IB biology - A1.2 Nucleic acids

🗓️ 2026-08-07 ✏️ Elliot 📁 IB Biology 🏷️ Biology | IB | Molecules

Syllabus

A1.2.1 DNA as the genetic material of all living organisms
A1.2.2 Components of a nucleotide
A1.2.3 Sugar-phosphate bonding and the sugar-phosphate “backbone” of DNA and RNA
A1.2.4 Bases in each nucleic acid that form the basis of a code
A1.2.5 RNA as a polymer formed by condensation of nucleotide monomers
A1.2.6 DNA as a double helix made of two antiparallel strands of nucleotides with two strands linked by hydrogen bonding between complementary base pairs
A1.2.7 Differences between DNA and RNA
A1.2.8 Role of complementary base pairing in allowing genetic information to be replicated and expressed
A1.2.9 Diversity of possible DNA base sequences and the limitless capacity of DNA for storing information
A1.2.10 Conservation of the genetic code across all life forms as evidence of universal common ancestry

A1.2.11 Directionality of DNA and RNA
A1.2.12 Purine-pyrimidine bonding as a component of DNA helix stability
A1.2.13 Efficient packaging of DNA molecules
A1.2.14 Evidence from the Hershey-Chase experiment for DNA as the genetic material
A1.2.15 Chargaff’s data on the relative amounts of pyrimidine and purine bases across diverse life forms