POST UTME BOWEN UNIVERSITY 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the context of excretion and osmoregulation, what is the primary function of the kidneys in regulating blood pressure?
A. To regulate the amount of water in the blood
B. To remove waste products from the blood
C. To regulate the amount of electrolytes in the blood
D. To regulate blood pressure through the renin-angioten\sin-aldosterone system
Question 2
A population of rabbits is growing according to the \logistic growth model. If the carrying capacity is 1000 individuals and the initial population is 100, what is the population size after 5 generations?
A. 500
B. 750
C. 900
D. 950
Question 3
The diagram below represents a cross-section of a plant root. Identify the part labeled A.
A. Root hair cell
B. Epidermal cell
C. Parenchyma cell
D. Xylem cell
Question 4
In a eukaryotic cell, the process of cell division that results in two daughter cells with the same number of chromosomes as the parent cell is known as
A. Mitosis
B. Meiosis
C. Binary Fission
D. Endosymbiosis
Question 5
The diagram below represents a simple circuit. Identify the part labeled A.
A. Positive terminal
B. Negative terminal
C. Resistor
D. Switch
Question 6
In a eukaryotic cell, which of the following organelles is responsible for protein synthesis?
A. Mitochondria
B. Endoplasmic Reticulum
C. Ribosomes
D. Lysosomes
Question 7
In a tropical rainforest e\cosystem, the primary consumers are primarily composed of which of the following groups?
A. Herbivorous insects
B. Fruiting plants
C. Fungi
D. Decomposers
Question 8
A 10.0 mL sample of a solution is diluted to 100 mL. If the initial concentration is 0.1 M, what is the final concentration?
A. 0.01 M
B. 0.05 M
C. 0.1 M
D. 0.2 M
Question 9
The type of tissue that is composed of nerve cells is known as
A. Epithelial Tissue
B. Connective Tissue
C. Muscle Tissue
D. Nervous Tissue
Question 10
A 5.0 g sample of a subs\tance is heated to 100°C. If the subs\tance undergoes a phase transition and the temperature remains cons\tant, what is the latent heat of vaporization?
A. 10 kJ/mol
B. 20 kJ/mol
C. 30 kJ/mol
D. 40 kJ/mol
Question 11
A 30-year-old woman presents with a 2-year history of recurrent episodes of abdominal pain, diarrhea, and weight loss. Her stool examination reveals the presence of a gram-negative rod. Which of the following is the most likely diagnosis?
A. Salmonellosis
B. Shigellosis
C. Campylobacteriosis
D. Escherichia coli
Question 12
A cell has a surface area of 100 μm^2 and a volume of 1000 μm^3. What is the surface-to-volume ratio of the cell?
A. 1:100
B. 1:10
C. 1:1
D. 10:1
Question 13
In a tropical rainforest, what is the primary role of the decomposer community?
A. Primary producers
B. Primary consumers
C. Decomposers
D. Omnivores
Question 14
The largest organ in the human body is the
A. Skin
B. Liver
C. Lungs
D. Heart
Question 15
A diagram of the human eye is shown below. What is the primary function of the ciliary muscles in this diagram?
A. To change the shape of the lens
B. To regulate the amount of light entering the eye
C. To focus light on the retina
D. To detect movement

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