-RNA is a single stranded polymer of nucleotide
-RNA contains the pentose sugar, ribose
-RNA contains the organic nitrogenous bases but thymine is replaced by uracil
1.mRNA is a long, single-stranded molecule formed into a helix. It is manufactured in the nucleus and carries the genetic code from the DNA to the ribosomes
2.tRNA is a small single-stranded molecule. tRNA molecules transport amino acids to the ribosome so that proteins can be synthesised
3.rRNA is found in the cytoplasm and is a large, complex molecule made up of both double and single helices. Ribosomes are made up of ribosomal RNA and protein.
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