POST UTME RSU 2025 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A cell is in the G2 phase of the cell cycle. Which of the following is a characteristic of this phase?
A. DNA replication occurs
B. Mitosis occurs
C. Growth and preparation for mitosis occur
D. Interphase occurs
Question 2
What is the primary function of the nervous system in an organism?
A. To regulate body temperature
B. To control movement
C. To transmit and process information
D. To produce hormones
Question 3
In a population of 1000 individuals, 70% are heterozygous for the ABO blood group gene, 20% are homozygous dominant for the gene, and 10% are homozygous recessive. If a random individual is chosen from this population, what is the probability that they will be type O?
A. 0.1
B. 0.2
C. 0.3
D. 0.4
Question 4
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 homozygous dominant genotype 'RR'?
A. 0.16
B. 0.64
C. 0.8
D. 0.96
Question 5
A patient is diagnosed with a disease caused by a mutation in the BRCA1 gene. The patient's symptoms include breast cancer, ovarian cancer, and a family history of cancer. Which of the following is the most likely cause of the patient's symptoms?
A. The patient has a viral infection
B. The patient has a bacterial infection
C. The patient has a genetic disorder
D. The patient has a fungal infection
Question 6
A researcher is studying the effect of pH on the growth of E. coli. She sets up three identical experiments with different pH levels: 5, 7, and 9. After 24 hours, she measures the growth of the bacteria in each experiment. Which of the following statements is true about the results?
A. The bacteria grew fastest at pH 5.
B. The bacteria grew fastest at pH 7.
C. The bacteria grew fastest at pH 9.
D. The bacteria grew equally well at all three pH levels.
Question 7
A researcher is studying the structure of a protein that is involved in the regulation of gene expression. The protein has a molecular weight of 60 kDa and is composed of 400 amino acids. What is the average molecular weight of each amino acid in the protein?
A. 150 Da
B. 170 Da
C. 190 Da
D. 210 Da
Question 8
A 2.0 L flask contains 1.0 mol of an ideal gas at 300 K. If 1.0 mol of an ideal gas is added to the flask at the same temperature, what is the new pressure of the gas mixture?
A. 2.0 atm
B. 4.0 atm
C. 6.0 atm
D. 8.0 atm
Question 9
A 2.0 L flask contains 1.0 mol of an ideal gas at 300 K. If the gas is expanded to 5.0 L, what is the new pressure of the gas?
A. 0.5 atm
B. 1.0 atm
C. 2.0 atm
D. 3.0 atm
Question 10
A 10.0 g sample of a compound is analyzed by combustion analysis and found to contain 6.0 g of carbon and 4.0 g of hydrogen. What is the empirical formula of the compound?
A. CH
B. C2H2
C. C2H4
D. C2H6
Question 11
A 5.0 L flask contains 2.0 mol of an ideal gas at 400 K. If the gas is compressed to 1.0 L, what is the new temperature of the gas?
A. 200 K
B. 400 K
C. 600 K
D. 800 K
Question 12
A diagram of a nervous system is shown below. What is the function of the structure labeled 'B'?
A. To transmit signals to other nerve cells
B. To synthesize neurotransmitters
C. To regulate muscle contraction
D. To store genetic information
Question 13
The process by which an organism's genetic information is passed from one generation to the next is known as
A. Mutation
B. Genetic Drift
C. Gene Flow
D. Heritability
Question 14
A patient is diagnosed with a viral infection caused by a strain of influenza virus. The patient's symptoms include fever, cough, and sore throat. Which of the following is the most likely cause of the patient's symptoms?
A. The patient has a bacterial infection
B. The patient has a fungal infection
C. The patient has a viral infection
D. The patient has a parasitic infection
Question 15
In the context of respiration, what is the term for the process by which oxygen is transported from the lungs to the body's cells?
A. Diffusion
B. Osmosis
C. Active transport
D. Oxygen delivery

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