Is a hormone a chemical

Answer 1

A hormone (from Greek ὁρμή - "impetus") is a chemical released by one or more cells that affects cells in other parts of the organism. Only a small amount of hormone is required to alter cell metabolism. It is essentially a chemical messenger that transports a signal from one cell to another. All multicellular organisms produce hormones; plant hormones are also called phytohormones. Hormones in animals are often transported in the blood. Cells respond to a hormone when they express a specific receptor for that hormone. The hormone binds to the receptor protein, resulting in the activation of a signal transduction mechanism that ultimately leads to cell type-specific responses.

Endocrine hormone molecules are secreted (released) directly into the bloodstream, while exocrine hormones (or ectohormones) are secreted directly into a duct, and from the duct they either flow into the bloodstream or they flow from cell to cell by diffusion in a process known as paracrine signalling.

Answer 2

This depends on what you consider to be a chemical.

Absolutley everything in this world is made up of chemical elements. These chemical elements are combined into clusters of elements called molecules.

Hormones are molecules. Just as salt, sugar and water are molecules, and all made up from chemical elements.

Answer 3

All hormones are amino acid - based or steroids

Answer 4

Impossible question to give a good answer