POST UTME BELLS UNIVERSITY 2019 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 initial population is 100 rabbits, what will be the population after 5 years?
A. 1000
B. 1200
C. 1500
D. 2000
Question 2
The nervous system is responsible for transmitting signals throughout the body. Which of the following types of neurons is responsible for transmitting signals from sensory receptors to the central nervous system?
A. Motor Neurons
B. Sensory Neurons
C. Interneurons
D. Association Neurons
Question 3
In the context of growth and regulation, what is the primary function of the hypothalamus?
A. Regulation of body temperature
B. Regulation of hunger and thirst
C. Regulation of blood pressure
D. Regulation of body weight
Question 4
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 5
The classification of living things is based on the study of their morpho\logy and anatomy. Which of the following is a key characteristic of the kingdom Animalia?
A. Multicellularity
B. Cell wall
C. Chloroplasts
D. Skeletal system
Question 6
A diagram of a human digestive system is shown below. What is the primary function of the pancreas?
A. Produces bile to aid in fat digestion
B. Produces enzymes to aid in protein digestion
C. Produces hormones to regulate blood sugar levels
D. Produces mucus to aid in the movement of food through the digestive system
Question 7
The process of photosynthesis in plants involves the conversion of light energy into chemical energy. What is the byproduct of this process?
A. Glu\cose and oxygen
B. Glu\cose and carbon dioxide
C. Oxygen and carbon dioxide
D. Water and glu\cose
Question 8
A species of bacteria is classified as a Gram-positive, aerobic, rod-shaped bacterium that is capable of producing spores. Which of the following genera is most likely to be the correct classification for this bacterium?
A. Bacillus
B. Clostridium
C. Staphylococcus
D. Escherichia
Question 9
Asexual reproduction in bacteria occurs through a process called binary fission. What is the result of this process?
A. Two daughter cells with the same genetic makeup as the parent cell
B. One daughter cell with a different genetic makeup than the parent cell
C. No change in the genetic makeup of the parent cell
D. Death of the parent cell
Question 10
In the context of sense organs, what is the primary function of the cochlea?
A. Detection of light
B. Detection of sound
C. Detection of touch
D. Detection of smell
Question 11
A patient with a severe case of kidney failure is being treated with a dialysis machine. The machine is designed to remove waste products from the blood u\sing a process called diffusion. Which of the following is the most likely mechanism of diffusion in this process?
A. Passive diffusion
B. Facilitated diffusion
C. Active transport
D. Osmosis
Question 12
A patient with a severe case of respiratory failure is being treated with a ventilator. The ventilator is designed to provide a cons\tant flow of oxygen to the lungs u\sing a process called positive pressure ventilation. Which of the following is the most likely mechanism of positive pressure ventilation in this process?
A. Inspiratory pressure
B. Expiratory pressure
C. Inspiratory flow
D. Expiratory flow
Question 13
In the context of respiration, what is the primary function of the mitochondria?
A. To synthesize ATP from glu\cose
B. To break down glu\cose into carbon dioxide and water
C. To transport oxygen from the lungs to the tissues
D. To regulate blood pH levels
Question 14
A diagram of a human respiratory system is shown below. What is the function of the alveoli?
A. Exchange of oxygen and carbon dioxide
B. Filtering of dust and debris
C. Production of mucus
D. Regulation of body temperature
Question 15
A patient with a severe case of tuberculosis (TB) is being treated with a combination of antibiotics. The patient's sputum is cultured on a medium that contains a selective agent to inhibit the growth of other bacteria. Which of the following is the most likely selective agent used in this medium?
A. Piperacillin
B. Cycloserine
C. Polymyxin B
D. Cefotaxime

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