Why is the sequence of DNA important?

it used to create copies of cells

it makes sure there will be no mistakes in the information

it determines protein structure

it is needed to build new kinds of organisms

It determines protein structure.

Explanation:

DNA is present as the genetic material in almost all the living organisms. The DNA multiply their number by the process known as DNA replication. The RNA is formed from the DNA by the process of transcription.

The RNA is further converted into the protein product by the process of translation. The amino acid coded during the process determines the protein structure by the sequence of the DNA. The arrangement of the amino acids determines the structure of the proteins by the sequence of DNA.

Thus, the correct answer is option (3).

The answer is C. It determines protein structure.