POST UTME BOWEN UNIVERSITY 2020 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A woman with a history of polycystic ovary syndrome (PCOS) is trying to conceive. What is the primary cause of infertility in PCOS?
A. hormonal imbalance
B. ovarian cysts
C. uterine fibroids
D. \endometriosis
Question 2
In a population of Drosophila melanogaster, the frequency of the recessive allele 'r' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'RR'?
A. 0.64
B. 0.36
C. 0.16
D. 0.84
Question 3
A patient with a severe case of diabetes mellitus is experiencing symptoms of ketoacidosis. Which of the following is a likely cause of this condition?
A. Insufficient insulin production
B. Inadequate glu\cose uptake by cells
C. Increased glucagon levels
D. All of the above
Question 4
In a population of Drosophila melanogaster, the frequency of the recessive allele 'b' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype?
A. 0.2
B. 0.4
C. 0.6
D. 0.8
Question 5
A diagram of the cell cycle is shown below. Which phase of the cell cycle is characterized by DNA replication?
A. G1 phase
B. S phase
C. G2 phase
D. M phase
Question 6
In a tropical rainforest e\cosystem, the primary producers are mainly composed of which of the following plant species?
A. Tropical trees (e.g., mahogany, teak)
B. Epiphytes (e.g., orchids, bromeliads)
C. Herbaceous plants (e.g., grasses, wildflowers)
D. Climbing plants (e.g., vines, lianas)
Question 7
A plant with the genotype 'Rr' is crossed with a plant with the genotype 'RR'. What is the probability that the offspring will have the genotype 'Rr'?
A. 0.25
B. 0.5
C. 0.75
D. 0.9
Question 8
The diagram below shows the structure of a human eye. Which part is responsible for detecting light?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 9
A diagram of a simple circuit is shown below. What is the current flowing through the circuit?
A. 2A
B. 3A
C. 4A
D. 5A
Question 10
A solution contains 2.5 g of glu\cose (C6H12O6) per liter. If the molar mass of glu\cose is 180 g/mol, what is the concentration of the solution in moles per liter?
A. 0.014 mol/L
B. 0.017 mol/L
C. 0.020 mol/L
D. 0.023 mol/L
Question 11
A 0.5 M solution of NaCl is prepared by dissolving 0.5 mol of NaCl in 1 L of water. What is the concentration of Cl- ions in the solution?
A. 0.25 M
B. 0.5 M
C. 0.75 M
D. 1 M
Question 12
A plant with the genotype 'Tt' is crossed with a plant with the genotype 'tt'. What is the probability that the offspring will have the genotype 'TT'?
A. 0.25
B. 0.5
C. 0.75
D. 0.9
Question 13
The process of osmoregulation in humans involves the regulation of which of the following?
A. Water balance
B. Sodium balance
C. Potassium balance
D. All of the above
Question 14
A person with a respiratory rate of 20 breaths per minute is exerci\sing moderately. What is the approximate volume of air inhaled per minute?
A. 500 mL
B. 1000 mL
C. 1500 mL
D. 2000 mL
Question 15
A diagram of the human eye is shown below. Which part of the eye is responsible for detecting light?
A. Cornea
B. Iris
C. Retina
D. Lens

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub: