Nucleic Acid Structure Review Flashcards
1
Q
nucleotide structure
A
pentose sugar (missing an O2 in DNA)
Nitrogenous base attached to carbon 1 (purines - two ringed structures and pyrimidines - single ringed structure)
phosphate group - can be mono, di or tri - attached to carbon 5
2
Q
where on the pentose sugar does the growth of a DNA/RNA chain occur
A
on the 3’ carbon
3
Q
where does the phosphate group attach
A
5’ carbon
4
Q
define nucleoside
A
base and a sugar i.e adenine + ribose = adenosine
5
Q
what does antiparallel configuation mean
A
DNA double helix strands run in opposite directions
