PATHOLOGY MCQ
RESPIRATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Nitrogen which makes up about 79% of the atmosphere is not involved in the breathing process.
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true
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false
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -Nitrogen makes up almost four fifths of the air we breathe, but being unreactive is not used in respiration at all-we simply breathe the nitrogen back out again, unchanged. However, nitrogen is essential for the growth of most living things, and is found as a vital ingredient of proteins.
Detailed explanation-2: -Earth’s atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases. Trace amounts of carbon dioxide, methane, water vapor, and neon are some of the other gases that make up the remaining 0.1 percent.
There is 1 question to complete.