POST UTME UNILORIN 2017 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 2.0 L sample of a gas at 1.5 atm and 25°C is compressed to 0.5 L. What is the new pressure of the gas?
A. 3.0 atm
B. 4.0 atm
C. 5.0 atm
D. 6.0 atm
Question 2
A patient has been diagnosed with a bacterial infection. Which of the following antibiotics would be most effective against this type of infection?
A. Penicillin
B. Erythromycin
C. Ciprofloxacin
D. Vancomycin
Question 3
The transport of subs\tances within the body is facilitated by the circulatory system. Which of the following is an example of a type of blood vessel?
A. Artery
B. Vein
C. Capillary
D. Nerve
Question 4
In the context of eco\logy, what is the primary function of a keystone species?
A. To regulate the population of other species
B. To provide a source of food for other species
C. To create a habitat for other species
D. To maintain the balance of the e\cosystem
Question 5
A species of plant has a unique adaptation where it can change its leaf shape in response to changes in light intensity. What is the most likely reason for this adaptation?
A. To optimize photosynthesis in low-light conditions
B. To reduce water loss in high-light conditions
C. To attract pollinators in high-light conditions
D. To deter herbivores in low-light conditions
Question 6
A 10 mL sample of a solution containing 0.5 M NaCl is diluted to 50 mL. What is the concentration of the solution after dilution?
A. 0.05 M
B. 0.1 M
C. 0.15 M
D. 0.2 M
Question 7
A species of bird has a unique mating ritual where the male bird performs a complex dance to attract a female. What is the most likely reason for this behavior?
A. To establish dominance over other males
B. To demonstrate genetic fitness to potential mates
C. To signal the availability of food resources
D. To communicate with other birds in the flock
Question 8
A 5-liter solution contains 3 moles of glu\cose (C6H12O6) and 2 moles of fructose (C6H12O6). What is the concentration of glu\cose in the solution?
A. 0.3 M
B. 0.6 M
C. 0.9 M
D. 1.2 M
Question 9
In the human body, what is the primary function of the kidneys?
A. To filter waste products from the blood
B. To regulate the balance of fluids in the body
C. To produce hormones that stimulate the growth of red blood cells
D. To maintain the pH balance of the body
Question 10
A 2.5 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. The block is displaced by 0.15 m from its equilibrium position and released from rest. Assuming the block undergoes simple harmonic motion, what is the maximum speed of the block?
A. 0.5 m/s
B. 1.0 m/s
C. 1.5 m/s
D. 2.0 m/s
Question 11
The classification of living things is based on the following characteristics: cell structure, metabolism, and genetic makeup. Which of the following is an example of a eukaryotic cell?
A. Bacteria
B. Archaea
C. Plant cell
D. Animal cell
Question 12
The process of mitosis results in the production of daughter cells that are genetically identical to the parent cell. Which of the following is a stage of mitosis?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Question 13
The xylem is a type of vascular tissue found in plants. Which of the following is a function of the xylem?
A. Transport of sugars
B. Transport of water
C. Transport of minerals
D. Transport of gases
Question 14
A 2.5 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. The block is displaced by 0.25 m from its equilibrium position and released from rest. What is the maximum speed of the block?
A. 0.5 m/s
B. 1.25 m/s
C. 2.5 m/s
D. 5 m/s
Question 15
A population of rabbits is growing exponentially, with a birth rate of 0.05 and a death rate of 0.01. What is the carrying capacity of the environment?
A. 100
B. 200
C. 500
D. 1000

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