AMINO ACIDS ( POLYPEPTIDES )

Question 1

What are the primary and secondary protein structures

Answer 1

PRIMARY
- primary structure of a protein is a chain of amino acids (polypeptides) and these are bonded together by peptide links

SECONDARY
- it occurs when a primary protein folds into a structure (e.g. a-helix and b pleated sheet)

Question 2

What are the tertiary and Quaternary protein structures?

Answer 2

TERTIARY
- when a single polypeptide chain has multiple secondary structures

QUATERNARY
- the proteins overall structure. it is when multiple tertiary protein structures together form a larger protein

Question 3

What are the bonds between amino acids called and what do they form between?

Answer 3

the bonds are called peptide links

they form between the amino and carboxylic groups in the amino acids

Question 4

Important proteins with these structures (primary to quaternary)

Answer 4

enzymes
haemoglobin
anitbodies

Question 5

Why are amino acids important?

Answer 5

they are the most basic building blocks of protein

they bond together to produce polypeptides
these polypeptides are a proteins primary structure

Question 6

What are the two functional groups in amino acids called?

Answer 6

amine group and carboxylic acid group