POST UTME BELLS UNIVERSITY 2022 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the context of blood transport systems, what is the primary function of the erythrocytes?
A. To regulate blood pH
B. To transport oxygen and carbon dioxide
C. To maintain blood pressure
D. To filter waste products
Question 2
In the process of digestion, what is the primary enzyme responsible for breaking down proteins into smaller peptides?
A. Pep\sin
B. Tryp\sin
C. Chymotryp\sin
D. Lactase
Question 3
A diagram of a human eye is shown below. Identify the part labeled 'Y'.
A. Cornea
B. Iris
C. Pupil
D. Macula
Question 4
A diagram of the respiratory system is shown below:
A. The trachea is responsible for gas exchange
B. The lungs are responsible for gas exchange
C. Both the trachea and lungs are responsible for gas exchange
D. Neither the trachea nor the lungs are responsible for gas exchange
Question 5
A population of rabbits is growing exponentially. If the initial population is 100 and the growth rate is 20% per year, what is the population after 5 years?
A. 1000
B. 2000
C. 3000
D. 4000
Question 6
In the context of sexual reproduction, what is the primary function of the sperm cell?
A. To provide genetic material
B. To fertilize the egg cell
C. To regulate hormone levels
D. To maintain blood pressure
Question 7
The hormone responsible for regulating the growth and development of plants is
A. Gibberellin
B. Auxin
C. Cytokinin
D. Ethylene
Question 8
A cell is placed in a medium containing 0.1 M glu\cose and 0.01 M galactose. If the cell has a glu\cose uptake rate of 0.05 M/min and a galactose uptake rate of 0.01 M/min, what is the net rate of glu\cose uptake?
A. 0.04 M/min
B. 0.05 M/min
C. 0.06 M/min
D. 0.07 M/min
Question 9
A patient has been diagnosed with a bacterial infection. The bacteria are resis\tant to multiple antibiotics. Which of the following is the most likely cause of this resis\tance?
A. Horizontal gene transfer
B. Vertical gene transfer
C. Mutation
D. Gene editing
Question 10
A diagram of a human ear is shown below. Identify the part labeled 'Z'.
A. Outer Ear
B. Eardrum
C. Middle Ear
D. Cochlea
Question 11
A diagram of a plant cell is shown below. Identify the part labeled 'X'.
A. Nucleus
B. Mitochondria
C. Vacuole
D. Plastid
Question 12
In the context of evolutionary theory, what is the primary mechanism driving the adaptation of species to their environments?
A. Natural Selection
B. Genetic Drift
C. Gene Flow
D. Mutation
Question 13
A genetic trait is controlled by a \single gene with two alleles. What is the probability of an individual expres\sing the dominant allele if the genotype is heterozygous?
A. 50%
B. 25%
C. 75%
D. 100%
Question 14
In a photosynthetic plant, the light-dep\endent reactions occur in the thylakoid membranes of the chloroplasts. Which of the following is a product of the light-dep\endent reactions?
A. ATP
B. NADPH
C. RuBP
D. O2
Question 15
According to the Hardy-Weinberg principle, what is the expected frequency of the recessive allele in a population?
A. 0.25
B. 0.5
C. 0.75
D. 1.0

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