POST UTME AL-HIKMAH UNIVERSITY 2017 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A population of rabbits is growing at a rate of 20% per year. If the population is currently 1000 rabbits, what will be the population after 5 years?
A. 1630
B. 2000
C. 2500
D. 3000
Question 2
A cell has a membrane potential of -70 mV. If the cell is stimulated to fire an action potential, what is the maximum rate of change of the membrane potential?
A. 10 mV/ms
B. 20 mV/ms
C. 30 mV/ms
D. 40 mV/ms
Question 3
In the context of evolutionary theory, what is the primary mechanism of speciation?
A. Mutation
B. Genetic drift
C. Gene flow
D. Natural selection
Question 4
A cell undergoing mitosis has a total of 46 chromosomes. How many chromosomes will each daughter cell have after mitosis?
A. 23
B. 46
C. 92
D. 184
Question 5
A population of rabbits is growing at a rate of 20% per year. If the current population is 1000, what will be the population after 5 years?
A. 1000
B. 2000
C. 4000
D. 8000
Question 6
In a cell undergoing mitosis, what is the stage where the chromosomes are most condensed?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Question 7
In the context of respiration, what is the primary function of the mitochondria in the process of cellular respiration?
A. To generate ATP through the citric acid cycle
B. To produce NADH and FADH2 through glycolysis
C. To synthesize glu\cose from CO2 and H2O
D. To break down glu\cose into pyruvate through glycolysis
Question 8
In a plant, the xylem is responsible for transporting water and minerals from the roots to the leaves. What is the function of the phloem?
A. Transporting water and minerals from the roots to the leaves
B. Transporting sugars and other organic compounds from the leaves to the rest of the plant
C. Regulating the rate of transpiration
D. Producing chlorophyll
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'?
A. 0.36
B. 0.64
C. 0.48
D. 0.72
Question 10
A diagram of a plant's transport system is shown below. What is the function of the part labeled 'C'?
A. Transporting water and minerals from the roots to the leaves
B. Transporting sugars and other organic compounds from the leaves to the rest of the plant
C. Regulating the rate of transpiration
D. Producing chlorophyll
Question 11
A cell is placed in a solution with a pH of 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?
A. 0.01 cm/s
B. 0.05 cm/s
C. 0.1 cm/s
D. 0.2 cm/s
Question 12
A 50-year-old patient presents with symptoms of chronic kidney disease. Which of the following is a primary function of the kidneys that is affected in this condition?
A. Regulation of blood pressure
B. Maintenance of electrolyte balance
C. Removal of waste products
D. Production of red blood cells
Question 13
A 30-year-old woman presents with symptoms of iron deficiency anemia. Which of the following is a primary function of the liver that is affected in this condition?
A. Production of bile
B. Storage of glycogen
C. Synthesis of cholesterol
D. Storage of iron
Question 14
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'?
A. 0.36
B. 0.64
C. 0.72
D. 0.84
Question 15
A cell is placed in a hypotonic solution. What happens to the cell?
A. The cell shrinks and loses water
B. The cell swells and gains water
C. The cell remains the same size
D. The cell bursts

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