POST UTME IGBINEDION UNIVERSITY 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the context of tissue structure, what is the primary function of the basement membrane?
A. To provide structural support
B. To regulate the movement of ions and molecules
C. To facilitate the exchange of oxygen and carbon dioxide
D. To produce hormones
Question 2
A cell is placed in a hypertonic solution. Which of the following processes will occur?
A. Water will flow into the cell
B. Water will flow out of the cell
C. The cell will swell
D. The cell will shrink
Question 3
A 2.0 g sample of a subs\tance is digested with 10 mL of 2 M HCl. If the resulting solution has a pH of 1.5, what is the concentration of the subs\tance?
A. 0.1 M
B. 0.2 M
C. 0.5 M
D. 1.0 M
Question 4
A diagram of the cell cycle is shown below. Which stage of the cell cycle is characterized by the synthesis of new DNA?
A. G1
B. S
C. G2
D. M
Question 5
A diagram of a plant cell is shown below. Identify the part labeled 'A'.
A. Cell wall
B. Plasma membrane
C. Vacuole
D. Chloroplast
Question 6
In a population of 1000 individuals, the frequency of the dominant allele is 0.6. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the recessive allele?
A. 0.4
B. 0.2
C. 0.8
D. 0.1
Question 7
A diagram of the human reproductive system is shown below. Which part of the system is responsible for producing sperm?
A. Testis
B. Epididymis
C. Vas deferens
D. Prostate gland
Question 8
A diagram of a plant cell is shown below. What is the function of the structure labeled 'X'?
A. Photosynthesis
B. Respiration
C. Cell division
D. Cell signaling
Question 9
A plant has a photosynthetic rate of 10 μmol CO2 s-1. If the light intensity is increased by a factor of 4, what is the new photosynthetic rate?
A. 20 μmol CO2 s-1
B. 40 μmol CO2 s-1
C. 80 μmol CO2 s-1
D. 100 μmol CO2 s-1
Question 10
In the context of evolutionary theory, what is the primary mechanism driving the process of speciation?
A. Natural selection
B. Genetic drift
C. Gene flow
D. Mutation
Question 11
A plant has a photosynthetic rate of 10 μmol CO2 s-1. If the light intensity is increased by a factor of 4, what is the new photosynthetic rate?
A. 40 μmol CO2 s-1
B. 20 μmol CO2 s-1
C. 10 μmol CO2 s-1
D. 5 μmol CO2 s-1
Question 12
A plant is placed in a solution with a high concentration of salt. What will happen to the plant's roots?
A. The roots will grow longer
B. The roots will grow shorter
C. The roots will remain unchanged
D. The roots will die
Question 13
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 dominant allele 'A'?
A. 0.8
B. 0.6
C. 0.4
D. 0.2
Question 14
A cell undergoing mitosis has a DNA content of 2C. If the cell is in the prophase stage, what is the next stage it will enter?
A. Metaphase
B. Anaphase
C. Telophase
D. Cytokinesis
Question 15
A researcher isolates a microorganism that exhibits both aerobic and anaerobic respiration. What is the most likely type of microorganism?
A. Bacteria
B. Yeast
C. Mold
D. Fungus

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