POST UTME UNIPORT 2019 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A diagram of the human brain is shown below.
A. The cerebral cortex
B. The cerebellum
C. The brainstem
D. The spinal cord
Question 2
A plant with the genotype 'Rr' is crossed with a plant with the genotype 'RR'. What is the probability that the offspring will have the genotype 'rr'?
A. 0.25
B. 0.5
C. 0.75
D. 0.9
Question 3
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. 0.16
D. 0.04
Question 4
A diagram of a human circulatory system is shown below. What is the function of the heart?
A. Pumping of blood throughout the body
B. Regulation of body temperature
C. Production of red blood cells
D. Filtering of waste products from the blood
Question 5
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. 0.64
B. 0.36
C. 0.48
D. 0.16
Question 6
In a population of Drosophila melanogaster, the frequency of the recessive allele 'b' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'BB'?
A. 0.36
B. 0.64
C. 0.72
D. 0.84
Question 7
A diagram of a plant's xylem and phloem tissues is shown below. What is the function of the xylem tissue?
A. Transport of water and minerals from roots to leaves
B. Transport of sugars and amino acids from leaves to roots
C. Support and storage of plant cells
D. Protection of plant cells from pathogens
Question 8
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 9
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 10
A diagram of the human circulatory system is shown below. What is the function of the part labeled 'E'?
A. To pump blood from the heart to the arteries
B. To conduct blood from the arteries to the capillaries
C. To exchange oxygen and carbon dioxide
D. To return deoxygenated blood to the heart
Question 11
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 12
A researcher is studying the effect of pH on the activity of the enzyme lactase. Which of the following statements best describes the relationship between pH and enzyme activity?
A. Enzyme activity increases with increa\sing pH
B. Enzyme activity decreases with increa\sing pH
C. Enzyme activity remains cons\tant over a wide pH range
D. Enzyme activity is unaffected by pH
Question 13
A person has a disease that is caused by a virus. If the person's immune system is unable to fight off the virus, what is the most likely outcome?
A. The person will recover
B. The person will die
C. The person will develop a chronic illness
D. The person will develop a rare disease
Question 14
A person is s\tanding 10 m away from a mirror. If the mirror is a concave mirror with a focal length of -0.5 m, what is the image dis\tance?
A. -5.0 m
B. -10.0 m
C. -15.0 m
D. -20.0 m
Question 15
A 10-year-old boy is diagnosed with a rare genetic disorder that affects the production of the protein dystrophin. Which of the following is a likely consequence of this disorder?
A. Muscle weakness
B. Cardiac arrhythmia
C. Cognitive impairment
D. Seizure disorder

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