Ribonucleic Acid (RNA)
- Plays an essential role in the transfer of infomation from DNA to the proteins that make up the enzymes and tissues in the body.
- RNA is needed bacause DNA is too long to leave the nucleus.
- A short section of DNA corresponding to a single gene is transcribed onto a similarly short messenger RNA (mRNA)
- Each individual mRNA is therefore much shorter than the whole chromosome of DNA. It is a polymer composed of many nucleotide monomers.
- RNA - Ribose pentose sugar - DNA - Deoxyribose pentose sugar
- In RNA the thymine base is replaced with Uracil, like Thymine, Uracil is a pyrimadine that forms two hydrogen bonds with adenine. Therefore the base pairing rules still apply when RNA nucleotides bind to DNA to make copies of the particular part of DNA
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