Chemotrophs can be differentiated by the different compounds they derive their energy from. Some types of chemotrophs include:

- Organotrophs
- Lithotrophs

Types of Chemotrophs

An organism that gets their energy for electron transfer from breaking chemical bonds, as suggested by the prefix chemo- ("chemical").

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Organisms can be classified by the energy sources they use. Some such examples include:

- Phototrophs
- Chemotrophs

Organism Classification by Energy Source

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An organism that gets their energy for electron transfer from light, as suggested by the prefix photo- ("light"). 

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