POST UTME UNILORIN 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The process of excretion in the human kidney involves the filtration of blood by the glomerulus, followed by the reabsorption of water and ions in the proximal convoluted tubule. Which of the following is the primary mechanism by which the kidney regulates the concentration of ions in the blood?
A. Active transport
B. Passive transport
C. Osmosis
D. Diffusion
Question 2
A population of rabbits is growing according to the \logistic growth equation. If the initial population size is 100 and the carrying capacity is 1000, what is the population size after 5 generations?
A. 200
B. 500
C. 750
D. 900
Question 3
The human kidney is responsible for the regulation of electrolyte balance in the body. Which of the following is the primary mechanism by which the kidney regulates sodium levels in the blood?
A. Active transport
B. Passive transport
C. Osmosis
D. Diffusion
Question 4
The respiratory system is responsible for the exchange of gases between the environment and the body. Which of the following is the primary function of the alveoli in the lungs?
A. To exchange oxygen and carbon dioxide
B. To regulate body temperature
C. To produce red blood cells
D. To filter waste products
Question 5
The diagram below shows the structure of a neuron. What is the function of the d\endrites?
A. Receive signals from other neurons
B. Transmit signals to other neurons
C. Produce neurotransmitters
D. Store genetic information
Question 6
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. 0.64
B. 0.36
C. 0.16
D. 0.04
Question 7
A 5.0 kg block is moving with a speed of 2.0 m/s on a frictionless surface. If a force of 10 N is applied to the block, what is its acceleration?
A. 1.0 m/s^2
B. 2.0 m/s^2
C. 3.0 m/s^2
D. 4.0 m/s^2
Question 8
The human respiratory system is responsible for the exchange of gases between the environment and the body. Which of the following is the primary function of the diaphragm in the respiratory system?
A. To expand the chest cavity
B. To contract the chest cavity
C. To regulate body temperature
D. To produce red blood cells
Question 9
A diagram of the human eye is shown below. What is the function of the part labeled 'A'?
A. To focus light onto the retina
B. To detect changes in light intensity
C. To regulate the amount of light entering the eye
D. To produce tears to lubricate the eye
Question 10
A person has a growth hormone deficiency. Which of the following is a possible effect of this deficiency?
A. The person grows taller than average
B. The person grows shorter than average
C. The person grows at a normal rate
D. The person's growth rate is unaffected
Question 11
In the context of microorganisms and diseases, what is the primary function of the immune system?
A. To produce antibodies to fight infection
B. To regulate the amount of white blood cells
C. To stimulate the release of hormones
D. To regulate body temperature
Question 12
A researcher is studying the effect of a new antibiotic on a bacterial culture. The culture is initially composed of 1000 bacteria, and the antibiotic reduces the population by 20% every hour. If the researcher wants to know the population after 3 hours, what is the population?
A. 512
B. 640
C. 768
D. 896
Question 13
A diagram of the human heart is shown below. Which part of the heart pumps blood to the lungs?
A. Right Ventricle
B. Left Ventricle
C. Right Atrium
D. Left Atrium
Question 14
In the context of classification of living things, what is the primary function of the kingdom level?
A. To group organisms based on their cell structure
B. To categorize organisms based on their genetic makeup
C. To classify organisms based on their body symmetry
D. To group organisms based on their metabolic processes
Question 15
A study on the genetic variation of a population found that 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

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