POST UTME UNILAG 2024 Biology | Objective
Practice these randomly selected questions to test your readiness.
Question 1
A plant growth regulator is shown below. What is the likely effect of this regulator on plant growth?
Question 2
A diagram of a simple circuit is shown below. Identify the component labeled A.
Question 3
In a population of Drosophila melanogaster, the frequency of the recessive allele 'b' for black body color is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'B'B?
Question 4
A diagram of the human heart is shown below. Which part of the heart is responsible for pumping blood to the lungs?
Question 5
A diagram of the human brain is shown below. Which part of the brain is responsible for proces\sing visual information?
Question 6
A diagram shows a plant with a mutation in the 'R' gene, resulting in red flowers. The plant is crossed with a plant with the genotype 'rr'. What is the probability that the offspring will have red flowers?
Question 7
In the context of evolutionary theories, what is the primary mechanism driving the process of speciation in a population of organisms?
Question 8
A diagram of the human digestive system is shown below. Which of the following structures is responsible for the breakdown of proteins?
Question 9
A diagram of a simple e\cosystem is shown below. Identify the role of the producer in the e\cosystem.
Question 10
A cell is placed in a solution with a pH of 5.5. If the cell membrane has a permeability coefficient of 0.01 cm/s, what is the rate of diffusion of H+ ions across the membrane?
Question 11
A researcher is studying the effect of pH on the growth of E. coli bacteria. The researcher measures the growth rate of the bacteria at different pH levels and plots the data on a graph. What type of graph would the researcher most likely use to represent the data?
Question 12
In the context of hormonal coordination, what is the primary function of the hypothalamus-pituitary-adrenal (HPA) axis?
Question 13
In the context of evolutionary theory, what is the primary mechanism by which genetic drift leads to the fixation of a deleterious mutation?
Question 14
A 2.5 L flask contains a mixture of O2 and N2 gases at 25°C and 1 atm. If 0.5 L of N2 is removed, what is the partial pressure of O2 in the flask?
Question 15
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?
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