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Both types of bacteria exist. Some are autotrophic while others are heterotrophic. Most autotrophic bacteria can synthesize their food from substances like hydrogen sulphide. This process is called chemosynthesis and involves the use of chemical substances for the production of energy. Heterotrophic bacteria, in contrast, cannot synthesize their own energy and must consume organic matter for energy. These include decomposing bacteria, or other groups of bacteria that may be symbiotic of parasitic in nature.

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15y ago

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Most bacteria are heterotrophs (like us.) Heterotrophs must get their food from another source (such as in our gut or on our skin.) Some bacteria are autotrophs, which means they make their own food from performing either photosynthesis (using the sun) or chemosynthesis (using inorganic compounds.)

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Wiki User

12y ago
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they are both

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Wiki User

15y ago
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Bacteria are heterotroph.

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Wiki User

15y ago
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heterotrophs

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Wiki User

16y ago
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y

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Unbuild u u

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autotrophic

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Anonymous

4y ago
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Q: Are bacteria autotrophs or heterotrophs
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