ribonucleic acid
adenine uracil guanine cytosine
RNA is composed of a single strand of nucleotides, which are typically represented by the letters A, U, G, and C. Therefore, RNA consists of one chain of nucleotides.
In DNA it will be Thymine and in RNA it will be Uracil that "combines" with Adenine
RNA is actually a single stranded copy of DNA composed of ribonucleic acids, hence the name RNA. Genomic DNA is read by an enzyme called RNA polymerase which uses DNA as a template to make a corresponding RNA copy. The RNA transcript is recognized by ribosomes and is used as a guide to assemble amino acids into long chains called polypeptides or proteins. The letters (or bases) of the DNA corresponds exactly to the letters made in the RNA. A-->U C--> G
If you are referring to the four nitrogen bases found in DNA and RNA, they are as follows: DNA - adenine, guanine, cytosine, thymine; RNA - adenine, guanine, cytosine, uracil.
The four specific nucleotides in RNA are adenine (A), cytosine (C), guanine (G), and uracil (U). These nucleotides are the building blocks that form the RNA molecule by following a specific sequence dictated by the genetic code.
The nitrogenous substances A and G are purines (double rings).
RNA polymerase is an enzyme that makes a RNA copy from an RNA template.
The three types of RNA are: mRNA (messanger RNA), rRNA (ribosomal RNA), and tRNA (transfer RNA).
Cytosine is always coupled with Guanine. (I like to remember that the round letters stick together).In DNA, Thymine is coupled with Adenine, but in RNA, Thymine is replaced by Uracil.Therefore, in RNA, U and A go together, always.
mRNA - messenger RNA tRNA - transfer RNA rRNA - ribosomal RNA
Messenger RNA Transcription RNA Ribosomal RNA