POST UTME JOSEPH AYO BABALOLA UNIVERSITY 2023 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 2.5 L flask contains 1.5 mol of an ideal gas at 27°C. Calculate the pressure of the gas u\sing the ideal gas law.
A. 1.5 atm
B. 2.5 atm
C. 3.5 atm
D. 4.5 atm
Question 2
A diagram of the human eye is shown below. Which part of the eye is responsible for focu\sing light?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 3
The diagram below shows a cross-section of the human eye. Which part of the eye is responsible for detecting light?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 4
A researcher isolates a new species of bacteria that exhibits antibiotic resis\tance. Which of the following is a likely mechanism of resis\tance?
A. Efflux pumps
B. Enzymatic degradation
C. Target modification
D. Outer membrane modification
Question 5
The process of meiosis results in the production of which of the following?
A. Somatic cells
B. Germ cells
C. Muscle cells
D. Nerve cells
Question 6
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. 0.36
B. 0.64
C. 0.72
D. 0.84
Question 7
The process of digestion involves the breakdown of large molecules of food into smaller molecules that can be absorbed and utilized by the body. Which of the following statements is TRUE about the role of the pancreas in digestion?
A. The pancreas produces enzymes that help break down carbohydrates into simple sugars.
B. The pancreas produces hormones that help regulate blood sugar levels.
C. The pancreas produces enzymes that help break down proteins into amino acids.
D. The pancreas produces enzymes that help break down fats into fatty acids and glycerol.
Question 8
A 25-year-old male presents with symptoms of malabsorption. Which of the following is the most likely cause of his condition?
A. Celiac disease
B. Crohn's disease
C. Ulcerative colitis
D. Whipple's disease
Question 9
The diagram below shows a simple circuit. What is the total current of the circuit?
A. I1 + I2
B. I1 - I2
C. I1 x I2
D. I1 / I2
Question 10
The process of respiration in animals involves the breakdown of glu\cose to produce energy. What is the primary byproduct of cellular respiration?
A. Carbon dioxide
B. Water
C. Energy
D. Oxygen
Question 11
A diagram of a simple e\cosystem is shown below. Which of the following is a producer in the e\cosystem?
A. Plant
B. Animal
C. Decomposer
D. Consumer
Question 12
A diagram of the human body is shown below. Which part of the body is responsible for regulating body temperature?
A. Sweat Glands
B. Blood Vessels
C. Skeletal Muscle
D. Adrenal Glands
Question 13
The xylem tissue in plants is responsible for transporting water and minerals from the roots to the leaves. What is the primary function of the tracheids in the xylem?
A. To transport water and minerals from the roots to the leaves
B. To store water and minerals in the leaves
C. To regulate the amount of water lost through transpiration
D. To absorb carbon dioxide from the atmosphere
Question 14
A researcher is studying the structure of a protein. Which of the following is a type of secondary structure?
A. Alpha helix
B. Beta sheet
C. Random coil
D. All of the above
Question 15
In a population of 1000 individuals, 50% are heterozygous for the gene controlling the production of the enzyme lactase. If 20% of the population is lactose intolerant, what is the probability that a randomly selected individual is lactose intolerant and homozygous recessive for the gene?
A. 0.05
B. 0.1
C. 0.2
D. 0.25

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