Types of Bacteria

BY Team Aakash Byju's

Bacteria: Microorganisms not able to be seen except under a microscope, found in rotten food, in air, water, soil, inside and outside of living organisms.

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Bacteria are grouped into four types based on their shapes. They include: coccus, bacillus, vibrio and spirilla.

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Coccus: These are round shaped bacteria.

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Bacillus: These are rod-shaped bacteria.

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Vibrio: These are comma-shaped bacteria.

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Spirilla: These are spiral-shaped bacteria.

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Bacteria are grouped into Autotrophic and Heterotrophic based on Nutrition.

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Autotrophic Bacteria: Bacteria that can manufacture their food.

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Heterotrophic Bacteria: Bacteria that obtain food from other organisms.

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Bacteria are categorised into Aerobic and Anaerobic based on the requirement of Oxygen.

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Aerobic Bacteria: These bacteria can survive in the presence of Oxygen.

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Anaerobic Bacteria: These bacteria can survive in the absence of Oxygen.

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Bacteria are divided into Gram-Positives and Negatives based on the cell wall.

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Gram-Positive Bacteria: These bacteria have a thick peptidoglycan layer.

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Gram-Negative Bacteria: These bacteria have a lipopolysaccharide layer.

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