Biology MCQs Part 31 | NTS Biology MCQs With Answer

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                  Subject Key Point 

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291.     For aerobic respiration, which gas is required for the complete oxidation of food molecules?

    (A) Carbon dioxide

    (B) Nitrogen

    (C) Oxygen

   (D) Hydrogen

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292.     What is released as a byproduct of aerobic respiration?

            (A) Nitrogen

            (B) Oxygen

            (C) Carbon monoxide

            (D) Carbon dioxide

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293.     What does gaseous exchange involve?

            (A) Exchange of nitrogen and oxygen

            (B) Exchange of oxygen and carbon dioxide

            (C) Exchange of hydrogen and carbon dioxide

            (D) Exchange of oxygen and water vapor

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294.     What is the physical process of taking air in and out of the body called?

            (A) Respiration

            (B) Digestion

            (C) Breathing

            (D) Circulation

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295.     Through which structures does gaseous exchange occur in plants?

            (A) Nostrils

            (B) Alveoli

            (C) Stomata, lenticels, and general surface

            (D) Bronchioles

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296.     Which of the following is NOT part of the air passageway in humans?

            (A) Trachea

            (B) Pharynx

            (C) Bronchi

            (D) Alveoli

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297.     Where does air go after passing through the nasal cavities?

            (A) Trachea

            (B) Larynx

            (C) Pharynx

            (D) Bronchi

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298.     Into how many bronchi does the trachea divide?

            (A) One

            (B) Two

            (C) Three

            (D) Four

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299.     Where do the bronchioles end?

            (A) Trachea

            (B) Lungs

            (C) Alveoli

            (D) Pharynx

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300.     What covers the walls of the alveoli?

            (A) Nerves

            (B) Muscles

            (C) Blood capillaries

            (D) Cartilage

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