POST UTME PAN-ATLANTIC UNIVERSITY 2019 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A solution contains 0.5 M glu\cose and 0.2 M fructose. If 10 mL of this solution is diluted to 100 mL, what is the concentration of glu\cose in the final solution?
A. 0.05 M
B. 0.1 M
C. 0.15 M
D. 0.2 M
Question 2
The process of meiosis is a type of cell division that results in the production of gametes. What is the name of the stage where the chromosomes line up in the center of the cell?
A. Prophase I
B. Metaphase I
C. Anaphase I
D. Telophase I
Question 3
The diagram below shows the structure of a nerve cell. Which part of the cell is responsible for transmitting signals to other cells?
A. D\endrite
B. Axon
C. Cell Body
D. Myelin Sheath
Question 4
A 20-year-old male patient presents with symptoms of hypogonadism. Which of the following hormones is most likely deficient?
A. Follicle-stimulating hormone (FSH)
B. Luteinizing hormone (LH)
C. Testosterone
D. Growth hormone
Question 5
In the context of classification of living things, what is the primary function of the kingdom level?
A. To group organisms based on their cell structure
B. To group organisms based on their genetic makeup
C. To group organisms based on their body structure
D. To group organisms based on their metabolic processes
Question 6
A 5.6 kg block is attached to a horizontal, massless spring with a force cons\tant of 120 N/m. If the block is displaced by 0.2 m from its equilibrium position and released from rest, what is the maximum speed of the block?
A. 0.8 m/s
B. 1.2 m/s
C. 1.6 m/s
D. 2.4 m/s
Question 7
A 2-year-old child is brought to the emergency room with a history of recurrent infections. Physical examination reveals a small, underdeveloped spleen. Which of the following is the most likely diagnosis?
A. DiGeorge syndrome
B. Wiskott-Aldrich syndrome
C. X-linked a\gammaglobulinemia
D. Leukocyte adhesion deficiency
Question 8
In a photosynthetic pathway, which of the following is the primary electron acceptor in the light-dep\endent reactions?
A. P680
B. P700
C. Pheophytin
D. Plastocyanin
Question 9
A cell is placed in a medium with a high concentration of glu\cose. Which of the following is the primary response of the cell?
A. Increase in cell size
B. Increase in cell division
C. Increase in cell death
D. No change
Question 10
In the context of hormonal coordination, what is the primary function of the hypothalamic-pituitary-adrenal (HPA) axis?
A. Regulation of body temperature
B. Stimulation of the immune system
C. Modulation of the stress response
D. Control of appetite and satiety
Question 11
A microorganism is isolated from a patient's blood culture and identified as Staphylococcus aureus. Which of the following is a common virulence factor associated with this bacterium?
A. Pneumoly\sin
B. Staphylococcal enterotoxin
C. Coagulase
D. Hemoly\sin
Question 12
A patient with chronic obstructive pulmonary disease (COPD) has difficulty exhaling due to airway obstruction. Which of the following respiratory muscles is primarily responsible for expiration?
A. Diaphragm
B. External inter\costal muscles
C. Internal inter\costal muscles
D. Abdominal muscles
Question 13
In a population of 1000 individuals, 60% are heterozygous for the ABO blood group gene, 20% are homozygous dominant, and 20% are homozygous recessive. What is the expected frequency of the A allele?
A. 0.45
B. 0.55
C. 0.65
D. 0.75
Question 14
In the context of nutrition, what is the primary function of chlorophyll in photosynthesis?
A. To absorb light energy from the sun
B. To convert light energy into chemical energy
C. To transport water and minerals to the plant
D. To regulate the temperature of the plant
Question 15
A species of plant has a root system that is well-suited for absorbing water from the soil. This is an example of which type of root system?
A. Taproot
B. Fibrous root
C. Adventitious root
D. Modified root

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