POST UTME BOWEN UNIVERSITY 2020 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The process of cellular respiration in which glu\cose is broken down to produce energy is known as which of the following?
A. Photosynthesis
B. Respiration
C. Fermentation
D. Glycolysis
Question 2
A person with a respiratory rate of 20 breaths per minute is exerci\sing moderately. What is the approximate volume of air inhaled per minute?
A. 500 mL
B. 1000 mL
C. 1500 mL
D. 2000 mL
Question 3
A diagram of the cell cycle is shown below. Which phase of the cell cycle is characterized by DNA replication?
A. G1 phase
B. S phase
C. G2 phase
D. M phase
Question 4
In a random sample of 1000 individuals, 60% are male and 40% are female. If 10% of the males and 20% of the females are smokers, what is the probability that a randomly selected individual is a smoker?
A. 0.12
B. 0.15
C. 0.18
D. 0.20
Question 5
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 6
A plant has a photosynthetic rate of 10 μmol CO2/s. If the plant is exposed to light for 8 hours, what is the total amount of CO2 fixed by the plant?
A. 80 μmol
B. 100 μmol
C. 120 μmol
D. 140 μmol
Question 7
The hormone that stimulates the release of insulin from the pancreas is which of the following?
A. Glucagon
B. Insulin
C. Adrenaline
D. Gastrin
Question 8
A solution contains 2.5 g of glu\cose (C6H12O6) per liter. If the molar mass of glu\cose is 180 g/mol, what is the concentration of the solution in moles per liter?
A. 0.014 mol/L
B. 0.017 mol/L
C. 0.020 mol/L
D. 0.023 mol/L
Question 9
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 'RR'?
A. 0.64
B. 0.36
C. 0.16
D. 0.84
Question 10
The type of nervous system found in humans and other vertebrates is which of the following?
A. Nervous system
B. Endocrine system
C. Circulatory system
D. Integumentary system
Question 11
The diagram below shows the structure of a plant cell. Which part is responsible for photosynthesis?
A. Vacuole
B. Chloroplast
C. Cell Wall
D. Cytoplasm
Question 12
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. 0.2
B. 0.4
C. 0.6
D. 0.8
Question 13
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 14
In the context of the circulatory system, what is the primary function of the coronary arteries?
A. To supply oxygenated blood to the lungs
B. To regulate blood pressure
C. To supply oxygenated blood to the heart muscle
D. To filter waste products from the blood
Question 15
A population of bacteria is growing exponentially with a growth rate of 0.2 h-1. If the initial population is 100 cells, what is the population after 5 hours?
A. 1000 cells
B. 5000 cells
C. 10000 cells
D. 20000 cells

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