BIOC 384 FINAL 2024/2025 Exam
Questions Marking Scheme New Update
| A+ Rated
The study of biochemistry attempts to explain
Question 1 options:
A. chemical processes at the atomic level.
B.biological processes at the molecular and cellular level.
C.the nature of life.
D.physical processes at the macromolecular level. - 🧠ANSWER
✔✔B.biological processes at the molecular and cellular level.
The __________ differentiates amino acids from one another.
Question 2 options:
A. number of silane groups
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
1
STATEMENT. ALL RIGHTS RESERVED
,B. number of phosphoryl groups
C. side chains attached to the central carbon
D. number of hydroxyl groups - 🧠ANSWER ✔✔C. side chains attached to
the central carbon
If the concentration of aspartate in the cell decreased, what would be the
predicted outcome?
A. increased concentration of argininosuccinate
B. decreased concentration of citrulline
C. decreased concentration of fumarate
D. increased concentration of arginine - 🧠ANSWER ✔✔C. decreased
concentration of fumarate
Plasmids are small, circular DNA molecules that are used in which of the
following?
A. gene cloning
B. production of chromatin
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
2
STATEMENT. ALL RIGHTS RESERVED
,C. cell movement
D. replication of nucleus - 🧠ANSWER ✔✔A. gene cloning
A hydrogen bond can best be described as a
A. strong covalent interaction.
B. strong ionic interaction.
C. weak noncovalent interaction.
D. weak covalent interaction. - 🧠ANSWER ✔✔C. weak noncovalent
interaction.
Bioinformatics shows that 98% of human DNA is identical to that of
chimpanzees. If human DNA contains 3.2 billion nucleotides, how many
nucleotides are different between the two species?
A. 3.1 billion
B. 64 million
C. 3.1 million
D. 640 million - 🧠ANSWER ✔✔B. 64 million
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
3
STATEMENT. ALL RIGHTS RESERVED
, Highly conserved gene sequences that encode proteins with the same
function in different organisms are called __________ genes.
A. orthologous
B. conserved
C. parallel
D. antiparallel - 🧠ANSWER ✔✔A. orthologous
In DNA the phosphate groups are on the outside of the helix. Why does this
stabilize the structure?
A. ionic interactions with the solvent
B. hydrogen bonding with itself
C. ovalent binding to the solvent
D. It does not stabilize the structure. - 🧠ANSWER ✔✔A. ionic interactions
with the solvent
What is the cause of the overall negative charge of a molecule of DNA?
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
4
STATEMENT. ALL RIGHTS RESERVED
Questions Marking Scheme New Update
| A+ Rated
The study of biochemistry attempts to explain
Question 1 options:
A. chemical processes at the atomic level.
B.biological processes at the molecular and cellular level.
C.the nature of life.
D.physical processes at the macromolecular level. - 🧠ANSWER
✔✔B.biological processes at the molecular and cellular level.
The __________ differentiates amino acids from one another.
Question 2 options:
A. number of silane groups
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
1
STATEMENT. ALL RIGHTS RESERVED
,B. number of phosphoryl groups
C. side chains attached to the central carbon
D. number of hydroxyl groups - 🧠ANSWER ✔✔C. side chains attached to
the central carbon
If the concentration of aspartate in the cell decreased, what would be the
predicted outcome?
A. increased concentration of argininosuccinate
B. decreased concentration of citrulline
C. decreased concentration of fumarate
D. increased concentration of arginine - 🧠ANSWER ✔✔C. decreased
concentration of fumarate
Plasmids are small, circular DNA molecules that are used in which of the
following?
A. gene cloning
B. production of chromatin
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
2
STATEMENT. ALL RIGHTS RESERVED
,C. cell movement
D. replication of nucleus - 🧠ANSWER ✔✔A. gene cloning
A hydrogen bond can best be described as a
A. strong covalent interaction.
B. strong ionic interaction.
C. weak noncovalent interaction.
D. weak covalent interaction. - 🧠ANSWER ✔✔C. weak noncovalent
interaction.
Bioinformatics shows that 98% of human DNA is identical to that of
chimpanzees. If human DNA contains 3.2 billion nucleotides, how many
nucleotides are different between the two species?
A. 3.1 billion
B. 64 million
C. 3.1 million
D. 640 million - 🧠ANSWER ✔✔B. 64 million
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
3
STATEMENT. ALL RIGHTS RESERVED
, Highly conserved gene sequences that encode proteins with the same
function in different organisms are called __________ genes.
A. orthologous
B. conserved
C. parallel
D. antiparallel - 🧠ANSWER ✔✔A. orthologous
In DNA the phosphate groups are on the outside of the helix. Why does this
stabilize the structure?
A. ionic interactions with the solvent
B. hydrogen bonding with itself
C. ovalent binding to the solvent
D. It does not stabilize the structure. - 🧠ANSWER ✔✔A. ionic interactions
with the solvent
What is the cause of the overall negative charge of a molecule of DNA?
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
4
STATEMENT. ALL RIGHTS RESERVED
