Which of the following is NOT classified as a type of hormone?

Starch is not classified as a type of hormone because it is a complex carbohydrate, primarily made up of glucose molecules and serves as a source of energy in plants and animals. In contrast, hormones are signaling molecules that regulate physiological processes in the body, and they can be classified into different categories based on their structure.

Peptide hormones are made up of short chains of amino acids, while protein hormones consist of longer chains or complete proteins. Amine hormones are derived from amino acids, particularly tyrosine or tryptophan, and include well-known hormones such as adrenaline and thyroid hormones.

The distinction lies in the functional roles these biomolecules play in the body: hormones facilitate communication and regulation of various biological functions, while starch is primarily involved in energy storage and supply.