Biology › Nucleic acids, genomes and protein synthesis
Nucleic acids, genomes and protein synthesis
Unit B05 · 4 lessons.
Notes
Illustrated notes for each topic in this unit, with worked examples and a checklist of objectives.
- DNA and RNA structure
The three parts of a nucleotide, the sugar-phosphate backbone made by condensation, complementary base pairing with two hydrogen bonds between…
- DNA replication
Semi-conservative replication, helicase unwinding the helix and breaking hydrogen bonds, DNA polymerase and the 5 prime to 3 prime constraint that…
- The genetic code and transcription
The genetic code as triplet, degenerate, non-overlapping and near-universal, with the consequence of each property; genes, introns and exons…
- Translation and protein synthesis
The structure of the ribosome and its two tRNA binding sites, tRNA anticodons, the three stages of translation, peptide bond formation, the ATP cost…
Questions
60 original questions across 4 topics, every one with a point-by-point mark scheme.
Practical work
The practical capabilities this unit's work belongs to, each with its techniques, its calculations and the errors that cost marks.