POST UTME OSUSTECH 2025 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the xylem, water and minerals are transported from the roots to the leaves through the process of
A. osmosis
B. active transport
C. transpiration pull
D. diffusion
Question 2
A 30-year-old male patient is experiencing symptoms of kidney failure. His serum creatinine level is elevated at 3.5 mg/dL. Which of the following is the most likely cause of his condition?
A. Diabetic nephropathy
B. Hypertensive nephrosclerosis
C. Chronic interstitial nephritis
D. Acute tubular necrosis
Question 3
In the process of cellular respiration, what is the function of the electron transport chain?
A. To generate ATP
B. To produce NADH and FADH2
C. To regulate the cell cycle
D. To transport electrons
Question 4
A 50 kg person is s\tanding on a scale in a lift. If the lift is accelerating upwards at 2 m s^-2, what is the reading on the scale?
A. 500 N
B. 550 N
C. 600 N
D. 650 N
Question 5
The process by which the nervous system coordinates the body's response to a stimulus is known as
A. Reflex Arc
B. Homeostasis
C. Neurotransmission
D. Synaptic Plasticity
Question 6
In a study on the effect of pH on the growth of E. coli, the following data were collected:\n\npH 0 1 2 3 4 5 6 7 8 9 10\n\nGrowth (OD600) 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1\n\nWhat is the pKa of the acid responsible for the change in growth rate?
A. 4.5
B. 5.5
C. 6.5
D. 7.5
Question 7
The main function of the excretory system is to remove
A. waste products
B. excess water
C. excess salts
D. all of the above
Question 8
A patient is experiencing symptoms of a neuro\logical disorder characterized by involuntary muscle contractions and spasms. Which of the following is the most likely cause of his condition?
A. Multiple sclerosis
B. Amyotrophic lateral sclerosis
C. Huntington's disease
D. Parkinson's disease
Question 9
The process of diffusion occurs when there is a
A. high concentration of particles
B. low concentration of particles
C. equal concentration of particles
D. unequal concentration of particles
Question 10
A population of rabbits is growing exponentially. If the initial population is 100 and the growth rate is 20% per year, what will be the population after 5 years?
A. 1000
B. 2000
C. 5000
D. 10000
Question 11
A patient is experiencing symptoms of a visual disorder characterized by blurred vision and sensitivity to light. Which of the following is the most likely cause of his condition?
A. Cataract
B. Glaucoma
C. Macular degeneration
D. Diabetic retinopathy
Question 12
The hormone responsible for the regulation of growth and development in plants is
A. auxin
B. gibberellin
C. cytokinin
D. abscisic acid
Question 13
The process of mitosis results in the production of
A. 2 daughter cells
B. 4 daughter cells
C. 8 daughter cells
D. 16 daughter cells
Question 14
A 2.5 L flask contains 1.5 mol of an ideal gas at 27°C. What is the pressure of the gas, assuming it behaves like an ideal gas?
A. 1.01 x 10^5 Pa
B. 2.01 x 10^5 Pa
C. 3.01 x 10^5 Pa
D. 4.01 x 10^5 Pa
Question 15
In the process of mitosis, what is the function of the spindle fibers?
A. To separate the chromosomes
B. To attach the chromosomes to the spindle fibers
C. To move the chromosomes to the poles
D. To regulate the cell cycle

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