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

moraxella

Science; General science

A genus of bacteria that are parasites of mucous membranes. Subgenus Moraxella is characterized by gram-negative rods that are often very short and plump, frequently resembling a coccus, and ...

chlamydia

Science; General science

A genus of bacteria with a growth cycle differing from that of all other microorganisms. Chlamydiae grow only in living cells and cannot be cultured on artificial media. Although capable of ...

yew

Science; General science

A genus of evergreen trees and shrubs, Taxus , with a fruit containing a single seed surrounded by a scarlet, fleshy, cuplike envelope (aril). The leaves are flat and acicular (needle-shaped), ...

solenopora

Science; General science

A genus of extinct calcareous red algae (Rhodophyta). Solenopora is characterized by encrusting, rounded, nodular growth forms ranging in size from several millimeters to a few centimeters. ...

girvanella

Science; General science

A genus of fossil algae. Girvanella is characterized by flexuous, tubular filaments of uniform diameter, composed of thick, calcareous walls (see illus. ). External diameters average between 10 ...

A genus of fossil birds in the extinct order Archaeopterygiformes, characterized by flight feathers like those of modern birds. Archaeopteryx is generally accepted as the oldest known fossil bird. ...

helicobacter

Science; General science

A genus of gram-negative bacilli whose members are spiral shaped, showing corkscrewlike motility generated by multiple, usually polar flagella. Helicobacter require low concentrations of oxygen for ...