Icosahedron is a solid formed of 20 triangular faces and 12 corners; the geometrical shape of many virions.
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Pilus means any filamentous appendage other than flagella on certain Gram-negative bacteria.
Polypeptide is a molecule consisting of many joined amino acids.
- Gametangium, pl. gametangia
Gametangium, pl. gametangia is sex organelle of fungi.
- Cytokine sis
Cytokine sis is the division of the cytoplasm following nuclear division.
Siderophores means iron-binding compounds formed by microorganisms.
- Nitrogen fixation
Nitrogen fixation is the formation of ammonia from free atmospheric nitrogen.
Autolysis is the disintegration of cells by the action of their own enzymes.