DNA stucture Flashcards
Nucleotide
Component of DNA consisting of deoxyribose sugar, phosphate group and a base
Phosphate
Found at 5’ end of DNA
Deoxyribose sugar
Found at DNA 3’ end
Hydrogen bonds
Weak bonds holding complementary bases together
Covalent bonds
Strong strong bond holding the sugar phosphate bone together
Anti parallel
One DNA strand runs the opposite direction to the one it is connected to
5’ to 3’ end
3’ to 5’ end
What shape of DNA
Double standee helix
Complementary base pairing
The specific base pairing in DNA.
Adenine - thymine
Guanine - cytosine
Eukaryote
Organism with membrane bound organelles such as a nucleus, mitochondria and chloroplasts.
Fungus, plants and animals
Prokaryote
An organism without membrane bound organelles such as a Bacteria
Circular chromosomes
DNA found in a prokaryotes: mitochondria and chloroplast
Plasmids
Found in prokaryotes
Linear chromosomes
Found in eukaryotes
Histones
Associated proteins that DNA is coiled around tightly.
Linear chromosomes