POST UTME OSUSTECH 2023 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A species of animal has a unique characteristic where its body temperature remains cons\tant despite changes in the environment. What type of thermoregulation is this?
A. Endothermy
B. Ectothermy
C. Heterothermy
D. Poikilothermy
Question 2
A plant cell is placed in a solution with a high concentration of sugar. What will happen to the cell?
A. The cell will shrink due to water loss
B. The cell will swell due to water uptake
C. The cell will remain unchanged
D. The cell will undergo osmosis
Question 3
In the context of classification of living things, what is the primary function of the kingdom level?
A. To group organisms based on their genetic makeup
B. To categorize organisms based on their physical characteristics
C. To identify organisms based on their metabolic processes
D. To classify organisms based on their eco\logical niches
Question 4
A diagram of the human eye is shown below. Identify the part labeled 'A'.
A. Cornea
B. Iris
C. Retina
D. Lens
Question 5
A researcher is studying the process of digestion in the human body. Which of the following enzymes is responsible for breaking down proteins into smaller peptides?
A. Amylase
B. Lipase
C. Tryp\sin
D. Pep\sin
Question 6
A microorganism is isolated from a patient with a severe infection. The microorganism is found to be a gram-positive, catalase-negative bacterium. What is the most likely cause of the infection?
A. Staphylococcus aureus
B. Streptococcus pneumoniae
C. Escherichia coli
D. Pseudomonas aeruginosa
Question 7
In a closed e\cosystem, the rate of respiration in a population of rabbits is directly proportional to the square root of the population size. If the initial population size is 1000 and the rate of respiration is 10 units per day, what is the rate of respiration when the population size reaches 1600?
A. 6 units per day
B. 8 units per day
C. 12 units per day
D. 16 units per day
Question 8
A 35-year-old patient with chronic kidney disease is experiencing symptoms of uremia. Which of the following is a primary function of the kidneys that is impaired in this condition?
A. Regulating blood pressure
B. Maintaining electrolyte balance
C. Removing waste products from the blood
D. Producing hormones that stimulate red blood cell production
Question 9
A 2.0 g sample of a subs\tance is dissolved in 100 mL of water. If the osmotic pressure of the solution is 2.5 atm at 25°C, what is the molar mass of the subs\tance?
A. 50 g/mol
B. 75 g/mol
C. 100 g/mol
D. 125 g/mol
Question 10
A diagram of a plant cell is shown below. Identify the part labeled 'A'.
A. Mitochondria
B. Chloroplast
C. Nucleus
D. Vacuole
Question 11
A patient is experiencing symptoms of a genetic disorder. Which of the following is a type of genetic variation that can lead to the development of a genetic disorder?
A. Point mutation
B. Frameshift mutation
C. Chromosomal deletion
D. Gene duplication
Question 12
A 2.0 L flask contains 0.050 M NaCl at 25°C. If 0.100 M HCl is slowly added to the solution, what is the resulting concentration of NaCl?
A. 0.050 M
B. 0.075 M
C. 0.100 M
D. 0.125 M
Question 13
A population of 1000 individuals has a mean height of 170 cm and a s\tandard deviation of 10 cm. If a random sample of 50 individuals is taken, what is the probability that the sample mean height is greater than 175 cm?
A. 0.1
B. 0.2
C. 0.3
D. 0.4
Question 14
A bio\logist is studying the classification of living organisms. Which of the following is a characteristic of the kingdom Animalia?
A. Multicellularity
B. Cell wall presence
C. Heterotrophy
D. Photosynthesis
Question 15
The cell membrane is selectively permeable due to the presence of
A. Lipid bilayer
B. Protein channels and pumps
C. Carbohydrate molecules
D. Nucleic acids

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub: