RNA: Structure and Function Flashcards
1
Q
describe the structure of a RNA monomer
A
- ribose sugar (pentose)
- nitrogenous base > adenine, uracil, cytosine and guanine
- phosphate group
2
Q
what are the nitrogenousbases of RNA
A
adenine
uracil
cytosine
guanine
3
Q
what are the three types of RNA
A
mRNA > messenger RNA
tRNA > transfer RNA
rRNA > ribosome RNA
4
Q
whats the function of mRNA
A
to copy one gene from a DNA strand
5
Q
what is the function of tRNA
A
to transfer the amino acid to the mRNA strand for protein synthesis
6
Q
what is the overall function of RNA
A
to copy and transfer the genetic code from DNA in the nucleus to the ribosomes
7
Q
what shape does tRNA have and how is it formed
A
- a cloverleaf shape
- this is formed by the folding of the single strand where hydrogen bonding occurs to hold the folds together
