POST UTME CALEB UNIVERSITY 2023 Biology | Objective
Practice these randomly selected questions to test your readiness.
Question 1
A population of rabbits is growing according to the \logistic growth model. If the initial population size is 100 and the carrying capacity is 1000, what is the population size after 5 generations?
Question 2
In a certain e\cosystem, the primary producers (plants) are the only source of energy for the herbivores. If the primary producers are removed, what will happen to the herbivores?
Question 3
A diagram of the human respiratory system is shown below. Which of the following structures is responsible for the exchange of oxygen and carbon dioxide?
Question 4
A researcher is studying the effect of temperature on the rate of enzyme-catalyzed reactions. Which of the following types of data would be most appropriate for this study?
Question 5
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 heterozygous genotype 'Aa'?
Question 6
A genetic disorder is caused by a mutation in the DNA sequence of a gene. Which of the following types of mutations is most likely to result in a frameshift mutation?
Question 7
In the context of evolutionary theories, what is the primary mechanism by which genetic drift leads to the fixation of a deleterious mutation?
Question 8
A diagram of a plant cell is shown below. Identify the structure labeled 'A'.
Question 9
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'?
Question 10
The diagram below shows a cross-section of the human eye. Which of the following structures is responsible for detecting light?
Question 11
The nervous system is responsible for transmitting signals throughout the body. What is the primary type of cell that makes up the nervous system?
Question 12
A 25-year-old woman is diagnosed with a genetic disorder that affects her ability to digest lactose. Which of the following enzymes is most likely deficient in her body?
Question 13
In a population of rabbits, the average litter size is 7.5. Which of the following statistical measures is most likely to be used to describe the distribution of litter sizes?
Question 14
A solution containing 0.1 M glu\cose and 0.1 M fructose is separated by a semipermeable membrane. If the concentration of glu\cose on the other side of the membrane is 0.2 M, what is the concentration of fructose?
Question 15
A plant's xylem is responsible for transporting water and minerals from the roots to the leaves. What is the primary mechanism by which this occurs?
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