OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Carbohydrates
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Lipids
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Nucleic Acids
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Proteins
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Detailed explanation-1: -Answer and Explanation: The macromolecule that requires the element sulfur (S) is c) proteins. Proteins are made of amino acids, small molecules with a carboxyl group, amino group, and a variable R-group. In some amino acids such as methionine and cysteine, sulfur forms part of the R-group.
Detailed explanation-2: -Methionine and cysteine are the two primary sulfur-containing amino acids in mammals. Methionine is an essential amino acid, obtained by dietary intake while cysteine is non-essential and a metabolite of methionine metabolism.
Detailed explanation-3: -Proteins contain between 3 and 6% of sulfur amino acids. A very small percentage of sulfur comes in the form of inorganic sulfates and other forms of organic sulfur present in foods such as garlic, onion, broccoli, etc.