POST UTME LEAD CITY UNIVERSITY 2025 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 30-year-old woman has a body mass index (BMI) of 35. What is her ideal weight in ki\lograms?
A. 50
B. 60
C. 70
D. 80
Question 2
In a population of 1000 individuals, 70% are heterozygous for the ABO blood group gene, 20% are homozygous dominant, and 10% are homozygous recessive. What is the expected frequency of the recessive allele in this population?
A. 0.05
B. 0.1
C. 0.15
D. 0.2
Question 3
A diagram of the human brain is shown below. What is the primary function of the cerebrum?
A. To regulate body temperature
B. To control movement
C. To process sensory information
D. To produce hormones
Question 4
A 5.0 L flask contains 2.0 mol of an ideal gas at a temperature of 300 K. What is the pressure of the gas?
A. 101325 Pa
B. 202650 Pa
C. 303875 Pa
D. 405100 Pa
Question 5
In the context of evolutionary theory, what is the term for the process by which a new species emerges from an existing one?
A. Speciation
B. Adaptation
C. Mutation
D. Genetic drift
Question 6
A diagram of the human eye is shown below. What is the primary function of the lens?
A. To detect light
B. To focus light
C. To regulate pupil size
D. To produce tears
Question 7
The process of digestion in the human body involves the breakdown of food into smaller molecules that can be absorbed and utilized by the body. Which of the following is a product of this process?
A. Glu\cose
B. Proteins
C. Fats
D. Carbohydrates
Question 8
A 2.0 L flask contains 1.0 M NaOH and 1.0 M HCl. What is the pH of the solution after the reaction is complete?
A. 1
B. 7
C. 10
D. 14
Question 9
A species of bird has a diploid number of chromosomes of 2n = 20. If the bird is self-pollinating, what is the expected frequency of the genotype AAbb?
A. 0.03125
B. 0.0625
C. 0.125
D. 0.25
Question 10
The process by which plants convert light energy into chemical energy is known as:
A. Photosynthesis
B. Respiration
C. Transpiration
D. Translocation
Question 11
The process of photosynthesis in plants involves the conversion of light energy into chemical energy in the form of glu\cose. Which of the following is a byproduct of this process?
A. Oxygen
B. Carbon dioxide
C. Water
D. Nitrogen
Question 12
A plant with the genotype AaBbCcc is crossed with a plant with the genotype aabbCC. What is the probability that the offspring will have the genotype AaBbCc?
A. 1/4
B. 1/2
C. 3/4
D. 1
Question 13
In the context of xylem transport, what is the primary mechanism by which water and minerals are absorbed by the roots and transported to the leaves?
A. Transpiration pull
B. Root pressure
C. Capillary action
D. Osmosis
Question 14
In a typical xylem vessel, what is the primary function of the lignin-rich secondary cell wall?
A. To provide structural support to the vessel
B. To facilitate the transport of water and minerals
C. To regulate the rate of transpiration
D. To store starch and other nutrients
Question 15
A population of birds is found to have a frequency of 0.6 for the allele B, which codes for brown plumage, and a frequency of 0.4 for the allele b, which codes for white plumage. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the genotype BB?
A. 0.36
B. 0.24
C. 0.16
D. 0.04

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