Multiple Choice
The building blocks of nucleic acids are monomers called:
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1. Introduction to Biochemistry
Nucleic Acids
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Which form of the electron carrier FAD has the higher amount of energy?
A
FADH\(_2\)
B
FAD\(^+\)
C
FAD
D
FADH
Verified step by step guidance1
Understand the role of FAD (Flavin Adenine Dinucleotide) in biochemical reactions. FAD is an electron carrier that participates in redox reactions, cycling between oxidized and reduced forms.
Recognize the different forms of FAD mentioned in the problem: FAD\(^+\) (oxidized form), FAD (neutral form), FADH (partially reduced form), and FADH\(_2\) (fully reduced form).
Recall that the energy content of an electron carrier is related to its ability to donate electrons. The reduced forms (FADH and FADH\(_2\)) have higher energy because they carry additional electrons compared to the oxidized forms.
Compare the forms: FADH\(_2\) is the fully reduced form, meaning it has gained two electrons and two protons, making it the highest-energy form among the options provided.
Conclude that FADH\(_2\) has the highest amount of energy because it is the most reduced state, capable of donating electrons in subsequent biochemical reactions.
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