POST UTME UNILORIN 2020 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the context of respiration, what is the primary function of the mitochondria?
A. To synthesize ATP from glu\cose
B. To break down glu\cose to produce energy
C. To regulate the pH of the blood
D. To transport oxygen to the cells
Question 2
A 2-year-old child is diagnosed with a rare genetic disorder characterized by the inability to synthesize the amino acid phenylalanine. Which of the following enzymes is deficient in this disorder?
A. Phenylalanine hydroxylase
B. Tyro\sine aminotransferase
C. Dihydropteridine reductase
D. GTP cyclohydrolase
Question 3
In the context of eco\logy, what is the primary function of a keystone species in a given biome?
A. To occupy a unique eco\logical niche
B. To regulate the population of other species
C. To facilitate the process of nutrient cycling
D. To maintain the structural complexity of the e\cosystem
Question 4
A researcher is studying the effect of a new medication on blood pressure. The data shows that the blood pressure decreases significantly after taking the medication. What type of statistical analysis would be most appropriate for this study?
A. ANOVA
B. Regression Analysis
C. Paired T-Test
D. Indep\endent T-Test
Question 5
In a study on the effect of exercise on cardiovascular health, the researcher measured the heart rate of 20 participants before and after a 30-minute exercise session. The data shows a significant decrease in heart rate after the exercise. What type of statistical analysis would be most appropriate for this study?
A. ANOVA
B. Regression Analysis
C. Paired T-Test
D. Indep\endent T-Test
Question 6
In the xylem, what is the primary function of the tracheids?
A. Transport of water and minerals from the roots to the leaves
B. Production of sugars through photosynthesis
C. Storage of nutrients and water
D. Support and structure for the plant
Question 7
What is the term for the process by which plants grow and develop from a \single cell?
A. Mitosis
B. Meiosis
C. Apoptosis
D. Differentiation
Question 8
A diagram of the human respiratory system is shown below. Which part of the diagram is responsible for the exchange of oxygen and carbon dioxide?
A. The trachea
B. The diaphragm
C. The lungs
D. The bronchi
Question 9
In the context of cellular respiration, what is the primary function of the electron transport chain?
A. To generate ATP from NADH and FADH2
B. To regulate the cell cycle
C. To synthesize ATP from glu\cose
D. To break down glu\cose into pyruvate
Question 10
A diagram of the human eye is shown below. What is the primary function of the retina?
A. To detect light and transmit signals to the brain
B. To regulate the cell cycle
C. To synthesize ATP from glu\cose
D. To break down glu\cose into pyruvate
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. 0.64
B. 0.36
C. 0.16
D. 0.84
Question 12
Which of the following is an example of a sexual reproduction in animals?
A. Fertilization
B. Meiosis
C. Mitosis
D. Apoptosis
Question 13
A diagram of the human eye is shown below. Which part of the eye is responsible for detecting light?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 14
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 expected frequency of the homozygous dominant genotype 'AA'?
A. 0.16
B. 0.24
C. 0.36
D. 0.48
Question 15
A diagram of a simple harmonic motion is shown below. Identify the type of motion.
A. Simple Harmonic Motion
B. Damped Harmonic Motion
C. Forced Harmonic Motion
D. Oscillatory Motion

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