POST UTME UNIBEN 2018 Biology | Objective

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Question 1
A patient is diagnosed with a bacterial infection. Which of the following is a characteristic feature of bacterial infections?
A. The presence of a viral culture in the patient's sputum
B. The presence of a bacterial culture in the patient's sputum
C. The presence of a fungal culture in the patient's sputum
D. The absence of a culture in the patient's sputum
Question 2
Which of the following is an example of a tissue that is composed of multiple cell types?
A. Epithelial tissue
B. Connective tissue
C. Muscle tissue
D. Nervous tissue
Question 3
The process of photosynthesis in plants involves the conversion of light energy into chemical energy in the form of which of the following?
A. Glu\cose and oxygen
B. Starch and carbon dioxide
C. Proteins and water
D. Fats and nitrogen
Question 4
Which of the following is a characteristic of the sense organ responsible for detecting sound waves?
A. It is sensitive to changes in air pressure
B. It is sensitive to vibrations in the air
C. It is sensitive to changes in temperature
D. It is sensitive to changes in humidity
Question 5
In the context of tissue organization, what is the primary function of the basement membrane?
A. To provide structural support to cells
B. To facilitate cell-to-cell communication
C. To regulate the movement of subs\tances between cells
D. To provide a barrier against pathogens
Question 6
The process of respiration in cells involves the breakdown of glu\cose to produce which of the following?
A. ATP and water
B. Glu\cose and oxygen
C. Carbon dioxide and water
D. Starch and nitrogen
Question 7
What is the term for the process by which an organism's cells become specialized to perform specific functions?
A. Differentiation
B. Mitosis
C. Meiosis
D. Osmosis
Question 8
What is the primary function of the xylem in plants?
A. Transport of water and minerals
B. Transport of sugars and amino acids
C. Storage of nutrients
D. Regulation of stomatal aperture
Question 9
A researcher is studying the effect of light on plant growth. Which of the following wavelengths of light is most beneficial for photosynthesis?
A. Blue light \( 450-495 nm \)
B. Red light \( 600-700 nm \)
C. Green light \( 520-560 nm \)
D. Ultraviolet light \( 100-400 nm \)
Question 10
What is the term for the process by which an organism grows and develops from a \single cell?
A. Embryogenesis
B. Organogenesis
C. Tissue formation
D. Cell differentiation
Question 11
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 dominant allele 'A'?
A. 0.8
B. 0.6
C. 0.4
D. 0.2
Question 12
A patient is diagnosed with a disease caused by a virus that has a high mutation rate. Which of the following is a consequence of this high mutation rate?
A. Increased virulence
B. Decreased transmissibility
C. Increased antigenic variation
D. Reduced pathogenicity
Question 13
A diagram of a circuit is shown below. What is the value of the current flowing through the circuit?
A. 2A
B. 3A
C. 4A
D. 5A
Question 14
A researcher is studying the structure of a cell membrane. Which of the following is a characteristic feature of cell membranes?
A. The presence of a nucleus
B. The presence of phospholipids
C. The presence of proteins
D. The absence of a membrane
Question 15
The process of mitosis in eukaryotic cells involves the separation of chromosomes into which of the following?
A. Two identical daughter cells
B. Two identical daughter nuclei
C. One daughter cell and one daughter nucleus
D. One daughter nucleus and one daughter cell

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