POST UTME MOUNTAIN TOP UNIVERSITY 2025 Biology | Objective

Are you preparing for POST UTME MOUNTAIN TOP UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2025 Biology (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1
A 30-year-old man presents with a 2-year history of progressive hearing loss, tinnitus, and vertigo. His audiogram shows a sensorineural hearing loss with a flat audiogram. Which of the following is the most likely diagnosis?
A. Ménière's disease
Correct B. Acoustic neuroma
C. Otosclerosis
D. Presbycusis

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 2
A 25-year-old woman presents with a 5-year history of progressive muscle weakness, fatigue, and shortness of breath. Her electromyogram shows a myopathic pattern. Which of the following is the most likely diagnosis?
Correct A. Duchenne muscular dystrophy
B. Becker muscular dystrophy
C. Myotonic dystrophy
D. Friedreich's ataxia

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 3
A 35-year-old man presents with a 10-year history of progressive cognitive decline, memory loss, and personality changes. His MRI scan shows a significant atrophy of the temporal lobe. Which of the following is the most likely diagnosis?
Correct A. Alzheimer's disease
B. Frontotemporal dementia
C. Huntington's disease
D. Parkinson's disease

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 4
A 28-year-old woman presents with a 2-year history of progressive visual loss, double vision, and ptosis. Her visual field test shows a significant loss of peripheral vision. Which of the following is the most likely diagnosis?
A. Optic neuritis
B. Optic atrophy
C. Papilledema
Correct D. Graves' disease

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 5
A 32-year-old man presents with a 5-year history of progressive muscle weakness, fatigue, and shortness of breath. His electromyogram shows a myopathic pattern. Which of the following is the most likely diagnosis?
A. Duchenne muscular dystrophy
Correct B. Becker muscular dystrophy
C. Myotonic dystrophy
D. Friedreich's ataxia

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 6
In a eukaryotic cell, the process of photosynthesis occurs in the
A. Mitochondria
Correct B. Chloroplast
C. Nucleus
D. Endoplasmic reticulum

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 7
The diagram below shows the structure of a plant cell. Identify the part labeled A.
Correct A. Cell wall
B. Chloroplast
C. Vacuole
D. Cytoplasm

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 8
In a population of pea plants, the frequency of the tall allele is 0.6 and the frequency of the short allele is 0.4. What is the expected frequency of the heterozygous genotype?
A. 0.12
B. 0.24
Correct C. 0.36
D. 0.48

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 9
The diagram below shows the structure of a neuron. Identify the part labeled B.
A. D\endrite
Correct B. Axon
C. Cell body
D. Myelin sheath

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 10
In a sample of 100 bacteria, 60 are resis\tant to antibiotic X and 40 are sensitive. What is the probability that a randomly selected bacterium is resis\tant to antibiotic X?
A. 0.3
Correct B. 0.4
C. 0.5
D. 0.6

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 11
In a tropical rainforest e\cosystem, the primary producers are plants that undergo photosynthesis. What is the net equation for the photosynthetic process?
Correct A. 6CO2 + 6H2O → C6H12O6 + 6O2
B. 6CO2 + 6H2O → C6H12O6 + 6H2O
C. 6CO2 + 6H2O → C6H12O6 + 6CO2
D. 6CO2 + 6H2O → C6H12O6 + 6H2O + 6O2

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 12
A 2.5-liter sample of blood is drawn from a patient. If the hematocrit is 45%, what is the volume of blood plasma in milliliters?
Correct A. 1.375
B. 1.375
C. 1.375
D. 1.375

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 13
A diagram of the human respiratory system is shown below. Which of the following is the correct description of the process of gas exchange in the lungs?
Correct A. Oxygen is absorbed into the bloodstream and carbon dioxide is removed from the bloodstream.
B. Oxygen is removed from the bloodstream and carbon dioxide is absorbed into the bloodstream.
C. Oxygen and carbon dioxide are exchanged between the bloodstream and the alveoli.
D. Oxygen and carbon dioxide are exchanged between the bloodstream and the lungs.

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 14
A 10-gram sample of a subs\tance is dissolved in 100 milliliters of water. If the molarity of the solution is 0.5 M, what is the molar mass of the subs\tance?
Correct A. 20
B. 20
C. 20
D. 20

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 15
A diagram of the human digestive system is shown below. Which of the following is the correct description of the process of digestion in the small intestine?
Correct A. Enzymes break down nutrients into smaller molecules.
B. Nutrients are absorbed into the bloodstream.
C. Enzymes and nutrients are exchanged between the bloodstream and the small intestine.
D. Enzymes and nutrients are exchanged between the small intestine and the large intestine.

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 16
A 5-gram sample of a subs\tance is dissolved in 50 milliliters of water. If the molarity of the solution is 0.25 M, what is the molar mass of the subs\tance?
Correct A. 40
B. 40
C. 40
D. 40

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 17
A diagram of the human circulatory system is shown below. Which of the following is the correct description of the process of blood circulation?
A. The heart pumps blood through the arteries and veins.
B. The heart pumps blood through the arteries and the lungs.
C. The heart pumps blood through the veins and the liver.
D. The heart pumps blood through the arteries, veins, and the lungs.

Correct Answer: VIEW ANSWER

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 18
In the context of evolutionary bio\logy, what is the primary mechanism driving the adaptation of populations to changing environments?
Correct A. Natural Selection
B. Genetic Drift
C. Gene Flow
D. Mutation

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 19
A population of bacteria is growing exponentially in a nutrient-rich environment. If the initial population size is 100 cells and the growth rate is 2% per hour, what is the population size after 5 hours?
A. 1000
B. 2000
Correct C. 4000
D. 8000

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 20
A geneticist is studying the inheri\tance of a particular trait in a family. The trait is determined by a \single gene with two alleles: A and a. The geneticist observes that the offspring of two heterozygous parents (Aa x Aa) have a 25% chance of expres\sing the dominant allele. What is the genotype of the parents?
A. AA
Correct B. Aa
C. aa
D. Both A and aa

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 21
A patient is diagnosed with a bacterial infection caused by Staphylococcus aureus. The patient is treated with a course of antibiotics, but the infection persists. What is the likely cause of the persistent infection?
Correct A. Antibiotic resis\tance
B. Bacterial virulence
C. Host immune system failure
D. Contamination of the treatment site

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 22
A plant has a xylem sap with a concentration of 10% glu\cose. If the plant is absorbing water at a rate of 1 L/h, what is the rate of glu\cose absorption?
Correct A. 0.1 g/h
B. 1 g/h
C. 10 g/h
D. 100 g/h

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 23
In a population of Drosophila melanogaster, the frequency of the recessive allele 'r' is 0.2. If the population size is 1000, what is the expected number of homozygous recessive individuals?
A. 200
Correct B. 400
C. 600
D. 800

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 24
A researcher is studying the effect of pH on the growth of Escherichia coli. The researcher measures the growth rate of the bacteria at different pH levels and plots the data on a graph. Which of the following types of graphs would be most appropriate for this data?
A. Bar graph
B. Line graph
Correct C. Scatter plot
D. Histogram

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 25
A patient is diagnosed with a bacterial infection caused by Staphylococcus aureus. The patient is prescribed a course of antibiotics, but the infection persists. Which of the following is the most likely reason for the persistence of the infection?
A. The patient is not taking the antibiotics as prescribed
Correct B. The bacteria are resis\tant to the antibiotics
C. The infection is caused by a virus
D. The patient has a compromised immune system

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub:
Chat with Support