POST UTME UNIPORT 2019 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The hormone insulin is secreted by which of the following cells?
A. Pancreatic \beta cells
B. Pancreatic \alpha cells
C. Islet cells
D. Gastric chief cells
Question 2
A 30-year-old male patient presents with symptoms of malabsorption, including diarrhea and weight loss. His stool examination reveals the presence of a parasite. Which of the following parasites is most likely responsible for his condition?
A. Giardia lamblia
B. Entamoeba histolytica
C. Ascaris lumbricoides
D. Trichuris trichiura
Question 3
The xylem tissue in plants is responsible for transporting?
A. Water and minerals from the roots to the leaves
B. Sugars and amino acids from the leaves to the roots
C. Hormones and other signaling molecules throughout the plant
D. Waste products from the leaves to the roots
Question 4
A diagram of the human respiratory system is shown below. What is the function of the part labeled 'D'?
A. To conduct air from the trachea to the bronchi
B. To regulate the amount of air entering the lungs
C. To exchange oxygen and carbon dioxide
D. To contract and relax to facilitate breathing
Question 5
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
Question 6
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 7
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. 0.16
D. 0.04
Question 8
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 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 a human eye is shown below. What is the function of the retina?
A. Detection of light and transmission of signals to the brain
B. Production of tears and lubrication of the eye
C. Regulation of the amount of light entering the eye
D. Protection of the eye from pathogens
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 homozygous dominant genotype 'AA'?
A. 0.36
B. 0.64
C. 0.16
D. 0.04
Question 12
A population of bacteria is growing exponentially. If the initial population is 100 and the population doubles every 2 hours, what is the population after 6 hours?
A. 1600
B. 3200
C. 6400
D. 12800
Question 13
A diagram of the human eye is shown below. What is the function of the part labeled 'C'?
A. To focus light onto the retina
B. To re\fract light entering the eye
C. To detect light and color
D. To regulate the amount of light entering the eye
Question 14
In the process of cellular respiration, what is the primary function of the electron transport chain?
A. To generate ATP through substrate-level phosphorylation
B. To generate ATP through oxidative phosphorylation
C. To produce NADH and FADH2
D. To reduce oxygen to water
Question 15
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

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