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Rutgers Biochemistry Final Exam Study
Guide - Comprehensive Practice Exam
Exam Coverage Summary
This comprehensive exam covers all major topics in biochemistry including
biomolecular structure and function, enzyme kinetics and mechanisms, metabolic
pathways (glycolysis, TCA cycle, oxidative phosphorylation, fatty acid
metabolism), protein structure and function, nucleic acid structure and function,
gene expression and regulation, signal transduction pathways, membrane transport,
and cellular organization. The exam emphasizes understanding of fundamental
biochemical principles, pathway integration, regulation mechanisms, and the
relationship between molecular structure and biological function.
1. A compound with a molecular mass of 800 g/mol would be classified as
which type of molecule based on standard biochemical definitions?
a) Macromolecule
b) Micromolecule
c) Oligomer
, 2
d) Polymer
e) Supramolecular complex
Answer: b) Micromolecule
Macromolecules are defined as molecules with molecular masses greater
than 1,000 g/mol, so 800 g/mol falls below this threshold and is classified as
a micromolecule.
2. Which functional group is present in the compound CH3CH2NH2?
a) Alcohol
b) Ketone
c) Amine
d) Thiol
e) Aldehyde
Answer: c) Amine
The presence of the NH2 group attached to a carbon chain defines this as an
amine functional group, which is characterized by a nitrogen atom bonded
to carbon and hydrogen atoms.
3. Peroxisomes in eukaryotic cells are primarily responsible for which cellular
function?
a) Digesting macromolecules
b) Energy production through oxidative phosphorylation
, 3
c) Lipid metabolism and peroxide breakdown
d) Protein synthesis
e) Photosynthesis
Answer: c) Lipid metabolism and peroxide breakdown
Peroxisomes contain enzymes that break down fatty acids and hydrogen
peroxide, and they are not primarily involved in macromolecular digestion,
which is the function of lysosomes.
4. The molecular geometry of carbon dioxide has which bond angle?
a) 104.5°
b) 109.5°
c) 120°
d) 180°
e) 90°
Answer: d) 180°
Carbon dioxide has a linear molecular geometry with sp hybridization of the
carbon atom, resulting in a bond angle of 180° between the two oxygen
atoms.
5. Which property is NOT characteristic of carbon atoms in biological
molecules?
a) Forming ionic bonds
, 4
b) Forming cyclic structures
c) Forming multiple bonds
d) Forming bonds with oxygen
e) Bonding in long chains
Answer: a) Forming ionic bonds
Carbon predominantly forms covalent bonds in biological systems due to its
electronegativity and electron configuration, with ionic bond formation
being uncommon and not a characteristic property of carbon in
biomolecules.
6. Which element would a biochemist be LEAST likely to find in significant
quantities in living organisms?
a) Bromine
b) Calcium
c) Hydrogen
d) Sulfur
e) Sodium
Answer: a) Bromine
Bromine is a halogen that is not typically found in significant amounts in
living organisms, unlike calcium, hydrogen, sulfur, and sodium which are
essential elements for life processes.
Rutgers Biochemistry Final Exam Study
Guide - Comprehensive Practice Exam
Exam Coverage Summary
This comprehensive exam covers all major topics in biochemistry including
biomolecular structure and function, enzyme kinetics and mechanisms, metabolic
pathways (glycolysis, TCA cycle, oxidative phosphorylation, fatty acid
metabolism), protein structure and function, nucleic acid structure and function,
gene expression and regulation, signal transduction pathways, membrane transport,
and cellular organization. The exam emphasizes understanding of fundamental
biochemical principles, pathway integration, regulation mechanisms, and the
relationship between molecular structure and biological function.
1. A compound with a molecular mass of 800 g/mol would be classified as
which type of molecule based on standard biochemical definitions?
a) Macromolecule
b) Micromolecule
c) Oligomer
, 2
d) Polymer
e) Supramolecular complex
Answer: b) Micromolecule
Macromolecules are defined as molecules with molecular masses greater
than 1,000 g/mol, so 800 g/mol falls below this threshold and is classified as
a micromolecule.
2. Which functional group is present in the compound CH3CH2NH2?
a) Alcohol
b) Ketone
c) Amine
d) Thiol
e) Aldehyde
Answer: c) Amine
The presence of the NH2 group attached to a carbon chain defines this as an
amine functional group, which is characterized by a nitrogen atom bonded
to carbon and hydrogen atoms.
3. Peroxisomes in eukaryotic cells are primarily responsible for which cellular
function?
a) Digesting macromolecules
b) Energy production through oxidative phosphorylation
, 3
c) Lipid metabolism and peroxide breakdown
d) Protein synthesis
e) Photosynthesis
Answer: c) Lipid metabolism and peroxide breakdown
Peroxisomes contain enzymes that break down fatty acids and hydrogen
peroxide, and they are not primarily involved in macromolecular digestion,
which is the function of lysosomes.
4. The molecular geometry of carbon dioxide has which bond angle?
a) 104.5°
b) 109.5°
c) 120°
d) 180°
e) 90°
Answer: d) 180°
Carbon dioxide has a linear molecular geometry with sp hybridization of the
carbon atom, resulting in a bond angle of 180° between the two oxygen
atoms.
5. Which property is NOT characteristic of carbon atoms in biological
molecules?
a) Forming ionic bonds
, 4
b) Forming cyclic structures
c) Forming multiple bonds
d) Forming bonds with oxygen
e) Bonding in long chains
Answer: a) Forming ionic bonds
Carbon predominantly forms covalent bonds in biological systems due to its
electronegativity and electron configuration, with ionic bond formation
being uncommon and not a characteristic property of carbon in
biomolecules.
6. Which element would a biochemist be LEAST likely to find in significant
quantities in living organisms?
a) Bromine
b) Calcium
c) Hydrogen
d) Sulfur
e) Sodium
Answer: a) Bromine
Bromine is a halogen that is not typically found in significant amounts in
living organisms, unlike calcium, hydrogen, sulfur, and sodium which are
essential elements for life processes.
