Bacteriophage

Definition

A bacteriophage, also known informally as a phage, is a virus that infects and replicates within bacteria. The term is derived from Ancient Greek φαγεῖν (phagein) 'to devour' and bacteria. Bacteriophages are composed of proteins that encapsulate a DNA or RNA genome, and may have structures that are either simple or elaborate. Their genomes may encode as few as four genes and as many as hundreds of genes. Phages replicate within the bacterium following the injection of their genome into its cytoplasm.

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Ecological niche Ecological pyramid Ecological resilience Ecological stability Ecological stoichiometry Ecological succession Ecological threshold Ecological trap Ecological yield Ecology Ecology of the San Francisco Estuary Ecopath Ecosystem Ecosystem based fisheries Ecosystem diversity Ecosystem ecology Ecosystem engineer Ecosystem model Ecotone Ecotype Edge effects Effective population size Efunaviria Electron micrograph Emergence Endemism Endogenous Endolith Endolysin Endotoxin Energy flow (ecology)Energy quality Energy systems language Enterobacteria phage P2 Enterobacteria phage T4 Environmental humanities Enzyme Ernest Hanbury Hankin Escherichia coli Escherichia virus 186 Escherichia virus T4 Evolution Evolutionary ecology Extinction debt F-ratio (oceanography)Feed conversion ratio Feeding frenzy Filamentous phage Flagella Flagship species Food chain Food web Foraging Foster's rule Foundation species Frederick Twort French-Canadian Functional ecology Félix d'Hérelle G4 phage 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