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13 January, 06:08

Which of the following molecules are used by heterotrophs as primary sources of free energy?

A. Proteins, carbohydrates, and nucleic acids

B. Carbohydrates, lipids, and proteins

C. Nucleic acids, lipids, and carbohydrates

D. Lipids, nucleic acids, and proteins

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  1. 13 January, 06:10
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    Answer:A
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