POST UTME SUMMIT UNIVERSITY 2022 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
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 2
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 3
A researcher is studying the structure of a protein and wants to determine the location of a specific amino acid. Which of the following techniques would be most appropriate for this task?
A. X-ray crystal\lography
B. Mass spectrometry
C. Nuclear magnetic resonance spectroscopy
D. Electron microscopy
Question 4
A diagram shows a plant with 5 petals. If the plant undergoes asexual reproduction, what is the probability that the offspring will have 5 petals?
A. 0.2
B. 0.4
C. 0.6
D. 0.8
Question 5
A 5-year-old child is diagnosed with a rare genetic disorder that affects the production of a certain enzyme. The child's parents are both carriers of the recessive allele. What is the probability that their next child will be affected?
A. 0.25
B. 0.5
C. 0.75
D. 1
Question 6
A population of bacteria is growing exponentially. If the initial population size is 100 and the population size doubles every 2 hours, what is the population size after 6 hours?
A. 500
B. 800
C. 1000
D. 1200
Question 7
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.
Question 8
The nervous system is responsible for transmitting signals between different parts of the body. Which of the following statements is true regarding the structure of a neuron?
A. The neuron has a long axon and a short d\endrite.
B. The neuron has a long d\endrite and a short axon.
C. The neuron has a long axon and a long d\endrite.
D. The neuron has a short axon and a short d\endrite.
Question 9
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 10
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 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 is placed in a solution with a pH of 5. If the cell membrane has a permeability coefficient of 0.01 cm/s, what is the rate of diffusion of H+ ions into the cell?
A. 0.01
B. 0.1
C. 1
D. 10
Question 13
A diagram of the human eye is shown below. What is the name of the part labeled 'A'?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 14
A 0.50 M solution of glu\cose is prepared by dissolving 25 g of glu\cose in 100 mL of water. What is the molarity of the solution?
A. 1.25
B. 1.39
C. 1.53
D. 1.67
Question 15
A 2.5-liter solution contains 1.5 liters of ethanol and 1 liter of water. If 0.5 liters of ethanol is added to the solution, what is the new concentration of ethanol in the solution?
A. 0.6
B. 0.7
C. 0.8
D. 0.9

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