POST UTME PAN-ATLANTIC UNIVERSITY 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the process of photosynthesis, what is the primary reac\tant that is converted into oxygen?
A. CO2
B. H2O
C. O2
D. ATP
Question 2
A diagram of the human circulatory system is shown below. Which of the following statements is true regarding the function of the coronary arteries?
A. They supply oxygenated blood to the heart muscle.
B. They supply deoxygenated blood to the lungs.
C. They regulate body temperature.
D. They filter out waste products from the blood.
Question 3
A genetic disorder is caused by a mutation in the HFE gene. What type of mutation is most likely responsible for this disorder?
A. Point mutation
B. Frameshift mutation
C. Deletion mutation
D. Insertion mutation
Question 4
In the context of evolutionary theory, what is the primary mechanism by which genetic variation is introduced into a population?
A. Mutation
B. Genetic drift
C. Gene flow
D. Natural selection
Question 5
A genetic trait is inherited in an autosomal dominant pattern. What is the probability that a child will inherit the dominant allele from a parent who is heterozygous for the trait?
A. 25%
B. 50%
C. 75%
D. 100%
Question 6
A patient is diagnosed with a respiratory disease characterized by inflammation of the airways. Which of the following is a common symptom of this disease?
A. Coughing up blood
B. Shortness of breath
C. Wheezing
D. Fatigue
Question 7
A diagram of a neuron is shown below. What is the function of the d\endrites?
A. To transmit signals away from the cell body
B. To receive signals from other neurons
C. To synthesize neurotransmitters
D. To store genetic information
Question 8
A population of Drosophila melanogaster was subjected to a genetic mutation that resulted in a change in the frequency of a specific allele. The mutation was found to be recessive and had no effect on the fitness of the individuals. However, the mutation did result in a change in the frequency of the allele in the population. What is the most likely explanation for this finding?
A. The mutation was a result of genetic drift.
B. The mutation was a result of natural selection.
C. The mutation was a result of gene flow.
D. The mutation was a result of genetic mutation.
Question 9
A diagram of a neuron is shown below. What is the function of the axon?
A. To transmit signals away from the cell body
B. To receive signals from other neurons
C. To synthesize neurotransmitters
D. To store genetic information
Question 10
What is the primary function of the chloroplasts in plant cells?
A. Protein synthesis
B. Cell signaling
C. Lipid synthesis
D. Photosynthesis
Question 11
A study on the sense organs of a specific species of fish found that the fish had a highly developed sense of smell. However, the study also found that the fish had a relatively poor sense of hearing. Which of the following best explains this finding?
A. The fish had a highly developed sense of smell because it was a predator.
B. The fish had a highly developed sense of smell because it was a prey species.
C. The fish had a highly developed sense of smell because it lived in a turbid environment.
D. The fish had a highly developed sense of smell because it was a social species.
Question 12
A diagram of the human respiratory system is shown below. Which of the following statements is true regarding the function of the alveoli?
A. They are responsible for the exchange of oxygen and carbon dioxide between the lungs and the bloodstream.
B. They are involved in the filtration of the blood.
C. They are a part of the digestive system.
D. They are responsible for the production of mucus.
Question 13
A study on the reproductive behavior of a specific species of animal found that the animals exhibited a form of asexual reproduction. However, the study also found that the animals had a complex social structure and were able to communicate with each other. Which of the following best explains this finding?
A. The animals exhibited a form of asexual reproduction because they were able to communicate with each other.
B. The animals exhibited a form of asexual reproduction because they had a complex social structure.
C. The animals exhibited a form of asexual reproduction because they were able to reproduce quickly.
D. The animals exhibited a form of asexual reproduction because they were able to adapt to their environment.
Question 14
In the context of sense organs, what is the primary function of the cochlea in the human ear?
A. To transmit sound vibrations to the brain.
B. To produce sound waves.
C. To filter out background noise.
D. To regulate body temperature.
Question 15
What is the primary mechanism by which plants regulate their water balance in response to changing environmental conditions?
A. Stomatal closure
B. Root hair growth
C. Cuticle thickening
D. Transpiration

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: