POST UTME UI 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 40-year-old man presents with a 5-year history of progressive weakness and fatigue. His hemoglobin level is 10.5 g/dL, and his mean corpuscular volume (MCV) is 80 fL. Which of the following is the most likely diagnosis?
A. Iron deficiency anemia
B. Thalassemia major
C. Sickle cell disease
D. Vitamin B12 deficiency anemia
Question 2
A plant with the genotype 'Rr' is crossed with a plant with the genotype 'RR'. What is the probability that the offspring will have the genotype 'RR'?
A. 0.25
B. 0.5
C. 0.75
D. 0.9
Question 3
A plant with the genotype Tt is crossed with a plant with the genotype tt. What is the probability that the offspring will have the genotype TT?
A. 0.25
B. 0.50
C. 0.75
D. 1.00
Question 4
A plant with the genotype RrSs is crossed with a plant with the genotype RRSS. What is the probability that the offspring will have the genotype RrSs?
A. 0.25
B. 0.50
C. 0.75
D. 1.00
Question 5
A diagram of the human eye is shown below. Which of the following is the correct function of the part labeled 'A'?
A. To focus light on the retina
B. To detect light intensity
C. To regulate pupil size
D. To produce tears
Question 6
A population of rabbits has a birth rate of 0.05 and a death rate of 0.02. If the initial population is 100, what is the population after 5 generations?
A. 150
B. 120
C. 180
D. 200
Question 7
A 5% solution of NaOH is mixed with a 10% solution of HCl. What is the resulting pH of the solution?
A. 1.00
B. 2.00
C. 3.00
D. 4.00
Question 8
A diagram shows a plant with 5 leaves. If 2 leaves are removed, what is the new number of leaves?
A. 3
B. 5
C. 7
D. 9
Question 9
In the context of classification of living things, which of the following is an example of a characteristic that is used to distinguish between prokaryotic and eukaryotic cells?
A. Presence of a true nucleus
B. Presence of mitochondria
C. Presence of a cell wall
D. Presence of ribosomes
Question 10
In a diploid cell, what is the ratio of autosomal chromosomes to sex chromosomes during meiosis?
A. 1:1
B. 2:1
C. 1:2
D. 2:2
Question 11
A 2.5-liter solution contains 1.8 liters of ethanol and 0.7 liters of water. What is the mole \fraction of ethanol in the solution?
A. 0.64
B. 0.72
C. 0.80
D. 0.88
Question 12
A 25-year-old woman presents with a 2-year history of progressive weakness and fatigue. Her hemoglobin level is 8.5 g/dL, and her mean corpuscular volume (MCV) is 60 fL. Which of the following is the most likely diagnosis?
A. Iron deficiency anemia
B. Thalassemia major
C. Sickle cell disease
D. Vitamin B12 deficiency anemia
Question 13
A plant with the genotype 'Rr' is crossed with a plant of genotype 'RR'. What is the probability that the offspring will have the genotype 'rr'?
A. 0%
B. 25%
C. 50%
D. 100%
Question 14
A plant with the genotype Tt is crossed with a plant with the genotype tt. What is the probability that the offspring will have the genotype tt?
A. 0.25
B. 0.50
C. 0.75
D. 1.00
Question 15
A 50-liter solution contains 30 liters of ethanol and 20 liters of water. What is the mole \fraction of ethanol in the solution?
A. 0.4
B. 0.6
C. 0.8
D. 1.0

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