(a) in terms of oxidation/reduction what is the difference/similarity between ph
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Question
(a) in terms of oxidation/reduction what is the difference/similarity between photosynthesis and metabolism? (b) what is the relationship between the reduced form of an atom and the oxidized form of an atom relative to its stored energy content? (a) in terms of oxidation/reduction what is the difference/similarity between photosynthesis and metabolism? (b) what is the relationship between the reduced form of an atom and the oxidized form of an atom relative to its stored energy content? (b) what is the relationship between the reduced form of an atom and the oxidized form of an atom relative to its stored energy content?Explanation / Answer
a.
Oxidation:
Loss of electrons
Loss of hydrogen
Gain of oxygen
An increase in oxidation number
Reduction:
Gain of electrons
Gain of hydrogen
Loss of oxygen
A decrease in oxidation number
Photosynthesis is an anabolic pathway. It involves the reduction of CO2 driven by energy derived from the sunlight.
6CO2 + 6H2O ---------> C6H12O6 + 6O2
Light reactions of photosynthesis produce ATP and NADPH which are utilized in the dark reactions to reduce CO2 to carbohydrate.
b.
The reduced form of a molecule contains more energy compared to its oxidative form.
NAD+ = Oxidized form
NADH = Reduced form
FAD = Oxidized form
FADH2 = Reduced form
NADH and FADH2 are reducing equivalents that serve as electron carriers. They enter ETC and donate electrons to molecular oxygen and get oxidized.
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