POST UTME MOUNTAIN TOP UNIVERSITY 2022 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
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 pigments is responsible for absorbing light energy in the blue and red regions of the visible spectrum?
A. Chlorophyll a
B. Chlorophyll b
C. Carotenoids
D. Phycobiliproteins
Question 2
In a tropical rainforest, the primary consumers are primarily herbivores that feed on the abundant plant life. Which of the following is a characteristic of these herbivores?
A. They have a large cecum to house a diverse community of microbes.
B. They have a short digestive tract to quickly process plant material.
C. They have a large liver to detoxify plant toxins.
D. They have a large pancreas to produce digestive enzymes.
Question 3
The type of genetic variation that occurs when there is a change in the number of chromosomes is called:
A. Mutation
B. Genetic drift
C. Gene flow
D. Polyploidy
Question 4
A patient is diagnosed with a bacterial infection. The bacteria are resis\tant to multiple antibiotics. What is the most likely explanation for this resis\tance?
A. Horizontal gene transfer
B. Vertical gene transfer
C. Mutation
D. Gene editing
Question 5
The process by which plants make their own food from sunlight is called:
A. Photosynthesis
B. Respiration
C. Transpiration
D. Osmoregulation
Question 6
A species of bird has a wing span of 2 meters. If the bird is flying at a speed of 50 km/h, what is the angular velocity of the bird's wings?
A. 0.25 rad/s
B. 0.5 rad/s
C. 1 rad/s
D. 2 rad/s
Question 7
The type of blood vessel that carries oxygenated blood away from the heart is called:
A. Artery
B. Vein
C. Capillary
D. Aorta
Question 8
The enzyme responsible for the breakdown of starch into maltose is:
A. Amylase
B. Lactase
C. Maltase
D. Sucrase
Question 9
A diagram of a human kidney is shown below. Identify the part labeled 'Y'.
A. A
B. B
C. C
D. D
Question 10
In a eukaryotic cell, the process of mitosis involves the division of the nucleus into two daughter nuclei, each containing the same number and kind of chromosomes as the parent nucleus. Which of the following stages of mitosis is responsible for the condensation of chromosomes?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Question 11
A population of rabbits is growing exponentially, with a birth rate of 0.05 per rabbit per day and a death rate of 0.01 per rabbit per day. What is the net growth rate of the population?
A. 0.04 per rabbit per day
B. 0.03 per rabbit per day
C. 0.02 per rabbit per day
D. 0.01 per rabbit per day
Question 12
A geneticist is studying the inheri\tance of a trait in a population of organisms. What is the primary difference between a dominant and recessive allele?
A. Dominant alleles are always expressed, while recessive alleles are never expressed
B. Dominant alleles are expressed in the presence of a recessive allele
C. Recessive alleles are expressed in the presence of a dominant allele
D. Dominant alleles are always recessive, while recessive alleles are always dominant
Question 13
In a tropical rainforest e\cosystem, the energy pyramid is shaped by the following trophic levels: producers, primary consumers, secondary consumers, and tertiary consumers. What is the approximate percentage of energy that is lost at each trophic level?
A. 10% at each level
B. 20% at each level
C. 30% at each level
D. 40% at each level
Question 14
A bio\logist observes that a population of bacteria exhibits a sigmoid growth curve. What is the most likely reason for this growth pattern?
A. Limited resources
B. Predation by other organisms
C. Genetic variation within the population
D. Environmental factors such as temperature and pH
Question 15
A scientist is studying the process of photosynthesis in a plant. Which of the following is a byproduct of photosynthesis?
A. Oxygen gas
B. Carbon dioxide gas
C. Water vapor
D. Nitrogen gas

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