Chemoheterotrophs get their energy from preformed organic energy sources

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Lipids

Carbohydrates

Proteins

All of the above

answer is D.

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Detailed Solution

Concept:Any organism that requires organic substances as a carbon source for the synthesis of its own cellular components is a heterotroph. The primary distinction between chemoorganotrophs and chemolithotrophs is that the former derive their electron sources from organic substances, whereas the latter do so from inorganic ones. Organisms can be categorised as photoheterotrophs or chemoorganotrophs depending on where they get their energy from.
Hence, option 4 is the correct answer.

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