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(WGU C624) CHEM 3501 - Biochemistry - FA Review .

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(WGU C624) CHEM 3501 - Biochemistry - FA Review .(WGU C624) CHEM 3501 - Biochemistry - FA Review .(WGU C624) CHEM 3501 - Biochemistry - FA Review .(WGU C624) CHEM 3501 - Biochemistry - FA Review .

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  • August 22, 2024
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  • 2024/2025
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ClementeO
C624 CHEM 3501




Biochemistry




FA REVIEW




©WGU 2024/2025

,1. Which of the following amino acids is classified as essential for
human nutrition?
a) Alanine
b) Glycine
c) Leucine
d) Serine
Answer : c) Leucine
Rationale : Leucine is one of the nine essential amino acids
that humans must obtain from their diet.


2. What type of bond stabilizes the tertiary structure of proteins?
a) Ionic bonds
b) Hydrogen bonds
c) Disulfide bridges
d) All of the above
Answer : d) All of the above
Rationale : Tertiary structure is stabilised by a variety of
interactions, including ionic bonds, hydrogen bonds, and disulfide
bridges.



©WGU 2024/2025

, 3. Which enzyme catalyzes the conversion of glucose to glucose-
6-phosphate?
a) Hexokinase
b) Phosphofructokinase
c) Glucose-6-phosphatase
d) Amylase
Answer : a) Hexokinase
Rationale : Hexokinase catalyzes the phosphorylation of
glucose to glucose-6-phosphate, a critical step in glycolysis.


4. Which of the following statements about enzyme kinetics is
true?
a) Vmax depends on the substrate concentration.
b) Km is the substrate concentration at which the reaction
velocity is maximum.
c) A lower Km indicates a higher affinity for the substrate.
d) Vmax is proportional to enzyme concentration only.
Answer : c) A lower Km indicates a higher affinity for the
substrate.
Rationale : Km represents the substrate concentration at which
the reaction velocity is half of Vmax, indicating affinity.



©WGU 2024/2025

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