Question

Q . what is bacteria ?​

Answer 1

Bacteria

• Bacteria are unicellular prokaryotic microorganisms.
• Some bacteria are useful for humans while some can be harmful.
• They are of four major types: Bacillus, Vibrio, Cocci and Spirilla.

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Answer 2

Answer:

Bacteria are a type of biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a number of shapes, ranging from spheres to rods and spirals. Bacteria were among the first life forms to appear on Earth, and are present in most of its habitats.

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