POST UTME DELSU 2018 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 2.5-metre tall person is s\tanding 15 metres away from a 5-metre tall tree. If the angle of elevation of the top of the tree from the person's eye level is 60°, what is the angle of elevation of the top of the tree from the ground?
A. 30°
B. 45°
C. 60°
D. 75°
Question 2
In a population of Drosophila melanogaster, the frequency of the recessive allele 'r' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the dominant allele 'R'?
A. 0.8
B. 0.6
C. 0.4
D. 0.2
Question 3
A plant with the genotype 'AaBb' is crossed with a plant with the genotype 'AaBb'. What is the probability that the offspring will have the genotype 'AABB'?
A. 0.25
B. 0.5
C. 0.75
D. 1.0
Question 4
A 5.0 g sample of a compound is analyzed by combustion analysis. The sample is found to contain 3.2 g of carbon and 1.8 g of hydrogen. What is the empirical formula of the compound?
A. CH2O
B. C2H4O
C. C3H6O
D. C4H8O
Question 5
Asexual reproduction in bacteria involves the process of
A. Binary fission
B. Mitosis
C. Meiosis
D. Budding
Question 6
A diagram of a plant cell is shown below. Identify the part labeled 'A'.
A. Mitochondria
B. Nucleus
C. Cell wall
D. Plastid
Question 7
A population of fruit flies is exposed to a toxic subs\tance that kills 20% of the population. What is the expected change in the population's allele frequency for the gene that codes for resis\tance to the toxin?
A. Increase
B. Decrease
C. No change
D. Stable
Question 8
A diagram of the human kidney is shown below. What is the primary function of the renal corpuscle in the nephron?
A. To filter the blood
B. To regulate blood pressure
C. To produce urine
D. To absorb nutrients
Question 9
A diagram of the human circulatory system is shown below. Which of the following structures is responsible for the regulation of blood pressure?
A. The heart
B. The arteries
C. The capillaries
D. The veins
Question 10
The process of mitosis results in the production of two daughter cells that are genetically identical to the parent cell. Which of the following is a characteristic of the daughter cells produced during mitosis?
A. They have the same number of chromosomes as the parent cell
B. They have half the number of chromosomes as the parent cell
C. They have a mix of paternal and maternal chromosomes
D. They have a different ploidy level than the parent cell
Question 11
The process of excretion in humans involves the removal of waste products from the body through the
A. Kidneys
B. Liver
C. Lungs
D. Skin
Question 12
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 13
A 2.5 L flask contains 0.5 mol of an ideal gas at 298 K. If 1.5 mol of the gas is added to the flask, what is the new pressure?
A. 1.5 atm
B. 2.0 atm
C. 2.5 atm
D. 3.0 atm
Question 14
A diagram of the human digestive system is shown below. Which of the following structures is responsible for the absorption of nutrients?
A. The stomach
B. The small intestine
C. The pancreas
D. The liver
Question 15
In a population of 1000 bacteria, 80% are susceptible to a particular antibiotic, 15% are resis\tant, and the remaining 5% are in a latent state. If 200 bacteria are exposed to the antibiotic, what is the expected number of bacteria that will be killed?
A. 80
B. 120
C. 160
D. 200

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