POST UTME SUMMIT UNIVERSITY 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the context of tissue organization, what is the primary function of the basement membrane in epithelial tissues?
A. To provide structural support to the epithelial cells
B. To facilitate the exchange of nutrients and waste products
C. To act as a barrier against pathogens and toxins
D. To regulate the movement of ions and water
Question 2
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 3
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 4
What is the primary function of the xylem in plants?
A. To transport water and minerals from the roots to the leaves
B. To transport sugars and other organic compounds from the leaves to the rest of the plant
C. To provide structural support to the plant
D. To regulate the plant's water balance
Question 5
In a population of 1000 individuals, 60% are heterozygous for the ABO blood group gene. If 20% of the population is type A, 30% is type B, and 10% is type AB, what is the probability that a randomly selected individual is type O?
A. 0.05
B. 0.10
C. 0.15
D. 0.20
Question 6
The xylem tissue in plants is responsible for transporting water and minerals from the roots to the leaves. Which of the following is a characteristic of xylem tissue?
A. It is composed of dead cells
B. It is responsible for transporting sugars from the leaves to the roots
C. It is composed of living cells
D. It is responsible for transporting water and minerals from the roots to the leaves
Question 7
A diagram of a plant cell is shown below. Which organelle is responsible for photosynthesis?
A. Mitochondria
B. Chloroplast
C. Endoplasmic Reticulum
D. Golgi Apparatus
Question 8
A 30-year-old female presents with a 5-year history of progressive shortness of breath and fatigue. Her hemoglobin level is 12 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 9
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 10
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 11
What is the term for the process by which an organism's genetic information is passed from one generation to the next?
A. Mutation
B. Genetic drift
C. Natural selection
D. Heritability
Question 12
A diagram of the human eye is shown below. Which part of the eye is responsible for detecting light?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 13
In the process of digestion, what is the primary function of the enzyme amylase?
A. To break down proteins
B. To break down carbohydrates
C. To break down fats
D. To regulate pH levels
Question 14
A 40-year-old woman presents with symptoms of osteoporosis. Her bone mineral density (BMD) is 0.8 g/cm^2. Which of the following is the most likely cause of her condition?
A. Postmenopausal osteoporosis
B. Primary osteoporosis
C. Secondary osteoporosis
D. Osteomalacia
Question 15
A cell is placed in a solution with a pH of 5.5. If the cell membrane has a permeability coefficient of 0.01 cm/s, what is the rate of diffusion of H+ ions into the cell?
A. 0.05
B. 0.01
C. 0.005
D. 0.001

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