DNA and RNA Flashcards
who discovered DNA in 1869
Friedrich Miescher
how did Firedrich Miescher discover DNA
used bloody bandage, removed lipids and other stuff, remaining grey stuff was DNA
who confirmed the helical structure of DNA first
Rosalind Franklin
who used Rosalind Franklin’s picture to make the first model of DNA
Watson and Crick
what is the shape of DNA
double helix
what can a double helix be compared to
twisty ladder
what is the structure of DNA
polymer
what is a polymer
long repeating chain if many units
what are the single units of a polymer called
monomer
what is the monomer of DNA
nucelotides
what are the parts of a nucelotide
phosphate group, deoxiribose sugar, nitrogenous base
what makes up the backbone
phosphate group and deoxirobose sugar
what do covalent bonds hold together
sugar and phosphates of 2 nucelotides
what holds the nitrogenous bases together
hyrdogen bonding
how many hydrogen bonds are there in guanine and cytosine
3