POST UTME JOSEPH AYO BABALOLA UNIVERSITY 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 25-year-old woman presents with a 6-month history of recurrent episodes of abdominal pain. Her abdominal ultrasound shows a large ovarian cyst. What is the most likely diagnosis?
A. Ectopic pregnancy
B. Ovarian torsion
C. Ovarian cyst
D. Endometriosis
Question 2
A diagram of the human excretory system is shown below. What is the primary function of the kidneys in this diagram?
A. To regulate blood pressure
B. To filter waste from the blood
C. To regulate electrolyte balance
D. To control urine production
Question 3
In a typical angiosperm, what is the primary function of the xylem tissue in the vascular cylinder?
A. Transport of water and minerals from the roots to the leaves
B. Transport of sugars and other organic compounds from the leaves to the roots
C. Support and structure for the plant body
D. Storage of food and other nutrients
Question 4
A diagram of a human eye is shown below. Identify the part labeled A.
A. Cornea
B. Iris
C. Retina
D. Lens
Question 5
A certain species of bacteria doubles in population every 2 hours. If the initial population is 1000 cells, how many cells will there be after 6 hours?
A. 1000000
B. 2000000
C. 4000000
D. 8000000
Question 6
A species of plant has a life cycle that includes both asexual and sexual reproduction. The asexual reproduction is by means of vegetative buds, while the sexual reproduction is by means of seeds. What is the term for this type of life cycle?
A. Hermaphroditism
B. Monocarpic
C. Dioecious
D. Alternation of generations
Question 7
The process by which plants convert light energy into chemical energy is called
A. Photosynthesis
B. Respiration
C. Transpiration
D. Translocation
Question 8
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 0.15 m from its equilibrium position and released from rest. What is the speed of the block when it passes through the equilibrium position?
A. 1.5 m/s
B. 2.5 m/s
C. 3.5 m/s
D. 4.5 m/s
Question 9
The xylem in a plant transports
A. Water and minerals from the roots to the leaves.
B. Sugars and amino acids from the leaves to the roots.
C. Hormones and other signaling molecules throughout the plant.
D. Waste products from the leaves to the roots.
Question 10
In the context of osmoregulation, what is the primary function of the hypothalamus in regulating thirst and hunger?
A. To regulate body temperature
B. To control blood pressure
C. To regulate thirst and hunger
D. To regulate electrolyte balance
Question 11
A 5-year-old child is brought to the doctor with symptoms of dehydration. The doctor orders a blood test to check the levels of sodium and potassium. What is the primary function of the kidneys in this scenario?
A. To regulate the levels of sodium and potassium in the blood
B. To remove excess water from the body
C. To produce hormones that stimulate thirst
D. To filter waste products from the blood
Question 12
A 35-year-old man presents with a 2-year history of progressive dyspnea. His chest X-ray shows a large right-sided pleural effusion. What is the most likely diagnosis?
A. Pulmonary embolism
B. Lung cancer
C. Tuberculosis
D. Congestive heart failure
Question 13
A certain species of plant has a photosynthetic rate of 10 mg CO2/h. If the plant is exposed to light for 8 hours, how much CO2 will it absorb?
A. 80 mg
B. 160 mg
C. 240 mg
D. 320 mg
Question 14
A population of a certain species of bird has a mean body length of 20 cm. If the population is normally distributed, what is the probability that a randomly selected bird will have a body length greater than 22 cm?
A. 0.25
B. 0.5
C. 0.75
D. 0.95
Question 15
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'AA'?
A. 0.64
B. 0.36
C. 0.16
D. 0.04

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