proteins

Question 1

Describe how amino acids are joined to make a dipeptide

Answer 1

Condensation reaction creates a peptide bond between the OH of the carboxyl group and the H of the amine group

Question 2

what is the primary protein structure

Answer 2

the sequence of amino acids in the polypeptide chain

Question 3

what is the polypeptide chain

Answer 3

chain of amino acids joined by several condensation reactions forming peptide bonds

Question 4

what is the secondary protein structure

Answer 4

the sequence of amino acids causes parts of a protein molecule to bend into alpha helixes or fold into beta pleated sheets which are held by hydrogen bonds

Question 5

what is the tertiary protein structure

Answer 5

further folding of the secondary structure to form unique 3d shape held in place by ionic, hydrogen and disulphide bridges between the r groups of different amino acids

Question 6

what is the quaternary protein structure

Answer 6

a protein made up of more than one polypeptide chain

Question 7

what is the importance of the primary protein structure

Answer 7

the sequence of amino acids affects where the hydrogen, ionic and disulphide bonds form which will result in a different 3d shape and the creation of a different protein

Question 8

what are the differences between fibrous and globular proteins

Answer 8

-globular are circular 3d shape and souble in water
-fibrous proteins are repetitive sequences of amino acids that are insoluble in water