CELL STRUCTURES AND FUNCTION
BIO MOLECULES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Fe and Na
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Ca and Na
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S and N
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S and Na
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Detailed explanation-1: -Classification of the Essential Elements Note that most living matter consists primarily of the so-called bulk elements: oxygen, carbon, hydrogen, nitrogen, and sulfur-the building blocks of the compounds that constitute our organs and muscles.
Detailed explanation-2: -Scientists believe that about 25 of the known elements are essential to life. Just four of these – carbon (C), oxygen (O), hydrogen (H) and nitrogen (N) – make up about 96% of the human body. 25 elements are known to be essential to life.
Detailed explanation-3: -Uranium is the element which is not essential for life to originate and flourish on a planet.
Detailed explanation-4: -The new catalog includes all of the so-called “CHNOPS elements” – carbon, hydrogen, nitrogen, oxygen, phosphorous, and sulfur – known to be the building blocks of all life on Earth.