POST UTME OAU 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The microorganism responsible for cau\sing tuberculosis is
A. Escherichia coli
B. Staphylococcus aureus
C. Mycobacterium tuberculosis
D. Salmonella typhi
Question 2
A 30-year-old woman has a body mass index (BMI) of 35. Which of the following is the most likely consequence of her obesity?
A. Type 2 diabetes
B. Hypertension
C. Sleep apnea
D. All of the above
Question 3
A plant has a genotype of BBCC. If the plant is crossed with a plant of genotype cc, what is the probability that the offspring will be homozygous recessive?
A. 0.25
B. 0.5
C. 0.75
D. 1
Question 4
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population size is 1000, calculate the number of individuals that are homozygous recessive.
A. 100
B. 200
C. 300
D. 400
Question 5
The sense organ responsible for detecting changes in sound pressure levels is the
A. Eye
B. Ear
C. Nose
D. Tongue
Question 6
A 10-gram sample of a subs\tance is dissolved in 50 grams of water. What is the concentration of the solution in g/100g?
A. 0.16 g/100g
B. 0.20 g/100g
C. 0.24 g/100g
D. 0.28 g/100g
Question 7
In a population of 1000 individuals, 70% are heterozygous for the gene controlling the flower color, while 30% are homozygous recessive. If 10% of the population is randomly sampled, what is the probability that at least one individual in the sample is homozygous recessive?
A. 0.3
B. 0.5
C. 0.7
D. 0.9
Question 8
The tissue type that is composed of a mixture of epithelial, connective, muscle, and nervous tissue is known as
A. Connective tissue
B. Epithelial tissue
C. Muscle tissue
D. Mesenchyme
Question 9
A 30-year-old woman presents with a 2-year history of amenorrhea. Her physical examination reveals a normal secondary sexual characteristic development, but her pelvic examination shows a small uterus. What is the most likely diagnosis?
A. Kallmann syndrome
B. Sheehan syndrome
C. Turner syndrome
D. Roki\tansky-Kuster-Hauser syndrome
Question 10
A researcher is studying the effect of pH on the growth of a microorganism. The researcher measures the growth rate of the microorganism at different pH levels and plots the data on a graph. Which of the following types of graphs would best represent the data?
A. A scatter plot
B. A line graph
C. A bar chart
D. A histogram
Question 11
The process of natural selection acts on
A. Genetic variation
B. Genetic drift
C. Gene flow
D. Mutation
Question 12
A 2-year-old child is brought to the hospital with symptoms of malabsorption. The child's stool is pale and bulky. Which of the following enzymes is most likely deficient?
A. Lactase
B. Sucrase
C. Maltase
D. Amylase
Question 13
A 2.5 L solution of 0.5 M NaCl is diluted to a total volume of 5 L. What is the concentration of the resulting solution?
A. 0.1 M
B. 0.2 M
C. 0.25 M
D. 0.3 M
Question 14
A diagram of the human brain is shown below. Which of the following is the primary function of the cerebellum?
A. To control voluntary movements
B. To regulate body temperature
C. To maintain posture and balance
D. To process sensory information
Question 15
A diagram of the human eye is shown below. Which of the following is the primary function of the lens?
A. To focus light on the retina
B. To produce tears for lubrication
C. To regulate the amount of light entering the eye
D. To detect color

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