A substance that decreases the secretion of another substance, such as a hormone.

A substance that slows down or stops a chemical reaction or biological process.

The scientific name for the Amazon river dolphin, also known as the boto.

The first codon of a messenger RNA transcript that is translated by a ribosome, typically AUG.

Behavior that is genetically hardwired and does not require learning or experience.

To introduce microorganisms or vaccines into a medium or organism to produce immunity or growth.

The branch of chemistry dealing with inorganic compounds, typically those that do not contain carbon-hydrogen bonds.

A type of insect development that lacks a pupal stage; juveniles resemble miniature adults.

A protein that lacks one or more essential amino acids required by the human body.

To keep eggs, cells, or organisms at an optimal temperature for development.