Question #7b381
2 Answers
RNA is formed from DNA to carry genetic information to ribosomes to make proteins.
Explanation:
DNA is found in the nucleus of a cell and is made of the chemicals adenine, thymine, cytosine and guanine (with ribose sugars and phosphate groups forming the backbone).
From DNA the cell derives a molecule called RNA, which is essentially one strand of the DNA double-helix that uses uranine instead of thymine.
RNA is what then transports the genetic coding to ribosomes for actual protein synthesis. It tells the ribosomes which amino acids to put where, forming a giant polypeptide which folds into the protein complex.
Protein synthesis occurs in the ribosome when tRNA (the yellowish complexes below) bonds temporarily to the mRNA and adds amino acids to the protein being built.
The sugar moiety in DNA is Deoxyribose and in RNA it is Ribose.
There are also differences in bases and therefore in function. Historically RNA appeared earlier than DNA.
