3.6 Structure Of Proteins

Question 1

Peptides

Answer 1

Polymers made up of amino acids.

Question 2

Protein

Answer 2

Consists of one of more polypeptides, complex macromolecules

Question 3

Amino acid

Answer 3

Composed of amino group, side chain and carboxyl group

Question 4

Thin layer chromatography (TLC)

Answer 4

Technique used to separate individual components of a mixture. Used to identify a mixture of amino acids in a solution

Question 5

Primary structure

Answer 5

Sequence of amino acids

Question 6

Secondary structure

Answer 6

Oxygen, hydrogen, nitrogen atoms of the basic repeating structure of the amino acids interact. Alpha helices or beta sheets

Question 7

Tertiary structure

Answer 7

Folding of protein into its final shape. Can include sections of secondary structure

Question 8

Quaternary structure

Answer 8

Association of multiple individual proteins called subunits.

Question 9

Protease

Answer 9

Enzymes used to catalyse the reverse reaction, turning peptides back into amino acids

Question 10

Biuret test

Answer 10

Tests for proteins, solution turns purple in presence of proteins