POST UTME IGBINEDION UNIVERSITY 2023 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The process by which an organism responds to a stimulus is known as
A. Reflex Action
B. Innate Behavior
C. Learning
D. Instinct
Question 2
The diagram below shows the structure of a human eye. Identify the part labeled B
A. Cornea
B. Iris
C. Retina
D. Lens
Question 3
A 2.5 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. The block is displaced by 0.25 m from its equilibrium position and released from rest. Assuming the motion is simple harmonic, calculate the maximum speed of the block.
A. 1.25 m/s
B. 2.50 m/s
C. 3.75 m/s
D. 5.00 m/s
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. 0.16
B. 0.24
C. 0.36
D. 0.64
Question 5
A diagram of a human cell is shown below. Identify the part labeled B.
A. Mitochondria
B. Endoplasmic reticulum
C. Golgi apparatus
D. Lysosome
Question 6
The diagram below shows the structure of a plant cell. Identify the part labeled A
A. Cell Wall
B. Cytoplasm
C. Nucleus
D. Mitochondria
Question 7
In a eukaryotic cell, what is the primary function of the Golgi apparatus?
A. Protein synthesis
B. Cell signaling
C. Lipid modification
D. Protein transport
Question 8
Which of the following evolutionary theories proposes that species adapt to their environment through the process of natural selection?
A. Gradualism
B. Punctuated equilibrium
C. Natural selection
D. Saltationism
Question 9
In the context of cell division, what is the primary function of the centrioles during the prophase stage?
A. To form the spindle fibers
B. To organize the chromosomes
C. To divide the cytoplasm
D. To produce the mitotic spindle
Question 10
In the context of cell division, what is the primary function of the spindle fibers?
A. Separation of chromosomes
B. Attachment of chromosomes to the spindle fibers
C. Movement of chromosomes to the poles
D. Separation of sister chromatids
Question 11
In the context of reproduction, what is the primary function of the sperm during fertilization?
A. To provide genetic material
B. To provide nutrients
C. To provide protection
D. To provide motility
Question 12
A 50-year-old woman has a 10-year history of type 2 diabetes. She has a family history of cardiovascular disease and is a non-smoker. Her HbA1c is 9.5%. What is the most appropriate treatment for this patient?
A. Metformin 1000 mg 2 times daily
B. Pioglitazone 45 mg daily
C. Sulfonylurea 4 mg 2 times daily
D. Insulin 20 units 2 times daily
Question 13
A diagram of the human circulatory system is shown below. What is the primary function of the heart?
A. To pump blood throughout the body
B. To regulate the amount of blood in the body
C. To produce red blood cells
D. To maintain the shape of the heart
Question 14
A 5.0-L sample of a gas at 27°C is collected over water at 20°C. What is the partial pressure of the gas?
A. 1.2 atm
B. 1.5 atm
C. 2.0 atm
D. 2.5 atm
Question 15
The diagram below shows the structure of a human heart. Identify the part labeled C
A. Atrium
B. Ventricle
C. Septum
D. Valve

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