nucleic acids Flashcards
(17 cards)
what are the 3 types of nucleic acids?
1) DNA
2) RNA:
i) m-RNA
ii) t-RNA
iii) r-RNA
3) energy reactions
-ATP
-NAD
-FAD
what are the monomers of nucleic acids?
nucleotides
what is the structure of a nucleotide?
-phosphate group
-pentose sugar
-nitrogenous base
what type of bond link the different nucleotides together?
phosphodiester bond, on C5 and C# of the sugar
what is the direction of DNA
5’ to 3’
which nitrogenous base are part of purines?
adenine and guanine
which nitrogenous bases are part of pyrimidines?
cytosine, thymine, and uracil*
what is the function of DNA?
storing genetic information
the complementary strands of DNA are…
a) parallel
b) antiparallel
antiparallel
by which type of bond are the two polynucleotide strands of DNA connected?
hydrogen bond
how many h-bonds join adenine and thymine?
2
how many h-bonds join guanine and cytosine?
3
what am I:
transfers information from DNA to the ribosome
m-RNA
what am I:
-structural part of the ribosome and have a catalytic function
r-RNA
what am I:
carries amino acids to the ribosome
t-RNA
what am I:
primary energy currency of the cell
ATP
what am I:
electron carriers for many cellular reactions
NAD and FAD
