POST UTME UI 2018 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
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. 0.36
B. 0.64
C. 0.72
D. 0.84
Question 2
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 3
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. 0.36
B. 0.64
C. 0.48
D. 0.52
Question 4
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 5
A solution containing 3.0 g of glu\cose (C6H12O6) is diluted to a final volume of 500 mL. What is the molarity of the glu\cose solution?
A. 0.02 M
B. 0.01 M
C. 0.05 M
D. 0.1 M
Question 6
A 2.5 L flask contains 0.5 M HCl. If 1.0 M NaOH is added to the flask, what is the concentration of HCl after the reaction is complete?
A. 0.25
B. 0.5
C. 0.75
D. 1.0
Question 7
In a community of organisms, what is the term for the process by which organisms adapt to their environment through genetic changes?
A. Natural Selection
B. Genetic Drift
C. Gene Flow
D. Mutation
Question 8
A diagram of a plant is shown below. What is the term for the process by which plants make their own food?
A. Photosynthesis
B. Respiration
C. Transpiration
D. Evaporation
Question 9
A diagram of a simple apparatus is shown below. What is the purpose of the apparatus?
A. To measure the volume of a liquid
B. To measure the mass of a solid
C. To measure the temperature of a solution
D. To measure the pH of a solution
Question 10
A cell is placed in a medium with a pH of 7.5. What is the concentration of hydrogen ions in the medium?
A. 1.0 x 10^{-7.5}
B. 1.0 x 10^{-8}
C. 1.0 x 10^{-9}
D. 1.0 x 10^{-10}
Question 11
A plant with a mutation in the R gene has a flower color of white. If the plant is crossed with a plant with a flower color of red, what is the probability that the offspring will have a flower color of white?
A. 0.25
B. 0.5
C. 0.75
D. 0.9
Question 12
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
Question 13
A 2.5 L flask contains 1.5 atm of O2 at 25°C. If 0.5 atm of O2 is released, what is the partial pressure of O2 in the flask?
A. 0.5
B. 1
C. 1.5
D. 2
Question 14
A diagram of a DNA molecule is shown below. Identify the part responsible for storing genetic information.
A. Double helix
B. Sugar-phosphate backbone
C. Base pairing
D. Nucleotide
Question 15
A 10 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. If the block is displaced by 0.2 m from its equilibrium position and released from rest, what is the maximum speed of the block?
A. 0.1
B. 0.2
C. 0.3
D. 0.4

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