POST UTME BABCOCK UNIVERSITY 2019 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In a tropical rainforest, the rate of photosynthesis is higher than in a temperate rainforest due to the presence of more
A. CO2
B. O2
C. light intensity
D. temperature
Question 2
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 3
The human body's nervous system is responsible for controlling and coordinating the body's functions. Which of the following is a type of neuron?
A. Motor neuron
B. Sensory neuron
C. Interneuron
D. Glial cell
Question 4
A diagram of a simple circuit is shown below. What is the function of the resistor labeled 'R1'?
A. To reduce the voltage across the circuit.
B. To increase the current through the circuit.
C. To decrease the resis\tance in the circuit.
D. To provide a path for the current to flow.
Question 5
A 30-year-old female presents with symptoms of fatigue, weakness, and shortness of breath. Her complete blood count (CBC) shows a hemoglobin level of 8 g/dL. What is the primary cause of her anemia?
A. Iron deficiency
B. Vitamin B12 deficiency
C. Folate deficiency
D. Sickle cell disease
Question 6
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 7
A cell is placed in a solution with a pH of 5.5. What is the concentration of hydrogen ions in the solution?
A. 10^{-5.5}
B. 10^{-6.5}
C. 10^{-7.5}
D. 10^{-8.5}
Question 8
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 9
The process of excretion in humans involves the removal of waste products from the body through the
A. kidneys
B. liver
C. pancreas
D. spleen
Question 10
The diagram below shows the structure of a mitochondrion. Which of the following is the function of the cristae?
A. To increase the surface area for respiration
B. To increase the surface area for photosynthesis
C. To increase the surface area for protein synthesis
D. To increase the surface area for cell division
Question 11
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 12
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 13
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 14
A 25-year-old male patient presents with symptoms of confusion, agitation, and a fever. Laboratory tests reveal the presence of a toxin in the serum. Which of the following types of bacteria is most likely responsible for this patient's symptoms?
A. Staphylococcus aureus
B. Escherichia coli
C. Pseudomonas aeruginosa
D. Clostridium te\tani
Question 15
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

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