Question

how does the genetic information in dna code for proteins in a cell?
by the particular order of nitrogen bases in a cell
by using its phosphate and sugar molecules
by creating a new double helix structure
by adding more hydrogen bonds to its structure

Explanation:

DNA contains four nitrogen - bases (adenine, thymine, cytosine, and guanine). The sequence of these nitrogen - bases forms a genetic code. This code is read in groups of three (codons) during protein synthesis to determine the sequence of amino acids in a protein. Phosphate and sugar molecules form the backbone of DNA and are not directly involved in coding for proteins. Creating a new double - helix structure is related to DNA replication, not protein coding. Adding hydrogen bonds doesn't code for proteins.

Answer:

By the particular order of nitrogen bases in a cell