POST UTME BOWEN UNIVERSITY 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'?
Question 2
In the human eye, the process of vision involves the conversion of light into electrical signals that are transmitted to the brain. Which of the following structures plays a crucial role in this process?
Question 3
The process of genetic drift in a population can be influenced by the following factors except:
Question 4
A 2.0 L flask contains 1.0 mol of an ideal gas at 298 K. If the gas is allowed to expand to 4.0 L at cons\tant temperature, what is the new pressure?
Question 5
In the context of evolutionary theories, what is the primary mechanism by which genetic drift leads to the fixation of a deleterious mutation?
Question 6
In the human body, the process of digestion involves the breakdown of food into smaller molecules that can be absorbed and utilized by the body. Which of the following enzymes plays a crucial role in this process?
Question 7
Which of the following microorganisms is responsible for the production of botulinum toxin?
Question 8
The diagram below shows the structure of a neuron. Which of the following parts is responsible for transmitting signals?
Question 9
A 0.1 M solution of a weak acid (HA) is 10% dissociated at equilibrium. If 0.1 M NaOH is added to the solution, what is the new pH?
Question 10
The nervous system of an organism is responsible for transmitting signals from the sense organs to the brain. Which of the following is NOT a type of sense organ?
Question 11
The xylem in a plant is responsible for transporting water and minerals from the roots to the leaves. Which of the following is a type of xylem cell?
Question 12
A population of 1000 individuals is growing \logistically with a carrying capacity of 2000. If the initial growth rate is 0.2 per year, what is the population size after 10 years?
Question 13
In the process of mitosis, the chromosomes are duplicated and then separated into two daughter cells. Which of the following stages of mitosis is responsible for the separation of chromosomes?
Question 14
In the human eye, what is the primary function of the retina?
Question 15
The process of digestion in the human body involves the breakdown of food into smaller molecules. Which of the following enzymes is responsible for breaking down proteins?
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