When is energy available for cell processes?

Cells do not use the energy from oxidation reactions as soon as it is released. Instead, they convert it into small, energy-rich molecules such as ATP and nicotinamide adenine dinucleotide (NADH), which can be used throughout the cell to power metabolism and construct new cellular components.

Explanation:

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a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.