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The D in DNA and R in RNA is one diffrence and they are both sugars, then there is a nitrogenous base that have been replaced by another one. When it come to 3d form then there is also a diffrence becuase mRNA don't base pair with it self. Out from that try answer the following:
Sugar: _________ _________
nitrogenous base: ___________ _________
three-dimensional structure: __________ __________
alright...so, mRNA is single stranded, DNA is double stranded.
mRNA has the sugar ribose, DNA has the sugar deoxyribose.
mRNA has the nitrogen base Uracil instead of Thymine that DNA has.
mRNA leaves the nucleus, DNA does not (assuming the cell has a nucleus)......
we studied messenger RNA itself....so didn`t recognise......this much only...i do remember...
don't forget about the 7-methylguanosine cap at the 5' end, and the PolyAdenine-Tail at the 3' end