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Breathing and Exchange of Gases Test 24

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Breathing and Exchange of Gases Test 24
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  • Question 1
    1 / -0
    In the process of respiration, 
    Solution

    During respiration, glucose is converted into carbon dioxide and water in the presence of oxygen within a living cell. The energy is released in the form of ATP or adenosine triphosphate. So, we can say that the energy stored in glucose is transferred into ATP. This process can be shown in the form of a word equation as shown below:

    Glucose + oxygen ----> carbon dioxide + water + energy

    So, the correct answer is option C.

  • Question 2
    1 / -0
    During inspiration, the diaphragm
    Solution

    Correct Option: B

    Explanation:

    • Two muscles that are involved during inspiration and expiration are costal muscles and diaphragm.
    • During inspiration, the diaphragm contracts and moves downwards and flattens.
    • This increases the thoracic cavity and decreases the pulmonary pressure.
    • Since the air moves from high partial pressure to lower partial pressure, inspiration takes place.

    Hence, during inspiration, the diaphragm flattens.

  • Question 3
    1 / -0
    Animals such as ............. have lungs in their chest cavities like human beings.
    Solution
      The lungs are the primary organs of the respiratory system in humans and many other animals including a few fish and some snails. In mammals and most other vertebrates such as Amphibians, reptiles, Aves. Hence Animals such as Elephants, lions, Cows, goats, Frogs, lizards, snakes, birds have lungs in their chest cavities like human beings.
      So, the correct option is 'All of these'.
    • Question 4
      1 / -0
      Which of the bone structures protects the lungs from injury in our body ?
    • Question 5
      1 / -0
      Which of these have lungs?
      Solution
      Lungs are the vital respiratory unit present in the certain complex organism. In mammals and most other vertebrates, two lungs are located near the backbone on either side of the heart. The oxygen is enforced  from the atmosphere into the lungs and transfer it into the bloodstream which is exchanged by carbon dioxide expelled by the tissues.
      Respiration is driven by different muscular systems in different species. Mammals, reptiles, and birds use their musculoskeletal systems to support and foster breathing. In early tetrapods, the air was driven into the lungs by the pharyngeal muscles via buccal pumping, a mechanism still seen in amphibians. In humans, the primary muscle that drives breathing is the diaphragm. Earthworms, cockroach,and starfish does not have lungs. 
      Therefore, the correct answer is option D.
    • Question 6
      1 / -0
      The number of times a person breathes in ............ is termed as the breathing rate.
      Solution
      The respiration rate (RR) or breathing rate is the rate (frequency) of ventilation, that is, the number of breaths (inhalation-exhalation cycles) taken within a set amount of time (typically 60 seconds). A normal respiratory rate is termed eupnea, an increased respiratory rate is termed tachypnea and a lower-than-normal respiratory rate is termed bradypnea. 
      Therefore, the correct answer is option A.
    • Question 7
      1 / -0
      In our body, carbon monoxide interferes with the transport of 
      Solution
      Inhalation of carbon monoxide (CO) lead to poisoning of the system. This a colorless, odorless, highly poisonous gas produced as a result of  incomplete combustion interferes with the ability of the blood to carry oxygen resulting in headache, nausea, convulsions and even death of an individual.
      Therefore, the correct answer is option C.
    • Question 8
      1 / -0
      Which of the following bone structures protect the lungs in our body?
      Solution
      The vertebral column, also known as the backbone or spine, is a bony skeletal structure found in vertebrates. Skull is present in head. The rib cage is formed by the vertebral column, ribs, and sternum and encloses the heart and lungs. In humans, the rib cage, also known as the thoracic cage, is a bony and cartilaginous structure which surrounds the thoracic cavity and supports the pectoral girdle (shoulder girdle).
      Therefore, the correct answer is option A.
    • Question 9
      1 / -0
      Frog (on land) breathes through 
      Solution
      Frogs can live both on land and in freshwater and belong to class Amphibia of phylum Chordata. Frogs respire on land and in the water by two different methods. In water, skin acts as a respiratory organ(i.e cutaneous respiration) by diffusion. On land, lungs act as the respiratory organ. (i.epulmonary respiration). The lungs are a pair of elongated, pink coloured sac-like structures present in the upper part of the trunk region (thorax). Air enters through the nostrils into the buccal cavity and then to the lungs. Hence, the frog (on land) breathes through the lungs.
      So, the correct  option is 'lungs'.
    • Question 10
      1 / -0
      In humans, the concentration of carbon dioxide in the plasma
      Solution
      The medulla oblongata at the base of the brain increases breathing rate if the amount of carbon dioxide increases in the blood. It does not regulate breathing rate by checking oxygen content.
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