1.In the following, what kind of chemical reaction is shown? R-CHO + H2O + NAD+
ID: 218860 • Letter: 1
Question
1.In the following, what kind of chemical reaction is shown?
R-CHO + H2O + NAD+ ® R-COOH + NADH + H+
deamination
hydrolysis
dehydration synthesis (condensation)
neutralization
oxidation/reduction
2. During photosynthesis, water molecules are split according to the following reaction:
H2O + NADP+ ® NADPH + H+ + O2
In the reaction, which substance undergoes reduction?
the hydrogen ions (protons)
the NADPH
the oxygen that is released
the NADP+
the water molecules
3.All but one of the following are examples of oxidizing reactions. Which one is not an oxidizing reaction.
the synthesis of glucose in a plant
the breakdown of glucose in a cell
the rusting of a nail
a log burning in a fireplace
a newspaper turning yellow as it ages
deamination
hydrolysis
dehydration synthesis (condensation)
neutralization
oxidation/reduction
Explanation / Answer
1) In the following, what kind of chemical reaction is shown?
R-CHO + H2O + NAD+ ® R-COOH + NADH + H+
E) Oxidation/reduction
2) During photosynthesis, water molecules are split according to the following reaction:
H2O + NADP+ ® NADPH + H+ + O2
In the reaction, which substance undergoes reduction?
D) The NADP+
3) All but one of the following are examples of oxidizing reactions. Which one is not an oxidizing reaction.
A) The synthesis of glucose in a plant
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