Proteins (OCR A-Level Biology A): Flashcards
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Practise the cards
10 cards from this deck
Elements in proteins (mnemonic)
Elements in proteins (mnemonic)
CHONS (C, H, O, N, S)
Monomers of proteins
Monomers of proteins
Amino acids
Amino acid part determining identity
Amino acid part determining identity
R group (variable side chain)
Number of different amino acids in proteins
Number of different amino acids in proteins
20
Reaction forming peptide bonds
Reaction forming peptide bonds
Condensation reaction (releases water)
Four levels of protein structure
Four levels of protein structure
Primary, secondary, tertiary, quaternary
Primary structure definition
Primary structure definition
Sequence of amino acids in polypeptide
Two types of secondary structure
Two types of secondary structure
Alpha helix and beta pleated sheet
Solubility: globular vs fibrous
Solubility: globular vs fibrous
Globular: soluble; Fibrous: insoluble
Biuret test positive colour
Biuret test positive colour
Mauve/purple