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# The source of energy in a cellular reaction is

(a) chemical energy
(b) light energy
(c) heat energy
(d) solar radiation

## 2 Answers

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Answer: chemical energy
Cellular reaction mainly refers to metabolism which is essentially bond making and bond breaking and chemical energy is the source that fuels such reactions.

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Solution :
Cellular reaction mainly refers to metabolism which is essentially bond making and bond breaking and chemical energy is the source that fuels such reactions.