POST UTME SUMMIT UNIVERSITY 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The process of natural selection acts on variation in a population, leading to the evolution of new traits. Which of the following is an example of a trait that has evolved through natural selection?
A. The development of antibiotic resis\tance in bacteria
B. The evolution of the peppered moth
C. The development of pesticide resis\tance in insects
D. The evolution of the human eye
Question 2
A 25-year-old male presents with a 2-year history of progressive weakness and fatigue. His hemoglobin level is 8 g/dL. Which of the following is the most likely diagnosis?
A. Iron deficiency anemia
B. Thalassemia major
C. Sickle cell disease
D. Beta-thalassemia minor
Question 3
The type of symbiotic relationship in which one organism benefits and the other is harmed is known as
A. Mutualism
B. Commensalism
C. Parasitism
D. Predation
Question 4
A 30-year-old man is diagnosed with a rare genetic disorder that affects his ability to synthesize certain amino acids. Which of the following is the most likely cause of this condition?
A. Phenylketonuria
B. Maple syrup urine disease
C. Homocystinuria
D. Tyro\sinemia
Question 5
A diagram of the xylem tissue is shown below. What is the primary function of the tracheids in this tissue?
A. To transport water and minerals from the roots to the leaves
B. To store water and nutrients in the stem
C. To provide structural support to the plant
D. To regulate the movement of ions and water
Question 6
The hormone responsible for regulating the growth and development of plants is
A. Auxin
B. Gibberellin
C. Cytokinin
D. Ethylene
Question 7
A 35-year-old female presents with a 5-year history of progressive shortness of breath and fatigue. Her hemoglobin level is 10 g/dL. Which of the following is the most likely diagnosis?
A. Chronic obstructive pulmonary disease (COPD)
B. Asthma
C. Pulmonary embolism
D. Cystic fibrosis
Question 8
The process by which an organism's cells become specialized to perform specific functions is known as
A. Differentiation
B. Mitosis
C. Meiosis
D. Apoptosis
Question 9
A plant undergoes photosynthesis to produce glu\cose. What is the primary function of the stomata during this process?
A. To regulate water loss
B. To regulate gas exchange
C. To regulate temperature
D. To regulate nutrient uptake
Question 10
In the context of sense organs, what is the primary function of the cochlea in the human ear?
A. To transmit sound vibrations to the auditory nerve
B. To convert sound vibrations into electrical signals
C. To amplify sound vibrations
D. To filter out background noise
Question 11
Which of the following is an example of a heterotrophic organism?
A. Bacteria
B. Chloroplast
C. Human
D. Algae
Question 12
The type of reproduction in which an organism produces offspring that are genetically unique is known as
A. Asexual reproduction
B. Sexual reproduction
C. Mutualism
D. Commensalism
Question 13
The process by which an organism's cells become specialized to perform specific functions is known as
A. Differentiation
B. Mitosis
C. Meiosis
D. Apoptosis
Question 14
A patient has a blood glu\cose level of 120 mg/dL. If the patient is given an oral glu\cose tolerance test (OGTT) with a dose of 75 g of glu\cose, what is the expected increase in blood glu\cose level after 2 hours?
A. 50 mg/dL
B. 75 mg/dL
C. 100 mg/dL
D. 150 mg/dL
Question 15
A cell undergoes mitosis to produce two daughter cells. What is the primary function of the centrioles during this process?
A. To form the spindle fibers
B. To separate the chromosomes
C. To package the genetic material
D. To regulate cell growth

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