POST UTME COVENANT UNIVERSITY 2023 Biology | Objective
Practice these randomly selected questions to test your readiness.
Question 1
A patient is diagnosed with a rare genetic disorder that affects the production of a specific enzyme. The patient's symptoms include muscle weakness, fatigue, and difficulty swallowing. Which of the following is the most likely cause of this condition?
Question 2
A diagram of a plant cell is shown below. Identify the part labeled 'A'.
Question 3
A cell is placed in a medium with a concentration of 0.1 M glu\cose. If the cell takes up glu\cose at a rate of 0.05 M/min, what is the concentration of glu\cose in the medium after 10 minutes?
Question 4
In the context of hormonal coordination, which of the following hormones is responsible for stimulating the release of insulin from the pancreas?
Question 5
A 2.5 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. The block is displaced by 0.2 m from its equilibrium position and released from rest. Assuming the block undergoes simple harmonic motion, what is the maximum speed of the block?
Question 6
A researcher is studying the effect of pH on the growth of a microorganism. The researcher observes that the microorganism grows best at a pH of 7. If the pH of the medium is increased to 8, what is the expected effect on the growth of the microorganism?
Question 7
A patient is suffering from a severe case of dehydration and is administered a solution of glu\cose and water. If the patient's blood glu\cose level is 100 mg/dL and the solution contains 5% glu\cose, what will be the effect on the patient's blood glu\cose level after 1 hour?
Question 8
In a population of E. coli, the average generation time is 20 minutes. If the population is doubling every 10 minutes, what is the growth rate of the population?
Question 9
A stream flows through a river and carries with it a mixture of nutrients and sediments. If the stream is polluted with a high concentration of nutrients, what will be the effect on the growth of aquatic plants?
Question 10
The process of osmoregulation in animals involves the regulation of water and salt balance in the body. Which of the following is a key mechanism involved in osmoregulation?
Question 11
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 12
A population of bacteria is growing exponentially with a growth rate of 0.05/min. If the initial population is 100 cells, what is the population after 10 minutes?
Question 13
A species of plant has a growth rate of 0.2 cm/day. If the plant is 10 cm tall, how long will it take for the plant to reach a height of 20 cm?
Question 14
A 40-year-old woman has a 5-year history of asthma. She has a peak expiratory flow rate (PEFR) of 200 L/min. What is her FEV1/FVC ratio?
Question 15
A 50-year-old woman has a 5-year history of type 2 diabetes. She has a body mass index (BMI) of 35 kg/m² and a waist circumference of 120 cm. What is her risk of developing cardiovascular disease?
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