POST UTME OSUSTECH 2017 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A diagram of a plant cell is shown below. What is the function of the structure labeled 'X'?
A. photosynthesis
B. respiration
C. transpiration
D. osmoregulation
Question 2
In the xylem transport system, what is the primary function of the xylem parenchyma cells?
A. To regulate water potential
B. To store starch and other nutrients
C. To produce turgor pressure
D. To facilitate transpiration
Question 3
A 0.1 M solution of NaOH is mixed with a 0.2 M solution of HCl. What is the pH of the resulting solution?
A. 1
B. 2
C. 3
D. 4
Question 4
The gas exchange process that occurs in the lungs is known as
A. Respiration
B. Photosynthesis
C. Transpiration
D. Evaporation
Question 5
A 35-year-old woman presents with a 2-year history of progressive weakness, fatigue, and shortness of breath. Her physical examination reveals a pale complexion, a low-grade fever, and a palpable spleen. Which of the following is the most likely diagnosis?
A. Chronic myeloid leukemia
B. Chronic lymphocytic leukemia
C. Polycythemia vera
D. Myelodysplastic syndrome
Question 6
A 45-year-old man presents with a 5-year history of progressive difficulty swallowing, hoarseness, and shortness of breath. His physical examination reveals a palpable thyroid gland and a hoarse voice. Which of the following is the most likely diagnosis?
A. Papillary thyroid carcinoma
B. Follicular thyroid carcinoma
C. Medullary thyroid carcinoma
D. Anaplastic thyroid carcinoma
Question 7
A 2-year-old child is diagnosed with a rare genetic disorder that affects the kidneys and causes them to fail. Which of the following is a possible cause of this disorder?
A. Mutation in the HNF1B gene
B. Deletion of the WT1 gene
C. Inheri\tance of the APOL1 gene
D. Infection with the BK virus
Question 8
The diagram below shows a cross-section of a plant stem. Which of the following is a characteristic of the cells in the xylem?
A. Tracheids with thick cell walls
B. Vessel elements with thin cell walls
C. Parenchyma cells with large vacuoles
D. Collenchyma cells with pectin
Question 9
The process of mitosis is initiated by the replication of chromosomes, resulting in the formation of daughter cells. Which of the following is a characteristic of the products of mitosis?
A. Haploid cells with a reduced number of chromosomes
B. Diploid cells with a normal number of chromosomes
C. Tetrads with a normal number of chromosomes
D. Chromatids with a reduced number of chromosomes
Question 10
The process of asexual reproduction in which a new individual is produced from a \single parent cell is called?
A. mitosis
B. meiosis
C. binary fission
D. budding
Question 11
The process by which an organism's genetic information is passed from one generation to the next is known as
A. Genetic drift
B. Natural selection
C. Mutation
D. Heritability
Question 12
A 28-year-old woman presents with a 2-year history of progressive difficulty walking, weakness, and numbness in her legs. Her physical examination reveals a decreased reflexes and a positive Babinski sign. Which of the following is the most likely diagnosis?
A. Multiple sclerosis
B. Amyotrophic lateral sclerosis
C. Guillain-Barré syndrome
D. Transverse myelitis
Question 13
The process by which plants convert light energy from the sun into chemical energy in the form of glu\cose is known as
A. Photosynthesis
B. Respiration
C. Transpiration
D. Osmosis
Question 14
In the context of the human visual system, what is the primary function of the optic nerve?
A. To transmit visual information from the retina to the brain
B. To regulate the amount of light entering the eye
C. To focus light onto the retina
D. To detect changes in color
Question 15
The process of meiosis is initiated by the replication of chromosomes, resulting in the formation of tetrads. Which of the following is a characteristic of the products of meiosis?
A. Haploid cells with a reduced number of chromosomes
B. Diploid cells with a normal number of chromosomes
C. Tetrads with a normal number of chromosomes
D. Chromatids with a reduced number of chromosomes

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