Question

Which are protoplasmic elements?

• A. C, O, N, S
• B. C, H, O
• C. O, N, P
• D. All of the above

Answer 1

Answer: (D)

All of the above

Primary elements are the protoplasmic elements (carbon, hydrogen, oxygen, nitrogen, phosphorous and sulphur), which become constituent of protoplasmic components like nucleic acids, proteins, chlorophyll etc. Carbon, hydrogen and oxygen are the basic framework elements required for synthesis of all the biomolecules. Nitrogen and phosphorous are the element required for synthesis of nucleic acids and nitrogen and sulphur are the additional element, required for the synthesis of proteins.