POST UTME SUMMIT UNIVERSITY 2022 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In a study on the epidemio\logy of malaria, researchers found that the prevalence of the disease was higher in areas with poor sanitation and inadequate waste management. Which of the following is a likely explanation for this observation?
A. The presence of s\tanding water in these areas allows mosquitoes to breed and transmit the disease.
B. The poor sanitation and inadequate waste management lead to the spread of other diseases, which can increase the risk of malaria.
C. The researchers' sampling method was biased towards areas with poor sanitation.
D. The prevalence of malaria is not affected by sanitation and waste management practices.
Question 2
A researcher wants to study the effect of a certain environmental factor on the growth of a plant. The researcher sets up an experiment with 5 different levels of the environmental factor. If the researcher wants to determine the effect of the environmental factor on the plant's growth, what type of experimental design should the researcher use?
A. Controlled Experiment
B. Quasi-Experiment
C. Correlational Study
D. Survey Study
Question 3
The human eye has a unique structure that allows it to detect a wide range of light intensities. Which of the following is the primary function of the iris in this process?
A. To focus light onto the retina.
B. To regulate the amount of light that enters the eye.
C. To detect the color of light.
D. To produce tears to lubricate the eye.
Question 4
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. 0.16
B. 0.64
C. 0.8
D. 0.96
Question 5
In a population of 1000 individuals, 70% are heterozygous for the gene controlling the production of a certain enzyme. If 20% of the population is homozygous recessive, what is the frequency of the recessive allele?
A. 0.3
B. 0.2
C. 0.1
D. 0.05
Question 6
A cell divides by mitosis to produce two daughter cells. If the original cell has 20 chromosomes, how many chromosomes will each daughter cell have?
A. 10
B. 20
C. 30
D. 40
Question 7
A person is experiencing respiratory distress due to a severe asthma attack. What is the primary function of the bronchodilators administered to the person?
A. To relax the muscles in the airways
B. To increase the diameter of the airways
C. To decrease the production of mucus
D. To increase the rate of breathing
Question 8
A population of 1000 individuals is divided into 5 equal-sized groups. Each group has a different allele frequency for a certain gene. If the frequency of the dominant allele is 0.8 in group A, 0.6 in group B, 0.4 in group C, 0.2 in group D, and 0.1 in group E, what is the average frequency of the dominant allele in the entire population?
A. 0.4
B. 0.5
C. 0.6
D. 0.7
Question 9
A researcher is studying the eco\logy of a specific e\cosystem and wants to determine the role of a particular species in the food chain. Which of the following techniques would be most appropriate for this task?
A. Radioisotope labeling
B. Stable isotope analysis
C. DNA sequencing
D. Electron microscopy
Question 10
The diagram below shows the structure of a plant cell. Which of the following statements is true regarding the function of the mitochondria?
A. The mitochondria are responsible for photosynthesis.
B. The mitochondria are responsible for generating energy for the cell.
C. The mitochondria are responsible for storing water in the cell.
D. The mitochondria are responsible for breaking down proteins in the cell.
Question 11
A diagram of the human eye is shown below. Which of the following statements is true regarding the structure of the eye?
A. The cornea is the transparent part of the eye.
B. The iris is the colored part of the eye.
C. The pupil is the opening at the center of the iris.
D. The retina is the light-sensitive tissue at the back of the eye.
Question 12
A diagram shows a circuit with a battery, a resistor, and a switch. If the switch is closed, what is the current in the circuit?
A. 2 A
B. 4 A
C. 6 A
D. 8 A
Question 13
A person has a blood pressure of 120/80 mmHg. What is the systolic blood pressure?
A. 100 mmHg
B. 110 mmHg
C. 120 mmHg
D. 130 mmHg
Question 14
In a xylem vessel, the primary function of the lignin is to provide structural support and rigidity to the cell wall, but it also plays a crucial role in the regulation of water transport. What is the name of the process by which lignin helps to regulate water transport in the xylem?
A. Water potential
B. Osmosis
C. Transpiration pull
D. Capillary action
Question 15
The diagram below shows the structure of a human heart. Which of the following statements is true regarding the function of the atria?
A. The atria are responsible for pumping blood to the lungs.
B. The atria are responsible for pumping blood to the body.
C. The atria are responsible for storing blood in the heart.
D. The atria are responsible for regulating the heartbeat.

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