Why is it useful for a cell to move energy about as high-energy electrons rather than releasing it all at once?
AIt lets the cell work without any water
BIt lets the cell store energy as heat
CIt lets the cell use energy in small packages
DIt lets the cell avoid making any enzymes
Answer & Solution
Correct answer: C. It lets the cell use energy in small packages
1. Most of the energy stored in atoms and used to fuel cell functions sits in high-energy electrons.
2. Moving those electrons transfers energy in an incremental fashion, in small packages rather than one destructive burst.
3. Small packages let the cell take up energy step by step without damage.
4. Storing energy as heat is exactly what a cell must avoid, since excess heat destroys it.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 7 "Cellular Respiration", section 7.1 Energy in Living Systems_
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