POST UTME CHRISTOPHER UNIVERSITY 2017 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 20-year-old male patient presents with a 2-year history of progressive weakness of the proximal muscles of the lower limbs. On examination, the patient has a characteristic 'pseudohypertrophy' of the muscles of the lower limbs. Which of the following is the most likely diagnosis?
A. Duchenne Muscular Dystrophy
B. Becker Muscular Dystrophy
C. Myotonic Dystrophy
D. Spinal Muscular Atrophy
Question 2
In the context of respiration, what is the primary function of the mitochondria in the cell?
A. To synthesize ATP from glu\cose
B. To break down glu\cose to produce energy
C. To regulate the cell's pH levels
D. To synthesize proteins from amino acids
Question 3
A 35-year-old woman presents with a 5-year history of recurrent episodes of fever, chills, and flank pain. Urinalysis shows the presence of blood and protein. Which of the following is the most likely diagnosis?
A. Pyelonephritis
B. Nephrolithiasis
C. Glomerulonephritis
D. Polycystic Kidney Disease
Question 4
A 25-year-old man presents with a 2-year history of progressive shortness of breath and fatigue. On examination, the patient has a characteristic 'clubbing' of the fingers. Which of the following is the most likely diagnosis?
A. Cystic Fibrosis
B. Chronic Obstructive Pulmonary Disease (COPD)
C. Pulmonary Embolism
D. Lung Cancer
Question 5
A diagram of a simple e\cosystem is shown below. Which of the following is an example of a decomposer in this e\cosystem?
A. Bacteria
B. Fungi
C. Insects
D. Worms
Question 6
A diagram of the human respiratory system is shown below. Which of the following is an example of a gas exchange surface?
A. Trachea
B. Bronchi
C. Alveoli
D. Pulmonary arteries
Question 7
A population of bacteria is growing exponentially. If the initial population size is 100 and the growth rate is 0.05 per hour, what is the population size after 5 hours?
A. 100(1.05)^5
B. 100(1.05)^10
C. 100(1.05)^15
D. 100(1.05)^20
Question 8
A diagram of a simple e\cosystem is shown below. Which of the following organisms is a primary consumer?
A. Herbivore
B. Carnivore
C. Decomposer
D. Producer
Question 9
A diagram of the human excretory system is shown below. Which of the following structures is responsible for the filtration of blood?
A. Kidney
B. Ureter
C. Bladder
D. Urethra
Question 10
A diagram of the human respiratory system is shown below. Which of the following structures is responsible for the exchange of oxygen and carbon dioxide?
A. Trachea
B. Bronchi
C. Lungs
D. Diaphragm
Question 11
A plant grows in a pot with a mixture of soil and sand. The plant's roots absorb water and nutrients from the soil. Which of the following is a characteristic of the plant's roots?
A. They are adapted for gas exchange.
B. They are adapted for water and nutrient absorption.
C. They are adapted for support.
D. They are adapted for reproduction.
Question 12
The diagram below shows a cross-section of a plant root. Which of the following structures is responsible for the absorption of water and minerals from the soil?
A. Root hair
B. Cortex
C. Stele
D. Xylem
Question 13
A diagram of the human nervous system is shown below. Which of the following cranial nerves is responsible for transmitting sensory information from the face to the brain?
A. Cranial nerve III
B. Cranial nerve V
C. Cranial nerve VII
D. Cranial nerve IX
Question 14
A 10-kg block is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. The block is displaced by 0.2 m from its equilibrium position and released from rest. Assuming the block undergoes simple harmonic motion, what is its angular frequency?
A. 1.58 rad/s
B. 2.00 rad/s
C. 2.83 rad/s
D. 3.16 rad/s
Question 15
In a photosynthetic pathway, which of the following is the primary electron acceptor in the reaction center?
A. P700
B. P680
C. Pheophytin
D. Plastocyanin

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