Question

homework - dna replication
why is dna considered to be the code of life?
it is unique to each species.
it is present in all living cells.
it is responsible for the origin of life.
it contains information to form proteins.

Explanation:

DNA contains the genetic instructions (in the form of nucleotide sequences) that are transcribed into mRNA and then translated into proteins. Proteins are essential for the structure, function, and regulation of the body's tissues and organs. While DNA is unique to each species (but also has some conserved regions across species), present in all living cells (but that's not the key reason for being the "code of life"), and not directly responsible for the origin of life (abiogenesis theories involve other factors), its role in encoding information for protein synthesis is fundamental. Proteins carry out most of the cellular functions, and DNA's sequence determines which proteins are made.

Answer:

It contains information to form proteins.