POST UTME DELSU 2020 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the context of hormonal coordination, what is the primary function of the hypothalamus?
A. Regulation of body temperature
B. Control of hunger and thirst
C. Stimulation of the pituitary gland
D. Inhibition of the adrenal glands
Question 2
A researcher is studying the effect of pH on the growth of Escherichia coli. The researcher measures the growth rate of the bacteria at different pH levels and plots the data on a graph. Which of the following types of graphs would best represent the data?
A. Bar Graph
B. Line Graph
C. Scatter Plot
D. Histogram
Question 3
A 5.0 L flask contains 0.1 M NaOH solution. If 0.2 M HCl is slowly added to the solution, what is the concentration of the resulting solution?
A. 0.05 M
B. 0.15 M
C. 0.25 M
D. 0.35 M
Question 4
A 50 mL sample of 0.1 M HCl is added to a 100 mL sample of 0.2 M NaOH. What is the pH of the resulting solution?
A. 0.5
B. 1.0
C. 1.5
D. 2.0
Question 5
The human eye is able to detect a wide range of wavelengths of light. Which of the following structures is responsible for the detection of light?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 6
The diagram below shows the structure of a typical animal cell.
A. The nucleus is the control center of the cell
B. The mitochondria are responsible for generating energy
C. The vacuole is responsible for storing waste products
D. The cell membrane is the outermost layer of the cell
Question 7
A diagram of a titration setup is shown below. If the burette contains 0.1 M HCl and the initial volume is 10 mL, what is the concentration of the solution after adding 20 mL of NaOH?
A. 0.05 M
B. 0.1 M
C. 0.15 M
D. 0.2 M
Question 8
In a human population, the frequency of the 'A' allele is 0.6. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous recessive genotype?
A. 0.16
B. 0.36
C. 0.64
D. 0.8
Question 9
A diagram of a plant cell is shown below. Identify the part labeled 'A'.
A. Mitochondria
B. Chloroplast
C. Nucleus
D. Vacuole
Question 10
A diagram of a plant cell is shown below. Identify the part labeled 'A'.
A. Mitochondria
B. Chloroplast
C. Nucleus
D. Vacuole
Question 11
A cell is placed in a solution with a concentration of 0.1 M glu\cose. If the cell is able to transport glu\cose across the cell membrane at a rate of 10^-6 M/s, how long will it take for the cell to reach a concentration of 0.01 M glu\cose?
A. 10 seconds
B. 100 seconds
C. 1000 seconds
D. 10000 seconds
Question 12
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. 0.5
C. 0.75
D. 1
Question 13
In a population of Drosophila melanogaster, the frequency of the recessive allele 'b' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype?
A. 0.16
B. 0.32
C. 0.64
D. 0.8
Question 14
In a population of Drosophila melanogaster, the frequency of the recessive allele 'r' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype?
A. 0.16
B. 0.36
C. 0.64
D. 0.84
Question 15
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. 0.5
C. 0.75
D. 0.9

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