alleryStart learning →What is meant by a reduction reaction?
AThe loss of electrons by an atom or molecule
BThe loss of a phosphate from a molecule
CThe gain of a carbon atom by a molecule
DThe gain of electrons by an atom or molecule
Answer & Solution
Correct answer: D. The gain of electrons by an atom or molecule
1. A reduction is the gain of electrons by an atom or molecule.
2. Converting 3-PGA into glyceraldehyde 3-phosphate is a reduction reaction on that definition.
3. It qualifies because it involves the gain of electrons by 3-PGA.
4. Losing electrons is oxidation, which is the paired opposite reaction.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 8 "Photosynthesis", section 8.3 Using Light Energy to Make Organic Molecules_
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