Which elements are present in nucleic acids?

Which elements are present in nucleic acids?

• A. CHONP.
• B. CHON.
• C. CHP.
• D. CNOP.

Answer: (A)

Nucleic acids are made from nucleotides that include a sugar, a phosphate group, and a nitrogenous base. The sugar and bases contribute carbon, hydrogen, and oxygen, while the bases contain nitrogen, and the phosphate group provides phosphorus. So DNA and RNA contain all five elements: carbon, hydrogen, oxygen, nitrogen, and phosphorus. That’s why the set including CHONP is correct. The other options miss at least one essential element—for example, CHON lacks phosphorus, CHP lacks nitrogen, and CNOP misses hydrogen—so they don’t describe the full composition of nucleic acids.

Nucleic acids are made from nucleotides that include a sugar, a phosphate group, and a nitrogenous base. The sugar and bases contribute carbon, hydrogen, and oxygen, while the bases contain nitrogen, and the phosphate group provides phosphorus. So DNA and RNA contain all five elements: carbon, hydrogen, oxygen, nitrogen, and phosphorus. That’s why the set including CHONP is correct. The other options miss at least one essential element—for example, CHON lacks phosphorus, CHP lacks nitrogen, and CNOP misses hydrogen—so they don’t describe the full composition of nucleic acids.