Size, Shape and Arrangement

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Presentation transcript:

Size, Shape and Arrangement Prokaryotes: the smallest of all organisms range from 0.5 – 2.0 µm in diameter and from 1.0 – 60 µm in length

THE MOST COMMON BACTERIAL SHAPES

Arrangements of Bacteria Cocci in pairs (diplococci): Neisseria sp. Cocci in chains (streptococci): Streptococcus sp. Rods in chains: Lactobacillus sp. Cocci in clusters: Staphylococcus sp.

Neisseria (22,578X)

Streptococcus (9605X)

Merisopedia (100X)

Sarcinia lutea (16,000X)

Predict what would happen if division happened along any plane of the cell, randomly?

Staphylococcus (5,400X)

Predict what would happen if division happened in one plane of bacilli cells?

Bacillus megaterum (10,000X)