How does a cell produce a sequence of amino acids from a sequence of DNA bases?
How is the reliability of protein synthesis ensured?
How does the diversity of proteins produced contribute to the functioning of a cell?
What biological processes depend on hydrogen bonding?
D1.2.1 Transcription as the synthesis of RNA using a DNA template
D1.2.2 Role of hydrogen bonding and complementary base pairing in transcription
D1.2.3 Stability of DNA templates
D1.2.4 Transcription as a process required for the expression of genes
D1.2.5 Translation as the synthesis of polypeptides from mRNA
D1.2.6 Roles of mRNA, ribosomes and tRNA in translation
D1.2.7 Complementary base pairing between tRNA and mRNA
D1.2.8 Features of the genetic code
D1.2.9 Using the genetic code expressed as a table of mRNA codons
D1.2.10 Stepwise movement of the ribosome along mRNA and linkage of amino acids by peptide bonding to the growing polypeptide chain
D1.2.11 Mutations that change protein structure
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D1.2.12 AHL Directionality of transcription and translation
D1.2.13 AHL Initiation of transcription at the promoter
D1.2.14 AHL Non-coding sequences in DNA do not code for polypeptides
D1.2.15 AHL Post-transcriptional modification in eukaryotic cells
D1.2.16 AHL Alternative splicing of exons to produce variants of a protein from a single gene
D1.2.17 AHL Initiation of translation
D1.2.18 AHL Modification of polypeptides into their functional state
D1.2.19 AHL Recycling of amino acids by proteasomes
The power point presentation and the accompanying student notes are used as resources in class - together with activities, discussion, simulations and experiments.
Test your knowledge and understanding by going over these past exam questions: