nucleic acids Flashcards
1
Q
what is the structure of a nucleotide ?
A
a phosphate base connected to a pentose sugar , connected to a nitrogenous base
they all contain elements C,H,O,N,P
they are the monomers that form the basis of the nucleic acids DNA and RNA
2
Q
which pentose sugar is in DNA and RNA ?
A
DNA - deoxyribose
RNA - ribose
3
Q
what are the four bases ?
A
purines : larger bases with a double carbon ring
Adenine and guanine
pyrimidines : smaller bases with a single carbon ring
Thymine and cytosine
4
Q
how is a nucleotide formed ?
A
the sugar and base combine first and a nucleoside forms
then the phosphate group joins nucleotide forms and water with a phosoester bond
5
Q
how doe
A
