POST UTME BABCOCK UNIVERSITY 2021 Biology | Objective

Are you preparing for POST UTME BABCOCK UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2021 Biology (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1
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?
Correct A. 160
B. 200
C. 240
D. 280

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 2
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?
Correct A. 0.4 M
B. 0.5 M
C. 0.6 M
D. 0.7 M

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 3
In a study on the effect of pH on enzyme activity, the following data were collected:
A. pH 7
Correct B. pH 9
C. pH 11
D. pH 13

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 4
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
Correct C. 9
D. 10

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 5
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?
Correct A. 0.4 M
B. 0.5 M
C. 0.6 M
D. 0.7 M

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 6
In the xylem transport system, what is the primary function of the xylem parenchyma cells?
Correct A. Storage of water and nutrients
B. Transport of water and minerals
C. Production of hormones
D. Regulation of water potential

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 7
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
Correct D. Aldosterone

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 8
A microorganism is isolated from a patient's blood sample. Which of the following characteristics is most likely to indicate that the microorganism is a pathogen?
A. Ability to form spores
Correct B. Ability to produce toxins
C. Ability to cause inflammation
D. Ability to form biofilms

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 9
A plant is grown in a controlled environment with a cons\tant temperature and humidity. Which of the following factors is most likely to limit the plant's growth?
A. Light intensity
B. Water availability
C. Nutrient availability
Correct D. CO2 concentration

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 10
A patient is diagnosed with a kidney disease. Which of the following organs is responsible for regulating the amount of water in the body?
A. Liver
Correct B. Kidneys
C. Pancreas
D. Adrenal glands

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 11
In a eukaryotic cell, what is the primary function of the Golgi apparatus?
A. Protein synthesis
B. Cell signaling
C. Lipid modification
Correct D. Protein transport

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 12
Which of the following microorganisms is responsible for the production of botulism?
A. Escherichia coli
B. Staphylococcus aureus
Correct C. Clostridium botulinum
D. Salmonella typhi

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 13
In the human nervous system, what is the primary function of the cerebellum?
Correct A. Motor control
B. Sensory integration
C. Cognitive proces\sing
D. Emotional regulation

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 14
What is the primary mechanism of action of insulin in the human body?
Correct A. Increased glu\cose uptake in muscles
B. Decreased glu\cose production in liver
C. Increased glu\cose release from glycogen
D. Increased lipolysis in adipose tissue

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 15
In a photosynthetic plant, what is the primary function of the stomata?
Correct A. Gas exchange
B. Water absorption
C. Mineral uptake
D. Light absorption

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 16
The diagram below shows the structure of a prokaryotic cell. Which of the following is NOT a characteristic of prokaryotic cells?
Correct A. They have a true nucleus
B. They have a cell wall
C. They have a large amount of cytoplasm
D. They have a large amount of DNA

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 17
The process of cellular respiration can be represented by the equation: \( C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O + ATP \). What is the role of oxygen in this equation?
Correct A. It is a reac\tant
B. It is a product
C. It is a catalyst
D. It is a byproduct

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 18
The diagram below shows the structure of a plant root. Which of the following is a function of the root hair?
Correct A. To absorb water and minerals
B. To transport water and minerals
C. To store food
D. To support the plant

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 19
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
Correct B. Kidneys
C. Lungs
D. Skin

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 20
The diagram below shows the structure of a human eye. Which of the following is a function of the retina?
A. To focus light
Correct B. To detect light
C. To produce tears
D. To regulate pupil size

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 21
In the process of osmoregulation, what is the primary mechanism by which the kidneys regulate the concentration of ions in the blood?
Correct 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

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 22
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?
Correct A. Escherichia coli
B. Staphylococcus aureus
C. Pseudomonas aeruginosa
D. Klebsiella pneumoniae

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 23
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?
Correct A. Lactase
B. Sucrase
C. Maltase
D. Amylase

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 24
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?
Correct A. Iron deficiency anemia
B. Vitamin B12 deficiency anemia
C. Folate deficiency anemia
D. Thalassemia

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 25
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?
Correct A. Pancreatic adenocarcinoma
B. Pancreatic neuro\endocrine tumor
C. Pancreatic metastasis
D. Pancreatic pseudocyst

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

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:
Chat with Support