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Respiration - Human Gaseous Exchange

15 Questions
Respiration - Human Gaseous Exchange

Choose the best suitable answer for the following questions(15marks)

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Questions and Answers
  • 1. 
    • A. 

      Trachea, Larynx, Bronchus

    • B. 

      Larynx, Trachea, Pharynx

    • C. 

      Pharynx, Larynx, Trachea

    • D. 

      Trachea, Larynx, Pharynx

  • 2. 
    • A. 

      Bronchiole, Bronchi

    • B. 

      Alveoli, Bronchus

    • C. 

      Bronchi, Bronchiole

    • D. 

      Bronchus, Bronchiole

  • 3. 
    Structure F is well adapted for its function of ___________________.
    • A. 

      Aerobic Respiration

    • B. 

      Gaseous Exchange

    • C. 

      Anaerobic respiration

    • D. 

      Inhalation

  • 4. 
    • A. 

      Diaphragm contracts and flattens

    • B. 

      Inhalation & Exhalation

    • C. 

      Difference in pressure

    • D. 

      External intercostal muscles contract and internal intercostal muscles relax

  • 5. 
    • A. 

      Only diaphragm, intercostal muscles and sternum, is involved in inhalation and exhalation

    • B. 

      During inhalation, external intercostal muscles relax and internal intercostal muscles contract.

    • C. 

      Sternum move upward and forward exhalation.

    • D. 

      Changes of the volume of cavity are workings of only the intercostal muscles and diaphragm.

  • 6. 
    Which of the following statements is FALSE
    • A. 

      C-shaped rings of cartilage are specialized structures of the trachea

    • B. 

      Glands cells secreting mucus help trap dust particle in the trachea

    • C. 

      Cilia in the trachea helps in breathing, to sweep air into the lungs and

    • D. 

      Heart is found in the thoracic cavity

  • 7. 
    Concentration of oxygen is __________ in the lungs and __________ in the tissues.
    • A. 

      High, low

    • B. 

      Low, high

    • C. 

      High, high

    • D. 

      Low, low

  • 8. 
    CO2 + H2O H2CO3H+ + HCO3-The reaction above take place in the red blood cell. Infer what happens when the red blood cell is in an area of high concentration of CO2
    • A. 

      The reaction move to the right

    • B. 

      The reaction move to the left

    • C. 

      The reaction remains unchanged

    • D. 

      The red blood cell shrink

  • 9. 
    From the equation CO2 + H2O H2CO3H+ + HCO3-____________  is the enzyme which catalyze the formation of _______________.
    • A. 

      Carbonic catalase, carbonic acid

    • B. 

      Carbonic anhydrase, carbonic acid

    • C. 

      Carbonic catalase, hydrogencarbonate ions

    • D. 

      Carbonic anhydrase, hydrogencarbonate ions

  • 10. 
    Which of the following does not describe the adaptations of a Red Blood Cell?
    • A. 

      Biconcave shape

    • B. 

      One cell thick

    • C. 

      Contains haemoglobin

    • D. 

      Have an iron-containing structure

  • 11. 
    Which of the following statements is FALSE
    • A. 

      Alveoli is well supplied with blood capillaries.

    • B. 

      Alveoli walls is one cell thick which increase the rate of diffusion of gases.

    • C. 

      A thin film of moisture covering the surface of the alveolus allows membranes to slide over each other easily during breathing.

    • D. 

      Numerous alveoli help increase surface area to volume ratio facilitates exchange of gases.

  • 12. 
    What are the common effects of Emphysema and Chronic bronchitis?
    • A. 

      Surface area for gaseous exchange decreases

    • B. 

      Excessive mucus is secreted by the epithelium

    • C. 

      Airway block making breathing difficult

    • D. 

      None of the above

  • 13. 
    • A. 

      Shape

    • B. 

      Nucleus

    • C. 

      Haemoglobin

    • D. 

      Thin walls

  • 14. 
    Analyze the experimental setup below.What is the experiment investigating?
    • A. 

      The amount of oxygen in inspired air different from expired air

    • B. 

      The water content in inspired air different from expired air

    • C. 

      Is temperature of inspired air different from expired air

    • D. 

      The amount of carbon dioxide in inspired air different from expired air

  • 15. 
    Which of the following statements is TRUE
    • A. 

      Tar is a additive drug found in tobacco.

    • B. 

      Number of cigarettes smoked per day is indirectly proportional with the risk of lung cancer

    • C. 

      Carbon monoxide in tobacco increase the risk of fatty deposits in walls of arteries.

    • D. 

      None of the above