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Carbohydrates, the most abundant biomolecules on earth, are produced by:

1. some bacteria, algae and green plant cells
2. fungi, algae and green plant cells
3. all bacteria, fungi and algae
4. viruses, fungi and bacteria

Correct answer: some bacteria, algae and green plant cells

Solution

Carbohydrates are synthesized by autotrophs that capture energy and fix carbon, especially green plants and algae. Some bacteria also produce carbohydrates through photosynthesis or chemosynthesis, while fungi and viruses do not make them this way.

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