POST UTME BABCOCK UNIVERSITY 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 1.0 L flask contains 0.5 mol of an ideal gas at 25°C. If the gas is compressed to half its original volume, what is the new pressure?
A. 2.0 atm
B. 2.5 atm
C. 3.0 atm
D. 4.0 atm
Question 2
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 3
The diagram below shows the structure of a plant root. Which of the following is a function of the root hair?
A. To absorb water and minerals
B. To transport water and minerals
C. To store food
D. To support the plant
Question 4
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 5
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 6
A 2.5 L flask contains 0.5 M NaOH. If 20 mL of 1 M HCl is added to the solution, what is the resulting concentration of the solution?
A. 0.4 M
B. 0.5 M
C. 0.6 M
D. 0.7 M
Question 7
A 50 mL sample of a solution containing 0.1 M NaOH is titrated with 0.1 M HCl. What is the pH of the resulting solution after the addition of 20 mL of 0.1 M HCl?
A. 7
B. 8
C. 9
D. 10
Question 8
A patient is diagnosed with a hormonal imbalance. Which of the following hormones is responsible for regulating blood pressure?
A. Insulin
B. Glucagon
C. Adrenaline
D. Aldosterone
Question 9
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
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
A diagram of a plant cell is shown below. What is the function of the structure labeled 'A'?
A. To synthesize proteins
B. To store genetic information
C. To regulate gene expression
D. To transport materials across the cell membrane
Question 12
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 13
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 14
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 15
A 25-year-old male presents with symptoms of abdominal pain, nausea, and vomiting. His abdominal CT scan reveals a mass in the pancreas. Which of the following types of cancer is most likely responsible for this patient's symptoms?
A. Pancreatic adenocarcinoma
B. Pancreatic neuro\endocrine tumor
C. Pancreatic metastasis
D. Pancreatic pseudocyst

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