POST UTME UNIBEN 2018 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
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
Question 2
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 3
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 4
In genetics, 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 5
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 6
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 7
A researcher isolates a new species of bacteria that exhibits a unique mode of reproduction. Which of the following best describes the mode of reproduction of this bacterium?
A. Binary fission
B. Budding
C. Fragmentation
D. Spore formation
Question 8
In a population of 1000 individuals, 70% exhibit the dominant allele for brown eye color. If 20% of the population is heterozygous, what is the frequency of the recessive allele?
A. 0.15
B. 0.20
C. 0.25
D. 0.30
Question 9
Which of the following organs is responsible for the excretion of waste products from the body?
A. Kidneys
B. Liver
C. Lungs
D. Skin
Question 10
A plant with the genotype RrSs is crossed with a plant with the genotype rrSS. What is the probability that the offspring will exhibit the R allele?
A. 0.50
B. 0.60
C. 0.75
D. 0.90
Question 11
In a tropical rainforest e\cosystem, the primary consumers are primarily composed of which of the following groups?
A. Herbivorous insects and small mammals
B. Carnivorous birds and small mammals
C. Decomposers and detritivores
D. Fungi and lichens
Question 12
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 13
In a eukaryotic cell, the process of mitosis is initiated by the breakdown of the nuclear envelope. Which of the following structures is responsible for this breakdown?
A. Nuclear lamina
B. Nuclear envelope
C. Mitotic spindle
D. Centrioles
Question 14
A diagram of a plant cell is shown below. Which of the following structures is responsible for photosynthesis?
A. Mitochondria
B. Chloroplast
C. Endoplasmic reticulum
D. Golgi apparatus
Question 15
A tissue engineer is designing a scaffold for tissue regeneration. Which of the following types of scaffolds would be most suitable for bone tissue engineering?
A. Fibrous scaffold
B. Hydrogel scaffold
C. Ceramic scaffold
D. Polymer scaffold

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