junctions (Figure 44.1.

Detailed explanation-4: -Hormones are your body’s chemical messengers. They travel in your bloodstream to tissues or organs. They work slowly, over time, and affect many different processes, including: Growth and development.