POST UTME RSU 2021 Biology | Objective
Practice these randomly selected questions to test your readiness.
Question 1
A researcher isolates a bacterium that exhibits a unique phenotype. The bacterium has a mutation in the gene encoding the enzyme responsible for the conversion of glu\cose to pyruvate. Which of the following enzymes is most likely affected by this mutation?
Question 2
A geneticist is studying the inheri\tance of a trait in a population of mice. The trait is determined by a \single gene with two alleles: 'B' and 'b'. The frequency of the 'B' allele is 0.8, and the frequency of the 'b' allele is 0.2. What is the expected frequency of the homozygous recessive genotype?
Question 3
In a tropical rainforest e\cosystem, the primary consumers are primarily herbivores that feed on the abundant vegetation. Which of the following is a characteristic of these primary consumers?
Question 4
In a cell, what is the term for the process by which the cell membrane becomes more permeable to allow the movement of subs\tances into and out of the cell?
Question 5
A population of rabbits is introduced to a new island with an abundance of food and no natural predators. According to the \logistic growth model, what will happen to the population size over time?
Question 6
Which of the following types of cells is primarily responsible for the production of melanin?
Question 7
A diagram of a human kidney is shown below. What is the function of the structure labeled 'Y'?
Question 8
A researcher isolates a gene that codes for a protein involved in the regulation of cell cycle progression. Which of the following types of mutations would most likely result in a loss of function of this protein?
Question 9
The human eye has a re\fractive index of approximately 1.33. If a light ray enters the eye at an angle of incidence of 30°, what is the angle of re\fraction?
Question 10
In the context of evolutionary theories, what is the primary mechanism by which natural selection acts on genetic variation?
Question 11
A plant cell is placed in a solution with a high concentration of sucrose. What will happen to the cell's osmotic pressure?
Question 12
In the context of evolutionary theory, which of the following mechanisms is responsible for the adaptation of a population to its environment?
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'?
Question 14
In the process of osmoregulation, which of the following mechanisms is primarily responsible for the excretion of excess ions in the kidneys?
Question 15
A cell is placed in a solution with a pH of 7.4. If the cell membrane has a permeability coefficient of 10^-5 cm/s, what is the expected rate of diffusion of H+ ions into the cell?
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