PATHOLOGY MCQ
RESPIRATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the gas known as ____ is needed to stay alive and properly.
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oxygen
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carbon dioxide
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nitrogen
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helium
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Explanation:
Detailed explanation-1: -When we breathe, the respiratory system takes in oxygen and sends out carbon dioxide. The cells in our bodies need fresh oxygen to stay alive. As cells do their jobs, they make and give off carbon dioxide. This exchange of oxygen and carbon dioxide is called respiration.
Detailed explanation-2: -Ans: Oxygen was discovered by Joseph Priestley in 1774. It is used for breathing and is responsible for the burning of substances. Q2.
There is 1 question to complete.