POST UTME UNIPORT 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A diagram of a plant cell is shown below. Identify the part labeled 'A'.
A. Mitochondria
B. Chloroplast
C. Nucleus
D. Vacuole
Question 2
In genetics, the Hardy-Weinberg principle states that the frequency of alleles in a population will remain cons\tant from generation to generation in the absence of certain factors. Which of the following is a factor that can cause a change in the frequency of alleles?
A. Mutation.
B. Genetic drift.
C. Gene flow.
D. Natural selection.
Question 3
In the process of osmoregulation, the kidneys play a crucial role in maintaining the balance of electrolytes and water in the body. Which of the following is a function of the kidneys in osmoregulation?
A. To regulate the pH of the blood.
B. To remove excess ions from the blood.
C. To produce antidiuretic hormone (ADH).
D. To regulate the concentration of glu\cose in the blood.
Question 4
What is the primary mechanism by which the body regulates blood pressure during exercise?
A. Sympathetic nervous system
B. Parasympathetic nervous system
C. Renin-angioten\sin-aldosterone system
D. Kidney function
Question 5
In the human eye, the retina contains specialized photoreceptor cells called rods and cones. Which of the following is a characteristic of the rods?
A. They are sensitive to color.
B. They are sensitive to low light levels.
C. They are responsible for peripheral vision.
D. They are responsible for central vision.
Question 6
The cell membrane is semi-permeable, allowing certain subs\tances to pass through while restricting others. Which of the following is an example of a subs\tance that can pass through the cell membrane by diffusion?
A. Glu\cose
B. Oxygen
C. Water
D. Proteins
Question 7
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. 100
B. 200
C. 300
D. 400
Question 8
In the process of photosynthesis, what is the primary function of the thylakoid membrane?
A. To absorb light energy
B. To produce ATP
C. To reduce NADP+
D. To increase pH
Question 9
A researcher is studying the structure of a specific tissue. Which of the following types of tissue is composed of epithelial cells?
A. Connective tissue
B. Muscle tissue
C. Nervous tissue
D. Epithelial tissue
Question 10
A 0.1 M solution of HCl is mixed with a 0.1 M solution of NaOH in a 1:1 ratio. What is the pH of the resulting solution?
A. 1
B. 7
C. 10
D. 14
Question 11
A cell is undergoing mitosis. Which of the following stages is characterized by the separation of sister chromatids?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Question 12
The diagram below shows a cross-section of the human brain. Which part of the brain is responsible for controlling voluntary movements?
A. Cerebrum
B. Cerebellum
C. Basal ganglia
D. Brainstem
Question 13
A population of rabbits is growing according to the \logistic growth model. If the carrying capacity is 1000 individuals and the initial population is 100, what is the population size after 5 generations?
A. 100
B. 500
C. 750
D. 1000
Question 14
A diagram of the human kidney is shown below. Identify the structure responsible for filtering waste products from the blood.
A. Glomerulus
B. Proximal convoluted tubule
C. Distal convoluted tubule
D. Collecting duct
Question 15
The Hardy-Weinberg principle states that the frequency of alleles in a population remains cons\tant from generation to generation. Which of the following is a necessary condition for the Hardy-Weinberg principle to hold?
A. Random mating
B. No mutation
C. No genetic drift
D. All of the above

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