POST UTME COAL CITY UNIVERSITY 2019 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The following diagram shows a cross-section of a plant root. Identify the structure labeled 'A':
A. Xylem
B. Phloem
C. Cortex
D. Endodermis
Question 2
Which of the following statements about the excretory system is false?
A. The kidneys filter waste products from the blood
B. The liver produces bile to aid in digestion
C. The skin helps to regulate body temperature
D. The lungs are responsible for removing waste products from the blood
Question 3
A patient is experiencing difficulty seeing objects at a dis\tance. Which of the following sense organs is responsible for this type of vision?
A. Cornea
B. Iris
C. Lens
D. Retina
Question 4
In the context of genetics, what is the primary function of the centromere in a eukaryotic chromosome?
A. To facilitate the separation of sister chromatids during mitosis
B. To ensure the accurate transmission of genetic information from one generation to the next
C. To regulate the expression of genes
D. To facilitate the repair of DNA damage
Question 5
A 20-year-old male athlete has a resting heart rate of 40 beats per minute. What is the likely cause of this condition?
A. Dehydration
B. Anemia
C. Tachycardia
D. Bradycardia
Question 6
The following equation represents the binding of oxygen to hemoglobin:
A. Endothermic reaction
B. Exothermic reaction
C. Reversible reaction
D. Irreversible reaction
Question 7
The process of mitosis in plants results in the production of
A. Two daughter cells with the same number of chromosomes
B. Four daughter cells with the same number of chromosomes
C. Two daughter cells with a different number of chromosomes
D. Four daughter cells with a different number of chromosomes
Question 8
The following equation represents the reaction of glu\cose with oxygen to produce carbon dioxide and water:
A. Endothermic reaction
B. Exothermic reaction
C. Reversible reaction
D. Irreversible reaction
Question 9
A genetic variation that results in a change in the amino acid sequence of a protein is an example of
A. Point mutation
B. Frameshift mutation
C. Gene duplication
D. Gene deletion
Question 10
A 2.5-liter solution of 0.5 M NaCl is diluted to 5 liters. What is the new concentration of NaCl?
A. 0.2 M
B. 0.25 M
C. 0.3 M
D. 0.35 M
Question 11
A patient has a severe case of tuberculosis. The patient's sputum is cultured and found to contain Mycobacterium tuberculosis. Which of the following is a characteristic of this bacterium?
A. It is a Gram-positive bacterium.
B. It is a Gram-negative bacterium.
C. It is an acid-fast bacterium.
D. It is a spore-forming bacterium.
Question 12
A 30-year-old female patient has a history of recurrent kidney stones. The patient's 24-hour urine collection shows a high level of oxalate. What is the likely cause of this condition?
A. Hyperparathyroidism
B. Hypokalemia
C. Hyperoxaluria
D. Gastrointestinal malabsorption
Question 13
A diagram of the human circulatory system is shown below. What is the function of the heart?
A. Pumping blood to the lungs
B. Pumping blood to the brain
C. Pumping blood to the muscles
D. Pumping blood to the liver
Question 14
In the context of hormonal coordination, what is the primary function of the hypothalamic-pituitary-adrenal (HPA) axis?
A. Regulation of body temperature
B. Maintenance of homeostasis
C. Stimulation of reproductive processes
D. Modulation of the immune response
Question 15
In a tropical rainforest, the nutrient cycle is primarily driven by the decomposition of organic matter by which of the following organisms?
A. Fungi
B. Bacteria
C. Protozoa
D. Rotifers

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub: