POST UTME BOWEN UNIVERSITY 2022 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 50 kg person is running at a speed of 10 m/s. If the person's metabolic rate is 200 W, what is the rate of heat loss from the person's body?
A. 100 W
B. 200 W
C. 300 W
D. 400 W
Question 2
The Hardy-Weinberg principle states that the frequency of alleles in a population will remain cons\tant from generation to generation if five certain 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 3
The process of cellular respiration in cells involves the breakdown of glu\cose to produce energy. Which of the following is a stage of cellular respiration?
A. Glycolysis
B. Citric acid cycle
C. Electron transport chain
D. Fermentation
Question 4
The xylem tissue in plants is responsible for transporting?
A. Water and minerals
B. Sugars and amino acids
C. Hormones and waste products
D. Oxygen and carbon dioxide
Question 5
A plant has a root system with a total surface area of 100 cm^2. If the root system is 50% efficient in absorbing water, what is the maximum amount of water that can be absorbed by the plant per hour?
A. 10 mL
B. 20 mL
C. 50 mL
D. 100 mL
Question 6
A population of bacteria is growing exponentially. If the initial population is 1000 and the growth rate is 2% per hour, what is the population after 5 hours?
A. 1000
B. 1200
C. 1300
D. 1400
Question 7
A 50 mL sample of a solution containing 0.1 M glu\cose is diluted to a total volume of 100 mL. What is the resulting concentration of the solution?
A. 0.05 M
B. 0.075 M
C. 0.1 M
D. 0.125 M
Question 8
In a photosynthetic pathway, which of the following electron carriers is responsible for the transfer of electrons from plastocyanin to the reaction center of photosystem II?
A. Ferredoxin
B. Plastocyanin
C. Cytochrome b6f complex
D. P700
Question 9
A 2.0 L flask contains 0.50 M NaCl solution. If 1.0 M HCl is slowly added to the solution, what is the concentration of the resulting solution?
A. 0.50 M
B. 1.0 M
C. 1.5 M
D. 2.0 M
Question 10
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. 0.36
B. 0.64
C. 0.72
D. 0.84
Question 11
The process of photosynthesis in plants involves the conversion of light energy into chemical energy. Which of the following is a byproduct of photosynthesis?
A. Oxygen
B. Carbon dioxide
C. Water
D. Glu\cose
Question 12
A diagram of the human respiratory system is shown below. What is the function of the alveoli?
A. Gas exchange
B. Oxygen transport
C. Carbon dioxide removal
D. Respiratory rhythm regulation
Question 13
In a population of Drosophila melanogaster, the frequency of the recessive allele 'r' is 0.2. If the population size is 1000, how many individuals are expected to be homozygous recessive?
A. 180
B. 200
C. 220
D. 240
Question 14
A population of E. coli is grown in a nutrient-rich medium. If the initial population size is 10^6 cells, and the population doubles every 30 minutes, what is the population size after 2 hours?
A. 10^8
B. 10^9
C. 10^10
D. 10^11
Question 15
A plant with the genotype 'Rr' is crossed with a plant with the genotype 'rr'. What is the probability that the offspring will be homozygous dominant?
A. 0.25
B. 0.5
C. 0.75
D. 0.9

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