Summary Unit 3.3.13 - Amino acids, proteins and DNA (A-level only)
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Unit 3.3.13 - Amino acids, proteins and DNA
Institution
AQA
Detailed notes on the AQA A level topic, amino acids, proteins and DNA
Amino acids, thin layer chromatography and calculating Rf values are described in details with diagrams and calculations where necessary
Unit 3.3.13 - Amino acids, proteins and DNA
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Amino acids, proteins and DNA
Amino acids
amino acids
amino acids have an amino group (-NH2) and a carboxyl group (-COOH)
Amino acids are amphoteric → they have acidic and basic properties
amino acids have an organic side chain (represented by R) with the
exception of glycine where R is hydrogen
Amino acids (except glycine) have chiral molecules as they have 4
different groups around a central carbon atom. they rotate plane polarised
light
Amino acids are named in 2 different ways → they have a common name
and a systematic name (using IUPAC rules)
Amino acids, proteins and DNA 1
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