POST UTME PAN-ATLANTIC UNIVERSITY 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the process of cellular respiration, what is the primary source of energy for the electron transport chain?
A. ATP
B. NADH
C. FADH2
D. Pyruvate
Question 2
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 3
A microorganism is isolated from a patient with a severe infection. The microorganism is identified as a Gram-positive, catalase-negative bacterium. What is the most likely cause of the infection?
A. Staphylococcus aureus
B. Streptococcus pneumoniae
C. Enterococcus faecalis
D. Listeria monocytogenes
Question 4
In the context of growth and regulation, what is the primary function of the hypothalamic-pituitary-adrenal (HPA) axis?
A. Regulation of body temperature
B. Maintenance of homeostasis
C. Stimulation of growth and development
D. Modulation of immune response
Question 5
The process by which plants convert light energy into chemical energy is known as?
A. Respiration
B. Photosynthesis
C. Transpiration
D. Osmosis
Question 6
A diagram of a muscle cell is shown below. What is the function of the t-tubules?
A. To transmit signals away from the cell body
B. To regulate the concentration of calcium ions
C. To store genetic information
D. To synthesize ATP through cellular respiration
Question 7
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 8
A population of a specific species of plant was subjected to a genetic mutation that resulted in a change in the frequency of a specific allele. The mutation was found to be dominant and had a significant effect on the fitness of the individuals. However, the mutation did not 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
In the process of photosynthesis, what is the primary reac\tant that is converted into glu\cose?
A. CO2
B. H2O
C. O2
D. ATP
Question 10
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 11
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 12
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 13
The process by which the body regulates the amount of water in the body is known as?
A. Osmosis
B. Diffusion
C. Active transport
D. Hormonal regulation
Question 14
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 15
A diagram of a muscle cell is shown below. What is the function of the sarcoplasmic reticulum?
A. To synthesize ATP through cellular respiration
B. To regulate the concentration of calcium ions
C. To store genetic information
D. To transmit signals away from the cell body

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