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SubjectsMicrobiologyMicrobiology & Infection ControlChapter 1 — Microorganisms1.1 Bacteria

Topic 1.1 · Microbiology · Microorganisms

Bacteria

Bacteria are single-celled prokaryotes.

They are classified by shape (cocci, bacilli, spirilla) and Gram staining.

Important Facts

Bacterial shapes: Cocci, bacilli, spirilla
Gram stain: Positive & negative

Key Points

Gram-positive vs Gram-negative guides antibiotics
Bacteria reproduce by binary fission

Important Names

Louis PasteurRobert Koch

Important Dates

1882	Koch identifies the TB bacillus

Exam-Oriented Notes

»Gram staining: crystal violet + safranin

Related topics

1.2 Viruses, Fungi & Protozoa 1.3 Immunity

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