(physics, biology) The study of the effect of ionizing and nonionizing radiation on biological systems.

(biochemistry) A sulfur-containing member of the vitamin B complex, 5-[(3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl]pentanoic acid, found in liver, egg yolk, milk, and yeast, essential to the activity of multiple enzyme systems.

(biology) Any of various biological sciences that deal with living things in a space environment

(biology) A branch of biology that studies the interaction of evolutionary and developmental processes.

Capable of being decomposed by biological activity, especially by microorganisms.

Any material that can be decomposed by biological activity.

A chemist whose speciality is biochemistry

The application of biology and physiology to clinical medicine. / The branch of medicine that studies the effects of environmental stress on organisms (most often in space travel).

A biological pathogen or toxin designed or used for warfare.

Any of several sciences that deal with living organisms