OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Carbon, Hydrogen, Nitrogen, Oxygen
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Carbon, Oxygen, Sodium, Potassium
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Carbon, Hydrogen, Calcium, Nitrogen
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Carbon, Oxygen, Nitrogen, Sulfur
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Detailed explanation-1: -CHON is a mnemonic acronym for the four most common elements in living organisms: carbon, hydrogen, oxygen, and nitrogen.
Detailed explanation-2: -Four elements-carbon (C), oxygen (O), hydrogen (H), and nitrogen (N)-make up 96% of living matter.
Detailed explanation-3: -The Four Elements. Greek philosophy supposed the Universe to comprise four elements: Fire, Water, Earth, and Air. Air was originally supposed to be a component of the Æther [ether, not to be confused with the gas], the element that filled the Universe in the absence of the other three.
Detailed explanation-4: -Major bio-macromolecules (proteins, carbohydrates, lipids and nucleic acids) found in the body of all living organisms on Earth are made up mostly by chemically combining carbon, hydrogen, oxygen and nitrogen.