Photosynthesis is the basic process used by plants to produce the energy they need to live. The process can be summarized as an endothermic reduction reaction: Water is oxidized using energy from a light source to split into oxygen and hydrogen ions. The hydrogen ions reduce carbon dioxide, decreasing the oxidation state of the carbon dioxide so that the hydrogen and carbon dioxide combine. This produces simple sugar. In the context of this process, "reduction reaction" refers to a reaction that does what?

Photosynthesis is the basic process used by plants to produc

Photosynthesis is the basic process used by plants to produc - GED Prep

Question

Photosynthesis is the basic process used by plants to produce the energy they need to live. The process can be summarized as an endothermic reduction reaction:

Water is oxidized using energy from a light source to split into oxygen and hydrogen ions.
The hydrogen ions reduce carbon dioxide, decreasing the oxidation state of the carbon dioxide so that the hydrogen and carbon dioxide combine. This produces simple sugar.

In the context of this process, "reduction reaction" refers to a reaction that does what?

Answers

Lessens the amount of the reactants
Makes the reactants smaller
correct

Lowers the oxidation state of one or more reactants
Makes the molecular reactants simpler

Explanation

In chemistry, a reduction reaction involves the decrease in the oxidation state of an atom or molecule. In photosynthesis, carbon dioxide (CO2) is reduced when it gains electrons from hydrogen ions, lowering its oxidation state. This process transforms CO2 into simple sugars, such as glucose. The term "reduction" doesn't refer to a decrease in quantity or size of reactants, nor does it make molecules simpler. Instead, it specifically describes the electron transfer that results in a lower oxidation state for the carbon atoms in CO2.

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