B1.6 Proteins Flashcards
1
Q
General protein structure
A
R
⬆️
H2N - C - COOH
⬇️
H
2
Q
A protein consists of
A
Polymers made of amino acids
3
Q
What is a peptide bond
A
A bond formed in a condensation reaction in 2 amino acids
4
Q
The primary structure is
A
The sequence of amino acids
(Peptide bonds)
5
Q
The secondary structure is
A
The folding of polypeptide chains to form Alpha helix/beta pleated sheets
Hydrogen bonding between peptides
6
Q
Tertiary structure
A
3D folding
Hydrogen, ionic bonding
Disulfide bridges
7
Q
Quartnernary structure
A
2x Polypeptide chains together
8
Q
Biuret test for proteins
A
Add equal volume of NaOH to food sample
Add CusO4
Purple colour forms
