POST UTME BABCOCK UNIVERSITY 2022 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A diagram of the respiratory system is shown below. Identify the part labeled 'B' and describe its function in the process of gas exchange.
A. The pharynx, where food and air are separated
B. The trachea, where air is divided into the bronchi
C. The bronchi, where air is further divided into smaller airways
D. The lungs, where gas exchange occurs
Question 2
A 50-year-old man presents with a 10-year history of hypertension. His blood pressure is 180/100 mmHg. Which of the following is the most likely diagnosis?
A. Primary aldosteronism
B. Renal artery stenosis
C. Coarctation of the aorta
D. Pheochromocytoma
Question 3
In the context of classification of living things, what is the primary function of the kingdom level in the taxonomic hierarchy?
A. To group organisms based on their cell structure and organization
B. To group organisms based on their body structure and function
C. To group organisms based on their evolutionary relationships
D. To group organisms based on their geographical distribution
Question 4
The process by which plants release water vapor into the air is known as
A. transpiration
B. respiration
C. photosynthesis
D. translocation
Question 5
A 35-year-old woman presents with primary amenorrhea. Her karyotype is 46,XX. Which of the following is the most likely diagnosis?
A. Turner syndrome
B. Androgen insensitivity syndrome
C. Mayer-Roki\tansky-Küster-Hauser syndrome
D. Swyer syndrome
Question 6
A diagram of the nephron is shown below. Identify the part labeled 'A' and describe its function in the process of filtration.
A. The Bowman's capsule, where filtration occurs
B. The proximal convoluted tubule, where reabsorption occurs
C. The loop of Henle, where water and electrolytes are reabsorbed
D. The distal convoluted tubule, where fine-tuning of electrolyte balance occurs
Question 7
A 2-year-old child is brought to the hospital with symptoms of respiratory distress. The child's oxygen saturation is 88% on room air. Which of the following is the most likely diagnosis?
A. Congenital diaphragmatic hernia
B. Pulmonary atresia
C. Tracheoesophageal fistula
D. Esophageal atresia
Question 8
What is the primary function of the mitochondria in a cell?
A. To produce ATP through photosynthesis
B. To produce ATP through cellular respiration
C. To synthesize proteins
D. To store genetic information
Question 9
A diagram of the mitochondria is shown below. Identify the part labeled 'D' and describe its function in the process of cellular respiration.
A. The outer mitochondrial membrane, where nutrients enter the mitochondria
B. The inner mitochondrial membrane, where ATP is produced
C. The mitochondrial matrix, where the citric acid cycle occurs
D. The intermembrane space, where electrons are transferred
Question 10
The equation for the reaction between hydrogen and oxygen is
A. \( 2H_2 + O_2 \rightarrow 2H_2O \)
B. \( H_2 + O_2 \rightarrow H_2O \)
C. \( 2H_2 + 2O_2 \rightarrow 2H_2O \)
D. \( H_2 + 2O_2 \rightarrow H_2O \)
Question 11
A 5% glu\cose solution is prepared by dissolving 5g of glu\cose in 95g of water. What is the molarity of the solution?
A. 0.0309
B. 0.309
C. 3.09
D. 30.9
Question 12
In the context of genetics, what is the primary function of the mitochondria in the cell?
A. To produce ATP through cellular respiration
B. To synthesize proteins through translation
C. To replicate DNA through the cell cycle
D. To regulate gene expression through transcription
Question 13
A plant cell undergoes asexual reproduction by producing a callus. What is the primary function of the callus?
A. To produce a new plant
B. To repair damaged tissue
C. To store nutrients
D. To regulate water balance
Question 14
A diagram of the taxonomic hierarchy is shown below. Identify the part labeled 'C' and describe its function in the process of classification.
A. The domain level, where organisms are grouped based on their cell structure and organization
B. The kingdom level, where organisms are grouped based on their body structure and function
C. The phylum level, where organisms are grouped based on their evolutionary relationships
D. The class level, where organisms are grouped based on their geographical distribution
Question 15
What is the primary function of the root hairs in a plant?
A. To absorb water and minerals from the soil
B. To produce xylem sap
C. To store water and minerals
D. To regulate the rate of xylem sap flow

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