POST UTME UNIOSUN 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In a eukaryotic cell, the process of mitosis is initiated by the breakdown of the nuclear envelope, resulting in the release of the chromosomes into the cytoplasm. Which stage of mitosis is characterized by the condensation of chromosomes and the formation of the spindle apparatus?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Question 2
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 homozygous dominant genotype 'AA'?
A. 0.36
B. 0.64
C. 0.72
D. 0.84
Question 3
A patient is diagnosed with a viral infection caused by Influenza virus. The treatment of choice for this infection is
A. Oseltamivir
B. Ribavirin
C. Zanamivir
D. Amantadine
Question 4
In a sample of 100 bacteria, 20 are resis\tant to a certain antibiotic. If a random sample of 10 bacteria is taken from the population, what is the probability that the sample will contain at least 2 bacteria that are resis\tant to the antibiotic?
A. 0.2
B. 0.3
C. 0.4
D. 0.5
Question 5
A patient is diagnosed with a viral infection that is characterized by the production of a specific type of antibody. Which of the following is a likely type of antibody produced in response to this infection?
A. IgA
B. IgG
C. IgM
D. IgE
Question 6
A person is experiencing a severe case of dehydration. Which of the following is a primary symptom of this condition?
A. Fatigue
B. Headache
C. Dark urine
D. All of the above
Question 7
A species of bird is classified as a member of the class Aves. Which of the following characteristics is a key feature of this classification?
A. Feathers
B. Wings
C. Beak
D. All of the above
Question 8
In the context of evolutionary theory, what is the primary mechanism by which genetic drift can lead to the fixation of a deleterious allele?
A. Genetic hitchhiking
B. Bottleneck effect
C. Founder effect
D. Genetic drift
Question 9
In the context of hormonal coordination, which of the following is a characteristic of a negative feedback mechanism?
A. Increased hormone production
B. Decreased hormone production
C. No change in hormone production
D. Increased hormone secretion
Question 10
A researcher is studying the effect of pH on the growth of Escherichia coli. The graph below shows the growth rate of the bacteria at different pH levels. What is the pH level at which the growth rate is maximum?
A. 6.5
B. 7.0
C. 7.5
D. 8.0
Question 11
A researcher is studying the effect of temperature on the growth of Saccharomyces cerevisiae. The graph below shows the growth rate of the yeast at different temperatures. What is the temperature at which the growth rate is maximum?
A. 25°C
B. 30°C
C. 35°C
D. 40°C
Question 12
A 30-year-old woman is diagnosed with a type of anemia that is caused by a deficiency of vitamin B12. Which of the following is a characteristic of this type of anemia?
A. Macrocytic anemia
B. Microcytic anemia
C. Normocytic anemia
D. Sideroblastic anemia
Question 13
A 30-year-old woman is diagnosed with a rare genetic disorder characterized by the inability to produce melanin. Which of the following is a likely consequence of this disorder?
A. Increased risk of skin cancer
B. Impaired cognitive function
C. Delayed growth and development
D. Albinism
Question 14
A 40-year-old man is diagnosed with a type of cancer that is caused by a mutation in the KRAS gene. Which of the following is a characteristic of this type of cancer?
A. Increased risk of metastasis
B. Resis\tance to chemotherapy
C. Increased risk of secondary cancers
D. Increased risk of genetic mutations
Question 15
A diagram of the human nervous system is shown below. What is the primary function of the cerebellum?
A. Control of voluntary movements
B. Regulation of body temperature
C. Proces\sing of sensory information
D. Production of hormones

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