Multiple Choice
Which of the following is an electron carrier in its reduced form?
6. Chemical Quantities & Aqueous Reactions
Redox Reactions
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In redox reactions, which two types of reactions are often coupled in cells?
A
Synthesis and decomposition
B
Dehydration and hydration
C
Hydrolysis and condensation
D
Oxidation and reduction
Verified step by step guidance1
Understand that redox reactions involve the transfer of electrons between two species. The term 'redox' is a combination of 'reduction' and 'oxidation'.
Oxidation is the process where a substance loses electrons, increasing its oxidation state. Reduction is the process where a substance gains electrons, decreasing its oxidation state.
In biological systems, redox reactions are crucial for energy production and are often coupled to ensure that the energy released from one reaction can be used to drive another.
Identify that in cells, oxidation and reduction reactions are often coupled. This coupling allows for the transfer of energy through electron carriers, such as NAD+ and FAD, which are reduced and oxidized in metabolic pathways.
Recognize that the coupling of oxidation and reduction reactions is essential for processes like cellular respiration, where the oxidation of glucose is coupled with the reduction of oxygen to produce energy in the form of ATP.
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