POST UTME IMS U 2020 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 'r' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype?
A. 0.2
B. 0.4
C. 0.6
D. 0.8
Question 2
A diagram of a human respiratory system is shown below. Which of the following statements is true about the lungs?
A. The lungs are responsible for exchanging oxygen and carbon dioxide.
B. The lungs are responsible for regulating the amount of air in the respiratory system.
C. The lungs are responsible for producing mucus to trap dust and other particles.
D. The lungs are responsible for filtering waste products from the blood.
Question 3
In the context of gas exchange, what is the primary function of the alveoli in the lungs?
A. To regulate blood pressure
B. To exchange oxygen and carbon dioxide
C. To filter blood
D. To produce red blood cells
Question 4
A plant has a growth rate of 2 cm/day. If it grows for 5 days, what is the total dis\tance it has grown?
A. 5
B. 10
C. 15
D. 20
Question 5
The diagram below shows the structure of a plant cell. Which part is responsible for photosynthesis?
A. Vacuole
B. Chloroplast
C. Mitochondria
D. Nucleus
Question 6
A 25-year-old woman presents with a 2-year history of recurrent episodes of abdominal pain. Her pain is typically worse after eating and is accompanied by nausea and vomiting. What is the most likely diagnosis?
A. Irritable bowel syndrome (IBS)
B. Inflammatory bowel disease (IBD)
C. Gastroesophageal reflux disease (GERD)
D. Peptic ulcer disease
Question 7
A 40-year-old man presents with a 5-year history of progressive shortness of breath. His chest X-ray shows a large right-sided pleural effusion. What is the most likely diagnosis?
A. Lung cancer
B. Mesothelioma
C. Pleural tuberculosis
D. Chronic heart failure
Question 8
A 10 L flask contains 2.0 mol of an ideal gas at 298 K. If the gas is heated to 373 K, what is the new volume?
A. 10 L
B. 15 L
C. 20 L
D. 25 L
Question 9
In a population of 1000 individuals, 20% are heterozygous for a particular gene. If 10% of the population are homozygous recessive, what is the frequency of the dominant allele?
A. 0.3
B. 0.4
C. 0.5
D. 0.6
Question 10
The Hardy-Weinberg principle states that the frequency of alleles in a population will remain cons\tant from generation to generation if five conditions are met. Which of the following is NOT one of these conditions?
A. Large population size
B. Random mating
C. No mutation
D. No gene flow
Question 11
A population of bacteria grows according to the \logistic growth equation: dN/dt = rN\( 1 - N/K \). If the initial population size is 100, the carrying capacity is 1000, and the growth rate is 0.5, what is the population size at time t = 10?
A. 500
B. 600
C. 700
D. 800
Question 12
The respiratory system is responsible for exchanging gases between the body and the environment. Which of the following is NOT a function of the respiratory system?
A. Oxygenation of the blood
B. Removal of carbon dioxide
C. Regulation of body temperature
D. Production of red blood cells
Question 13
The process of mitosis is divided into four stages: prophase, metaphase, anaphase, and telophase. Which stage is characterized by the condensation of chromosomes?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Question 14
The process of meiosis results in the production of
A. Four haploid daughter cells
B. Two diploid daughter cells
C. One haploid daughter cell
D. Four diploid daughter cells
Question 15
The diagram below shows the structure of a neuron. Which part is responsible for transmitting signals to other neurons?
A. D\endrite
B. Axon
C. Cell body
D. Myelin sheath

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