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Summary Unit 3.3.13 - Amino acids, proteins and DNA (A-level only) £6.49
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Summary Unit 3.3.13 - Amino acids, proteins and DNA (A-level only)

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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

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  • March 23, 2023
  • 4
  • 2021/2022
  • Summary

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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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