Protein

Question 1

Amino acid

Answer 1

Molecules that combine to form proteins

Question 2

Peptide bond

Answer 2

A bond between 2 amino acids formed by a condensation reaction

Question 3

Primary structure

Answer 3

The sequence of amino acids linked together to form a polypeptide chain

Question 4

Secondary structure

Answer 4

Polypeptide backbone excluding the side chains (alpha helices and beta sheets)

Question 5

Disulphide bridge

Answer 5

Covalent links between sulphur atoms of 2 amino acids

Question 6

Alpha helix

Answer 6

Tightly coiled main chain with side chains extending outward

Question 7

Beta pleated sheet

Answer 7

Two or more segments of a polypeptide chain forming a sheet-like structure held by hydrogen bonds

Question 8

Tertiary form

Answer 8

Overall 3 dimensional arrangement of it’s polypeptide chain in space

Question 9

Quaternary form

Answer 9

Several protein chains or subunits into a closely packed arrangement

Question 10

Haemoglobin

Answer 10

A protein inside red blood cells that carry oxygen from the lungs to the tissue

Question 11

Collagen

Answer 11

Protein molecule made up of amino acids. Provides structural support to the extracellular space of tissues