Structure (Leaving Cert Biology): Flashcards
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Nucleic acids
Nucleic acids
Large molecules that store genetic information in all living cells
Two main types of nucleic acids
Two main types of nucleic acids
DNA and RNA
Building blocks of nucleic acids
Building blocks of nucleic acids
Nucleotides
3 components of DNA nucleotide
3 components of DNA nucleotide
Phosphate group, deoxyribose sugar, nitrogenous base
Four nitrogenous bases in DNA
Four nitrogenous bases in DNA
Adenine, Thymine, Guanine, Cytosine (A, T, G, C)
Adenine pairs with which base in DNA?
Adenine pairs with which base in DNA?
Thymine (A-T)
Guanine pairs with which base in DNA?
Guanine pairs with which base in DNA?
Cytosine (G-C)
H-bonds between A-T base pair
H-bonds between A-T base pair
2 hydrogen bonds
H-bonds between G-C base pair
H-bonds between G-C base pair
3 hydrogen bonds
Shape of DNA structure
Shape of DNA structure
Double helix
Sugar in RNA nucleotides
Sugar in RNA nucleotides
Ribose sugar
RNA base that replaces Thymine
RNA base that replaces Thymine
Uracil (U)
DNA strand structure vs RNA
DNA strand structure vs RNA
DNA is double-stranded; RNA is single-stranded
Which base pairs with Adenine in RNA?
Which base pairs with Adenine in RNA?
Uracil (A-U)
Chromosome composition (% protein & DNA)
Chromosome composition (% protein & DNA)
60% protein, 40% DNA