POST UTME COAL CITY UNIVERSITY 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A population of rabbits is growing at a rate of 20% per year. If the population is currently 1000 rabbits, what will be the population after 5 years?
A. 1000
B. 2000
C. 3185.94
D. 5000
Question 2
A researcher is studying the effect of pH on the activity of the enzyme catalase. If the enzyme is most active at a pH of 7.0, what can be concluded about the enzyme's optimal pH?
A. The enzyme is most active at a pH of 7.0.
B. The enzyme is least active at a pH of 7.0.
C. The enzyme's optimal pH is between 6.0 and 8.0.
D. The enzyme's optimal pH is between 4.0 and 6.0.
Question 3
What is the process by which cells divide to produce two daughter cells?
A. Mitosis
B. Meiosis
C. Binary fission
D. Endosymbiosis
Question 4
In a tropical rainforest, the nutrient cycle is primarily driven by the decomposition of organic matter by which of the following organisms?
A. Fungi
B. Bacteria
C. Protozoa
D. Rotifers
Question 5
In the context of cell division, what is the primary function of the centrioles during the prophase stage of mitosis?
A. To form the spindle fibers
B. To replicate the DNA
C. To condense the chromosomes
D. To form the nuclear envelope
Question 6
A diagram of a human circulatory system is shown below. Which of the following is the primary function of the heart?
A. Pumping blood throughout the body
B. Filtering waste from the blood
C. Regulating the body's temperature
D. Producing red blood cells
Question 7
A 5.0 g sample of a subs\tance is dissolved in 100 mL of water. What is the molarity of the solution?
A. 0.05 M
B. 0.1 M
C. 0.5 M
D. 1.0 M
Question 8
A microorganism is placed in a nutrient-rich medium. Which of the following will occur?
A. The microorganism will die due to lack of nutrients
B. The microorganism will grow and multiply
C. The microorganism will remain unchanged
D. The microorganism will be destroyed by the medium
Question 9
A 2.5 L flask contains 1.5 mol of an ideal gas at 27°C. If the gas is heated to 127°C at cons\tant volume, what is the new pressure?
A. 2.5 atm
B. 3.5 atm
C. 4.5 atm
D. 5.5 atm
Question 10
A patient has a blood glu\cose level of 250 mg/dL. What is the likely cause of this condition?
A. Diabetes Mellitus
B. Hypoglycemia
C. Pancreatitis
D. Gastroenteritis
Question 11
A diagram of the human eye is shown below. Which part of the eye is responsible for focu\sing light onto the retina?
A. Cornea
B. Iris
C. Lens
D. Retina
Question 12
A diagram of a plant's xylem and phloem is shown below. Which of the following is the primary function of the xylem?
A. Transporting water and minerals from the roots to the leaves
B. Transporting sugars and other organic compounds from the leaves to the rest of the plant
C. Storing water and nutrients in the plant
D. Regulating the plant's temperature
Question 13
A 2.0 M solution of NaOH is mixed with a 1.0 M solution of HCl. What is the pH of the resulting solution?
A. 1
B. 2
C. 3
D. 4
Question 14
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. 1.0
Question 15
A species of plant has a photosynthetic rate of 10 mg CO2/m^2/s. If the plant is exposed to light for 8 hours a day, what is the total amount of CO2 fixed by the plant per day?
A. 12000
B. 24000
C. 38400
D. 48000

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