Biology A-Level
Nitrogenous bases
What Nitrogenous bases means in Biology A-Level, as defined for OCR.
Definition of Nitrogenous bases
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Reference: OCR
Purine bases are adenine and guanine; pyrimidine bases are cytosine, thymine (DNA) and uracil (RNA).
Topics that use Nitrogenous bases
- Nucleotides and nucleic acids (OCR A-Level)
Related terms
- ATP and ADP as energy carriers
- Codon–anticodon pairing and peptide bond formation
- Cold conditions protecting DNA and aiding precipitation
- complementary base pairing
- Complementary base pairing of free nucleotides
- Condensation polymerisation
- Conservation of one original strand per daughter molecule
- DNA double helix
Using Nitrogenous bases in the exam
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