POST UTME KSU 2025 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 '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. 0.64
C. 0.36
D. 0.44
Question 2
A microorganism that causes disease in humans is called a pathogen. What is the term for the study of the causes and effects of disease?
A. Epidemio\logy
B. Microbio\logy
C. Immuno\logy
D. Patho\logy
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. 0.72
D. 0.84
Question 4
A solution containing 0.1 M glu\cose and 0.2 M fructose is separated u\sing a semipermeable membrane. What is the concentration of glu\cose in the solution on the side of the membrane with the higher concentration?
A. 0.05 M
B. 0.1 M
C. 0.15 M
D. 0.2 M
Question 5
A solution contains 0.1 M glu\cose and 0.2 M fructose. What is the total concentration of sugars in the solution?
A. 0.1
B. 0.2
C. 0.3
D. 0.4
Question 6
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 7
A plant has a root system that absorbs 0.5 M sucrose from the soil. If the plant transports 0.2 M sucrose to the leaves, what is the concentration of sucrose in the xylem sap?
A. 0.1
B. 0.2
C. 0.35
D. 0.4
Question 8
A diagram of a simple circuit is shown below. Identify the part labeled 'A'.
A. Battery
B. Resistor
C. Switch
D. Wire
Question 9
A neuron has a resting potential of -70 mV. If the membrane potential changes to -55 mV, what is the percentage change in membrane potential?
A. 10.00
B. 20.00
C. 21.43
D. 25.00
Question 10
A diagram of a plant cell is shown below. Identify the part labeled 'A'.
A. Nucleus
B. Mitochondria
C. Chloroplast
D. Vacuole
Question 11
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
Question 12
A cell in interphase has a DNA content of 6.0 pg. If the cell enters mitosis and divides into two daughter cells, what is the total DNA content of the two daughter cells?
A. 12.0 pg
B. 6.0 pg
C. 3.0 pg
D. 1.5 pg
Question 13
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. 0.75
C. 0.25
D. 0.33
Question 14
A 5% solution of NaCl is prepared by dissolving 5 g of NaCl in 95 g of water. What is the mass of the solution?
A. 100 g
B. 95 g
C. 5 g
D. 1000 g
Question 15
A diagram of a plant cell is shown below. What is the function of the structure labeled 'A'?
A. Photosynthesis
B. Respiration
C. Cell division
D. Cell growth

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub: