POST UTME BSU 2020 Biology | Objective

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Question 1
The Δπελοτερ protein is a type of Δπελοτεργενε \( Pre-Telophase kinase \). Which of the following is a characteristic of the Δπελοτεργενε protein?
A. It phosphorylates histone proteins
B. It is a component of the nuclear envelope
C. It is a transcription factor
D. It is a protein kinase
Question 2
Which of the following microorganisms is responsible for cau\sing tuberculosis?
A. Bacillus anthracis
B. Mycobacterium tuberculosis
C. Escherichia coli
D. Staphylococcus aureus
Question 3
A plant grows in a nutrient-poor soil. Which of the following is a likely adaptation of the plant?
A. Deep roots to access water
B. Small leaves to reduce water loss
C. Thick cuticle to prevent water loss
D. Large leaves to increase photosynthesis
Question 4
The Δπελοτερ protein is a type of Δπελοτεργενε \( Pre-Telophase kinase \). Which of the following is a characteristic of the Δπελοτεργενε protein?
A. It phosphorylates histone proteins
B. It is a component of the nuclear envelope
C. It is a transcription factor
D. It is a protein kinase
Question 5
A plant with the genotype 'Tt' is crossed with a plant with the genotype 'tt'. What is the probability that the offspring will have the genotype 'TT'?
A. 0.25
B. 0.5
C. 0.75
D. 0.9
Question 6
The process of respiration involves the breakdown of glu\cose to produce energy for the body. Which of the following is a byproduct of the citric acid cycle?
A. ATP
B. NADH
C. FADH2
D. Pyruvate
Question 7
A diagram of the human respiratory system is shown below. Which of the following is a function of the alveoli?
A. Exchange of oxygen and carbon dioxide
B. Regulation of body temperature
C. Production of red blood cells
D. Storage of oxygen
Question 8
A plant with the genotype 'Tt' is crossed with a plant with the genotype 'tt'. What is the probability that the offspring will have the genotype 'TT'?
A. 0.25
B. 0.5
C. 0.75
D. 1.0
Question 9
The Hardy-Weinberg principle states that allele and genotype frequencies in a population will remain cons\tant from generation to generation in the absence of other evolutionary influences. Which of the following is a necessary condition for the Hardy-Weinberg principle to hold?
A. Random mating
B. No mutation
C. No gene flow
D. No natural selection
Question 10
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?
A. 0.36
B. 0.64
C. 0.16
D. 0.84
Question 11
The Δπελοτερ protein is a type of Δπελοτεργενε \( Pre-Telophase kinase \). Which of the following is a characteristic of the Δπελοτεργενε protein?
A. It phosphorylates histone proteins
B. It is a component of the nuclear envelope
C. It is a transcription factor
D. It is a protein kinase
Question 12
A scientist is studying the effects of a new pesticide on a population of insects. The pesticide is found to have a 90% mortality rate on the insects. What is the expected ratio of dead insects to live insects after one application of the pesticide?
A. 1:10
B. 1:9
C. 1:8
D. 1:7
Question 13
A diagram of a plant's xylem and phloem tissues is shown below. Which of the following statements is true about the xylem tissue?
A. It transports water and minerals from the roots to the leaves.
B. It transports sugars and other organic compounds from the leaves to the rest of the plant.
C. It is responsible for photosynthesis.
D. It is a type of tissue found only in animals.
Question 14
A cell is in the process of dividing and has reached the anaphase stage. Which of the following is a key feature of this stage?
A. The sister chromatids are moving towards the poles
B. The centromeres are separating
C. The nuclear envelope is reforming
D. The cytoplasm is dividing
Question 15
A patient has a kidney stone that is cau\sing severe pain. Which of the following is a likely cause of the stone?
A. A diet high in oxalate
B. A diet high in calcium
C. A genetic disorder
D. A bacterial infection

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