POST UTME EKSU 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 30-year-old woman presents to the emergency department with a severe headache and fever. She has a history of migraines but this episode is different. What is the most likely diagnosis?
A. Migraine
B. Cluster headache
C. Trigeminal neuralgia
D. Subarachnoid hemorrhage
Question 2
A solution of 0.1 M NaOH is added to a solution of 0.1 M HCl. What is the pH of the resulting solution?
A. 1
B. 2
C. 7
D. 14
Question 3
In the context of evolutionary theories, what is the primary mechanism by which natural selection acts on a population?
A. Genetic drift
B. Gene flow
C. Mutation
D. Differential reproduction
Question 4
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'AA'?
A. 0.64
B. 0.36
C. 0.16
D. 0.04
Question 5
A 2.5 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. The block is displaced by 0.25 m from its equilibrium position and released from rest. Assuming the block undergoes simple harmonic motion, what is the maximum speed of the block?
A. 0.5 m/s
B. 1.0 m/s
C. 1.5 m/s
D. 2.0 m/s
Question 6
A patient has been diagnosed with a bacterial infection. Which of the following antibiotics is most likely to be effective against this type of infection?
A. Penicillin
B. Erythromycin
C. Ciprofloxacin
D. Vancomycin
Question 7
A researcher is studying the effect of light intensity on photosynthesis in a controlled environment. The researcher measures the rate of photosynthesis at different light intensities and plots the data on a graph. What is the expected shape of the graph?
A. Linear
B. Parabolic
C. Exponential
D. Sigmoidal
Question 8
In a population of 1000 individuals, 20% are homozygous dominant (BB), 60% are heterozygous (Bb), and 20% are homozygous recessive (bb). If a random sample of 10 individuals is taken, what is the probability that at least 8 of them will be heterozygous?
A. 0.5
B. 0.6
C. 0.7
D. 0.8
Question 9
In a photosynthetic pathway, which of the following is the primary function of the enzyme RuBisCO?
A. Fixing CO2 into a 3-carbon molecule
B. Regenerating RuBP from 3-phosphoglycerate
C. Converting 3-phosphoglycerate into glyceraldehyde 3-phosphate
D. Reducing NADP+ to NADPH
Question 10
A plant grows in a pot with a mixture of soil and sand. Which of the following is the primary function of the xylem in this plant?
A. Transporting water and minerals from the roots to the leaves
B. Producing sugars through photosynthesis
C. Storing water and nutrients in the leaves
D. Regulating the plant's temperature
Question 11
In the context of genetics, what is the primary mechanism by which a gene is expressed?
A. Transcription
B. Translation
C. Mutation
D. Gene regulation
Question 12
A diagram of the human heart is shown below. Which part of the heart is responsible for pumping blood to the lungs?
A. Ventricle
B. Atrium
C. Pulmonary artery
D. Aorta
Question 13
A 10 kg object is moving in a straight line with a velocity of 5 m/s. If the object is acted upon by a force of 20 N, what is the acceleration of the object?
A. 1 m/s^2
B. 2 m/s^2
C. 3 m/s^2
D. 4 m/s^2
Question 14
A researcher is studying the effect of temperature on the growth rate of a microorganism. The researcher measures the growth rate at different temperatures and plots the data on a graph. What is the expected shape of the graph?
A. Linear
B. Parabolic
C. Exponential
D. Sigmoidal
Question 15
A population of Drosophila melanogaster is being studied for its response to selection for increased wing length. Which of the following is a likely consequence of this selection?
A. Increased genetic variation in wing length
B. Decreased genetic variation in wing length
C. No change in genetic variation in wing length
D. Increased genetic variation in body size

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