POST UTME BABCOCK UNIVERSITY 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the process of osmoregulation, what is the primary mechanism by which the kidneys regulate the concentration of ions in the blood?
A. Active transport of ions across the renal tubules
B. Passive diffusion of ions through the renal tubules
C. Excretion of excess ions in the urine
D. Reabsorption of ions from the filtrate
Question 2
The process of excretion in humans involves the removal of waste products from the body. Which of the following organs is responsible for filtering waste from the blood?
A. Liver
B. Kidneys
C. Lungs
D. Skin
Question 3
A 35-year-old female presents with symptoms of fever, chills, and fatigue. Her blood test reveals a high white blood cell count. Which of the following conditions is most likely responsible for this patient's symptoms?
A. Bacterial sepsis
B. Viral sepsis
C. Fungal sepsis
D. Parasitic sepsis
Question 4
A 40-year-old female presents with symptoms of fatigue, weakness, and shortness of breath. Her blood test reveals a low hemoglobin level. Which of the following conditions is most likely responsible for this patient's symptoms?
A. Iron deficiency anemia
B. Vitamin B12 deficiency anemia
C. Folate deficiency anemia
D. Thalassemia
Question 5
A 0.5 M solution of glu\cose (C6H12O6) is prepared by dissolving 18 g of glu\cose in 1 L of water. What is the molarity of the solution?
A. 0.25 M
B. 0.5 M
C. 1.0 M
D. 1.5 M
Question 6
A patient with a history of recurrent urinary tract infections is diagnosed with a condition characterized by the presence of a specific type of bacteria in the urine. Which of the following bacteria is most likely responsible for this condition?
A. Escherichia coli
B. Staphylococcus aureus
C. Pseudomonas aeruginosa
D. Klebsiella pneumoniae
Question 7
In a study on the effect of pH on enzyme activity, the following data were collected:
A. pH 7
B. pH 9
C. pH 11
D. pH 13
Question 8
In a eukaryotic cell, what is the primary function of the Golgi apparatus?
A. Protein synthesis
B. Cell signaling
C. Lipid modification
D. Protein transport
Question 9
A 2.5 L flask contains 1.5 mol of an ideal gas at 27°C. If 1.0 mol of the gas is removed, what is the new pressure?
A. 1.5 atm
B. 2.0 atm
C. 2.5 atm
D. 3.0 atm
Question 10
In a population of Drosophila melanogaster, the frequency of the recessive allele 'r' is 0.2. If the population size is 1000, what is the expected number of homozygous recessive individuals?
A. 160
B. 200
C. 240
D. 280
Question 11
In the xylem transport system, what is the primary function of the xylem parenchyma cells?
A. Storage of water and nutrients
B. Transport of water and minerals
C. Production of hormones
D. Regulation of water potential
Question 12
The diagram below shows the structure of a human eye. Which of the following is a function of the retina?
A. To focus light
B. To detect light
C. To produce tears
D. To regulate pupil size
Question 13
Which of the following microorganisms is responsible for the production of botulism?
A. Escherichia coli
B. Staphylococcus aureus
C. Clostridium botulinum
D. Salmonella typhi
Question 14
A plant cell has a cell wall, a large central vacuole, and a small amount of cytoplasm. What is the primary function of the cell wall?
A. to provide structural support
B. to regulate water balance
C. to synthesize proteins
D. to store genetic information
Question 15
A 30-year-old male presents with symptoms of malabsorption, including diarrhea and weight loss. His stool test reveals the presence of a specific enzyme deficiency. Which of the following enzymes is most likely deficient in this patient?
A. Lactase
B. Sucrase
C. Maltase
D. Amylase

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: