Flashcards in 3.3 DNA Structure Deck (11)
Outline DNA nucleotide structure
A DNA nucleotide is made up of a phosphate group, a deoxyribose sugar, and a nitrogenous base (can be one of four different bases).
State the names of the four bases of DNA
Adenine, Guanine, Thymine, Cytosine.
State the two purines
Adenine and Guanine
State the two pyrimidines
Thymine and Cytosine
Outline how DNA nucleotides are linked together into a single strand.
DNA nucleotides are linked together by a covalent bond between the deoxyribose sugar of one nucleotide, and the phosphate group of another.
Outline the structure of a double helix
Two anti-parallel polynucleotide chains, held together by hydrogen bonds between the base pairs.
State Adenine's base pair
State Thymine's base pair
State Guanine's base pair
State Cytosine's base pair