Colour and types of bacteria

Question

Accepted Answer

Bacteria can come in various colors and types, indicating their characteristics and potential impact on health and environment.

Bacteria can be classified based on their shape, such as cocci (spherical), bacilli (rod-shaped), and spirilla (spiral-shaped).
Different types of bacteria can have distinct colors, such as Gram-positive bacteria appearing purple or blue after staining, while Gram-negative bacteria appear pink or red.
Some bacteria produce pigments that give them unique colors, like Pseudomonas aeruginosa which produces a green pigment called pyocyanin.
Color changes in bacterial colonies on agar plates can also indicate specific characteristics, such as E. coli colonies appearing metallic green on EMB agar.
Identifying the color and type of bacteria is crucial in determining their potential pathogenicity and appropriate control measures in quality control.

Accepted Answer

Staphylococcus aureus is yellow colour

Bacilli rod shape

Streptococci oval shape

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