POST UTME ELIZADE UNIVERSITY 2017 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A patient with a history of tuberculosis is diagnosed with a new case of tuberculosis. Which of the following is the most likely cause of the new case?
A. Reactivation of latent tuberculosis
B. Exogenous reinfection
C. Genetic predisposition
D. Environmental factors
Question 2
The discovery of the structure of DNA by James Watson and Francis Crick is an example of
A. The Scientific Method
B. The Process of Elimination
C. The Double Helix Model
D. The Theory of Evolution
Question 3
A bio\logist is studying the structure of a plant cell. Which of the following organelles is responsible for photosynthesis?
A. Mitochondria
B. Chloroplast
C. Vacuole
D. Nucleus
Question 4
In the context of cell division, what is the primary function of the centrioles in animal cells?
A. To organize the mitotic spindle
B. To synthesize the nuclear envelope
C. To form the kinetochore
D. To regulate the cell cycle
Question 5
A diagram of the human brain is shown below. Which part of the brain is responsible for regulating body temperature?
A. Hypothalamus
B. Cerebellum
C. Pons
D. Medulla oblongata
Question 6
A researcher is studying the effects of a new medication on the respiratory system. Which of the following types of cells would be most affected by the medication?
A. Alveolar macrophages
B. Bronchial epithelial cells
C. Pulmonary capillary \endothelial cells
D. Smooth muscle cells
Question 7
A diagram of the human eye is shown below. What is the primary function of the lens?
A. To focus light on the retina
B. To detect changes in light intensity
C. To regulate the amount of light entering the eye
D. To produce tears
Question 8
A species of animal is classified as belonging to the phylum Chordata. Which of the following characteristics is most likely to be true about this species?
A. It has a notochord at some stage in its development
B. It has a body cavity with a fluid called lymph
C. It has a true coelom
D. It has a pair of gill slits
Question 9
A geneticist is studying the inheri\tance of a particular trait in a family. The trait is determined by a \single gene with two alleles: A and a. The genotype of the parents is AA and aa. What is the probability that their offspring will have the genotype Aa?
A. 0.25
B. 0.5
C. 0.75
D. 0.9
Question 10
A researcher is studying the effects of light intensity on plant growth. Which of the following types of tissues would be most affected by changes in light intensity?
A. Parenchyma
B. Collenchyma
C. Sclerenchyma
D. Xylem
Question 11
In the process of cellular respiration, what is the primary function of the electron transport chain?
A. To generate ATP through substrate-level phosphorylation
B. To pump protons across the mitochondrial inner membrane
C. To produce NADH and FADH2
D. To reduce oxygen to water
Question 12
A researcher is studying the process of osmoregulation in a desert-dwelling organism. Which of the following would be the most likely mechanism for this organism to conserve water?
A. Producing a high concentration of urea
B. Concentrating the urine through the kidneys
C. Excreting excess water through the skin
D. Producing a high concentration of glu\cose
Question 13
A geneticist is studying the inheri\tance of a particular trait in a population. Which of the following types of genetic variation would be most likely to result in a change in the frequency of the trait?
A. Mutation
B. Gene flow
C. Genetic drift
D. Natural selection
Question 14
The sense organ responsible for detecting changes in pressure is the
A. Vestibule
B. Cochlea
C. Lateral Line
D. Eustachian Tube
Question 15
A population of Drosophila melanogaster is being studied for its genetic variation. Which of the following genetic markers would be most useful for identifying the genetic variation in this population?
A. A dominant allele of the white eye gene
B. A recessive allele of the bar eye gene
C. A mutation in the forked gene
D. A deletion in the vestigial gene

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