Proteins

Question 1

Functions

Answer 1

Exchange, transport, enzymes, hormones, structural support.

Question 2

Formation of polypeptides

Answer 2

AA join through condensation reaction to create a peptide bond. Join to form long chains on the ribosomes

Question 3

Haemoglobin

Answer 3

Globular protein transports oxygen and carbon dioxide in the blood, has 4 polypeptide chains.

Question 4

Primary structure

Answer 4

The types and sequence of AA within a polypeptide chain

Question 5

Secondary structure

Answer 5

Polar groups within chain react with each other and form hydrogen bonds. Produce alpha helix or beta pleated sheet

Question 6

Tertiary structure

Answer 6

Stabilised trough interactions among the r-groups, includeing ionic bonds, hydrogen bonds, disulphide bonds, disulphide bridges, and hydrophobic interactions. Results in fibrous or globular forms

Question 7

Quaternary structure

Answer 7

Multiple folds to create a bigger structure