UNIVERSITY EXAMINATION
Graduate Management Admission Test (GMAT)
Official Practice Examination
Course: Molecular Biology Exam 1
FINAL EXAMINATION MAY -2026
Duration: 3 Hours
Instructions:
Answer ALL questions in Section A.
Answer ANY THREE questions in Section B.
Support your answers with relevant scientific examples and diagrams where necessary.
SECTION A — SHORT ANSWER QUESTIONS (40 Marks)
Question 1 (5 Marks)
Define the following terms:
1
Page
, a) Gene
b) Chromosome
c) Mutation
d) Nucleotide
e) Genome
Answers
a) A gene is a segment of DNA that codes for a specific protein or trait.
b) A chromosome is a thread-like structure made of DNA and proteins that carries genetic
information.
c) A mutation is a permanent change in the nucleotide sequence of DNA.
d) A nucleotide is the basic unit of nucleic acids consisting of a sugar, phosphate group, and
nitrogenous base.
e) A genome is the complete set of genetic material in an organism.
Question 2 (5 Marks)
State five differences between DNA and RNA.
Answer
2
DNA RNA
Page
Graduate Management Admission Test (GMAT)
Official Practice Examination
Course: Molecular Biology Exam 1
FINAL EXAMINATION MAY -2026
Duration: 3 Hours
Instructions:
Answer ALL questions in Section A.
Answer ANY THREE questions in Section B.
Support your answers with relevant scientific examples and diagrams where necessary.
SECTION A — SHORT ANSWER QUESTIONS (40 Marks)
Question 1 (5 Marks)
Define the following terms:
1
Page
, a) Gene
b) Chromosome
c) Mutation
d) Nucleotide
e) Genome
Answers
a) A gene is a segment of DNA that codes for a specific protein or trait.
b) A chromosome is a thread-like structure made of DNA and proteins that carries genetic
information.
c) A mutation is a permanent change in the nucleotide sequence of DNA.
d) A nucleotide is the basic unit of nucleic acids consisting of a sugar, phosphate group, and
nitrogenous base.
e) A genome is the complete set of genetic material in an organism.
Question 2 (5 Marks)
State five differences between DNA and RNA.
Answer
2
DNA RNA
Page
