POST UTME MOUNTAIN TOP UNIVERSITY 2020 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The process by which an organism's genetic information is passed from one generation to the next is called
A. Mutation
B. Genetic Drift
C. Gene Flow
D. Heritability
Question 2
In the context of evolutionary theory, what is the primary mechanism by which genetic drift occurs?
A. Mutation
B. Gene flow
C. Genetic drift
D. Natural selection
Question 3
A patient is diagnosed with a bacterial infection. Which of the following is a characteristic feature of bacterial cell walls?
A. Presence of a nuclear envelope
B. Presence of a Golgi apparatus
C. Presence of a cell wall
D. Presence of a mitochondria
Question 4
A cell is placed in a solution with a pH of 7.5. If the cell membrane has a permeability coefficient of 10^-6 cm/s, what is the concentration of hydrogen ions in the cell after 10 minutes?
A. 10^-5 M
B. 10^-6 M
C. 10^-7 M
D. 10^-8 M
Question 5
A population of a species is found to have a mean height of 1.8 meters with a s\tandard deviation of 0.2 meters. If a random sample of 25 individuals is taken from this population, what is the probability that the sample mean height will be greater than 1.9 meters?
A. 0.05
B. 0.01
C. 0.005
D. 0.0005
Question 6
A population of 500 individuals has a frequency of 0.7 for the dominant allele. If the Hardy-Weinberg principle holds, what is the frequency of the recessive allele?
A. 0.3
B. 0.4
C. 0.5
D. 0.6
Question 7
The process of meiosis in a diploid organism results in the production of four haploid daughter cells. Which of the following is a characteristic of the daughter cells produced during meiosis?
A. They have the same number of chromosomes as the parent cell
B. They have half the number of chromosomes as the parent cell
C. They have a mix of maternal and paternal chromosomes
D. They have a different ploidy level than the parent cell
Question 8
A population of 1000 individuals has a frequency of 0.4 for the dominant allele. If the Hardy-Weinberg principle holds, what is the frequency of the recessive allele?
A. 0.2
B. 0.3
C. 0.4
D. 0.5
Question 9
A population of 500 individuals has a frequency of 0.5 for the dominant allele. If the Hardy-Weinberg principle holds, what is the frequency of the recessive allele?
A. 0.2
B. 0.3
C. 0.4
D. 0.5
Question 10
A diagram of the human circulatory system is shown below. What is the function of the part labeled 'B'?
A. To pump blood throughout the body
B. To carry oxygenated blood from the lungs to the heart
C. To carry deoxygenated blood from the heart to the lungs
D. To regulate blood pressure
Question 11
In a tropical rainforest e\cosystem, what is the primary role of the leaf's cuticle in relation to water loss?
A. To prevent water loss through transpiration
B. To facilitate water uptake through the roots
C. To regulate gas exchange between the leaf and the atmosphere
D. To protect the leaf from excessive sunlight
Question 12
In a tropical rainforest, the primary consumers are herbivores that feed on the producers. What is the role of these herbivores in the e\cosystem?
A. Decomposers
B. Primary producers
C. Secondary consumers
D. Tertiary consumers
Question 13
A plant is placed in a controlled environment with a cons\tant temperature and humidity. Which of the following is a characteristic feature of photosynthesis in this plant?
A. Increased rate of photosynthesis
B. Decreased rate of photosynthesis
C. No change in rate of photosynthesis
D. Increased rate of respiration
Question 14
A person with a visual impairment is unable to see objects in their peripheral vision. Which of the following sense organs is responsible for detecting peripheral vision?
A. Retina
B. Optic nerve
C. Cornea
D. Macula
Question 15
In the context of evolutionary theory, what is the term for the process by which a population adapts to its environment?
A. Natural selection
B. Genetic drift
C. Gene flow
D. Mutation

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