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 viral family made up of the small (18–30 nanometers) ether-sensitive viruses that lack an envelope and have a ribonucleic acid (RNA) genome. The name is derived from "pico" meaning very small, and ...

Newcastle disease

Science; General science

A viral infection that affects the digestive, intestinal, and respiratory tracts and the neurological system of birds. The causative agent is an enveloped ribonucleic acid (RNA) virus that is ...

Tornado

Science; General science

A violently rotating, tall, narrow column of air (that is, a vortex), typically about 300 ft (100 m) in diameter, that extends to the ground from a cumulonimbus cloud. The vast majority of tornadoes ...

Intermetallic compounds

Science; General science

All metal–metal compounds, including ordered, disordered, binary, and multicomponent. The metal–metal aspect of the definition is often relaxed to include some metal–metalloid compounds such as ...

AMP-activated protein kinase (AMPK)

Science; General science

All living cells carry out many energy-requiring processes such as growth and division, movement, and uptake of nutrients from their environment. To achieve this, they utilise energy stored in the ...

Ubiquitination

Science; General science

All eukaryotic cells express a 76-amino-acid protein known as ubiquitin. This protein has the unique ability to be covalently attached onto other proteins in an enzymatic process known as ...

Cell-surface ionisation

Science; General science

All living cells suspended in aqueous salt solutions at neutral pH values possess a negative charge. The charge is due to the dissociation of ionogenic, or charged, groups (carboxyl, amino, and ...