proteins and their functions

Question 1

what are proteins made of

Answer 1

polymers of amino acids

Question 2

what is the structure of an amino acid

Answer 2

amine group
residual group
carboxylic acid group

Question 3

what’s different in all amino acids

Answer 3

the residual group
some are positively or negatively charged, some are neutral
20 different amino acids

Question 4

what do two amino acid in a condensation reaction produce

Answer 4

dipeptide and water
adding more amino acids would form a polypeptide

Question 5

what’s the primary structure of a protein

Answer 5

the sequence of amino acids in the polypeptide

Question 6

what’s the secondary structure of a protein

Answer 6

-polypeptide must be formed in its regular structure
-secondary structure is held into position by hydrogen bonds which form between the amine group of 1 amino acid and the carboxylic acid group of another amino acid further down the chain

Question 7

what is the tertiary structure of a protein

Answer 7

-poly peptide may be folded into an irregular fashion
-gives the protein a 3 dimensional shape which is held into position by bonds that form between specific r groups of amino acids
-these bonds could be hydrogen bonds, ionic bonds ore disulfide bridges (if the r group contains sulfur)

Question 8

what’s the quaternary structure of proteins

Answer 8

-several polypeptide chains may be folded together and held together with hydrogen bonds, ionic bonds or disulfide bridges