POST UTME UI 2018 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A diagram of a plant cell is shown below. What is the function of the structure labeled 'A'?
A. Cell Wall
B. Chloroplast
C. Vacuole
D. Mitochondria
Question 2
A 5 kg block is moving at a speed of 2 m/s on a frictionless surface. If a 2 kg block is attached to the first block, what is the new speed of the combined blocks?
A. 1.0
B. 1.5
C. 2.0
D. 2.5
Question 3
A population of 1000 individuals has a mean height of 170 cm and a s\tandard deviation of 10 cm. If a random sample of 50 individuals is taken, what is the probability that the sample mean height will be greater than 175 cm?
A. 0.5
B. 0.9772
C. 0.9954
D. 0.9999
Question 4
A diagram of a human brain is shown below. Identify the part responsible for controlling voluntary movements.
A. Cerebrum
B. Cerebellum
C. Basal ganglia
D. Brainstem
Question 5
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. 1/4
B. 1/2
C. 3/4
D. 1
Question 6
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. 1/4
B. 1/2
C. 3/4
D. 1
Question 7
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. 0.5
B. 0.25
C. 0.75
D. 0.33
Question 8
A 40-year-old man has been experiencing symptoms of angina for the past 5 years. His electrocardiogram (ECG) shows a pattern of ST-segment elevation. What is the most likely cause of his condition?
A. Coronary artery disease
B. Cardiomyopathy
C. Arrhythmia
D. Pericarditis
Question 9
In a population of 1000 individuals, 80% are heterozygous for the gene controlling the ABO blood type. If 10% of the population is type A, and 20% is type B, what is the genotype of the individual who is type AB?
A. aa
B. bb
C. AB
D. aa
Question 10
In a population of Drosophila melanogaster, the frequency of the recessive allele 'b' is 0.2. If the population size is 1000, what is the expected number of homozygous recessive individuals?
A. 2
B. 4
C. 6
D. 8
Question 11
A solution containing 0.1 M glu\cose and 0.2 M fructose is separated by a semipermeable membrane. What is the concentration of glu\cose in the solution on the side of the membrane where the concentration of glu\cose is higher?
A. 0.05
B. 0.1
C. 0.15
D. 0.2
Question 12
A diagram of a human eye is shown below. Identify the part responsible for detecting light.
A. Cornea
B. Iris
C. Retina
D. Lens
Question 13
A diagram of a plant cell is shown below. Identify the organelle responsible for photosynthesis.
A. Vacuole
B. Chloroplast
C. Mitochondria
D. Nucleus
Question 14
A cell is placed in a medium with a pH of 5.5. What is the concentration of hydrogen ions in the medium?
A. 1.0 x 10^{-5.5}
B. 1.0 x 10^{-6}
C. 1.0 x 10^{-7}
D. 1.0 x 10^{-8}
Question 15
A solution containing 2.5 g of glu\cose (C6H12O6) is diluted to a final volume of 250 mL. What is the molarity of the glu\cose solution?
A. 0.01 M
B. 0.05 M
C. 0.1 M
D. 0.2 M

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