General science

General science

A variety of science subjects concerning the fundamental knowledge about different aspects of our world and their underlying principles.

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General science

A carnivore classified in the family Mustelidae along with martens and fishers. The sable ( Martes zibellina ) has a very slender, long, and supple body (see illustration ). Coloration varies but is ...

skunk

Science; General science

A carnivore long classified in the subfamily Mephitinae in the family Mustelidae (otters, weasels, mink, badgers, and their relatives), but since 1997 placed in the independent family Mephitidae ...

badger

Science; General science

A carnivorous mammal in the family Mustelidae along with weasels and otters. Badgers originated in Asia and are currently found from Ireland to Japan and the Philippine Islands as well as in North ...

enzyme

Science; General science

A catalytic protein produced by living cells. The chemical reactions involved in the digestion of foods, the biosynthesis of macromolecules, the controlled release and utilization of chemical ...

hydrocracking

Science; General science

A catalytic, high-pressure process flexible enough to produce either of the two major light fuels—high octane gasoline or aviation jet fuel. It proceeds by two main reactions: adding hydrogen to ...

dopamine

Science; General science

A catecholamine neurotransmitter that is synthesized by certain neurons in the brain and interacts with specific receptor sites on target neurons.

picture tube

Science; General science

A cathode-ray tube, or CRT, used as a television display. A cathode-ray tube has an electron gun, electromagnetic deflection yoke, shadow mask or grill assembly, and a phosphor screen that is the ...