POST UTME BABCOCK UNIVERSITY 2019 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the context of tissue organization, what is the primary function of the basement membrane?
A. To provide structural support to cells
B. To facilitate cell-to-cell communication
C. To regulate the movement of ions and molecules
D. To maintain tissue homeostasis
Question 2
A 20-year-old male patient presents with symptoms of fever, headache, and a rash. Laboratory tests reveal the presence of IgM antibodies against the virus. Which of the following viruses is most likely responsible for this patient's symptoms?
A. Rubeola virus
B. Rubella virus
C. Measles virus
D. Mumps virus
Question 3
A bio\logist is studying the classification of living organisms. She uses the following key to identify a species:
A. Kingdom: Animalia, Phylum: Chordata, Class: Mammalia, Order: Carnivora
B. Kingdom: Plantae, Phylum: Magnoliophyta, Class: Magnoliopsida, Order: Rosales
C. Kingdom: Fungi, Phylum: Ascomycota, Class: Dothideomycetes, Order: Capnodiales
D. Kingdom: Protista, Phylum: Ciliophora, Class: Ciliata, Order: Litostomatea
Question 4
In a population of 1000 individuals, the frequency of the dominant allele (A) is 0.6 and the frequency of the recessive allele (a) is 0.4. What is the expected frequency of the homozygous dominant genotype (AA)?
A. 0.36
B. 0.48
C. 0.52
D. 0.64
Question 5
A researcher is studying the effect of pH on the growth of E. coli. The researcher measures the growth of the bacteria at different pH levels and plots the data on a graph. Which of the following types of graphs would be most appropriate for this data?
A. Bar graph
B. Line graph
C. Scatter plot
D. Histogram
Question 6
A researcher is studying the effects of light on plant growth. She uses a controlled environment chamber to simulate different light intensities. What type of experiment is she conducting?
A. Causal
B. Correlational
C. Experimental
D. Descriptive
Question 7
A 35-year-old female patient presents with symptoms of fatigue, weight loss, and a palpable mass in the neck. Laboratory tests reveal the presence of a monoclonal protein in the serum. Which of the following types of cancer is most likely responsible for this patient's symptoms?
A. Multiple myeloma
B. Lymphoma
C. Leukemia
D. Thyroid cancer
Question 8
The Hardy-Weinberg principle states that the frequency of alleles in a population remains cons\tant from generation to generation in the absence of genetic drift, mutation, and gene flow. Which of the following is a consequence of the Hardy-Weinberg principle?
A. The frequency of alleles remains cons\tant
B. The frequency of alleles increases
C. The frequency of alleles decreases
D. The frequency of alleles remains cons\tant in the presence of genetic drift
Question 9
A diagram of a simple microscope is shown below. What is the function of the objective lens?
A. To magnify the image of the object.
B. To reduce the size of the image of the object.
C. To change the color of the image of the object.
D. To provide a path for the light to enter the microscope.
Question 10
A diagram shows a plant with a root system and a shoot system. Which part of the plant is responsible for photosynthesis?
A. A
B. B
C. C
D. D
Question 11
A scientist is studying the effect of pH on the growth of a certain type of bacteria. The bacteria grow best at a pH of 7.0, but the optimal pH for growth is between 6.5 and 7.5. If the pH of the growth medium is 6.0, what can the scientist expect to happen to the bacteria?
A. The bacteria will grow at a rate similar to that at pH 7.0.
B. The bacteria will grow at a slower rate than at pH 7.0.
C. The bacteria will not grow at all.
D. The bacteria will grow at a faster rate than at pH 7.0.
Question 12
What is the term for the process by which a microorganism becomes resis\tant to an antibiotic?
A. Antibiotic resis\tance
B. Antibiotic sensitivity
C. Bacterial mutation
D. Viral infection
Question 13
A 20-year-old male presents with symptoms of respiratory distress. His arterial blood gas (ABG) shows a pH of 7.35, PCO2 of 40 mmHg, and PO2 of 80 mmHg. What is the primary cause of his respiratory acidosis?
A. Hyperventilation
B. Hypoventilation
C. Asthma
D. Pneumonia
Question 14
In the process of osmoregulation, what is the primary mechanism by which the kidney regulates the concentration of ions in the blood?
A. Reabsorption of ions in the proximal convoluted tubule
B. Secretion of ions in the distal convoluted tubule
C. Reabsorption of ions in the loop of Henle
D. Excretion of ions in the collecting duct
Question 15
The diagram below shows a cross-section of a human eye. Identify the part labeled B.
A. cornea
B. lens
C. retina
D. sclera

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