protein structure

Question 1

what are proteins made from

Answer 1

long chains of amino acid

Question 2

dipeptide

Answer 2

when 2 amino acid are joined together

Question 3

proteins are made up of one or more

Answer 3

polypeptides

Question 4

general structure of amino acid

Answer 4

carboxyl grp ( COOH) - right hand side
amino grp (HHN) - left hand side
R group - top
H - bottom

Question 5

what reaction is occurred when polypeptides are formed

Answer 5

condensation

Question 6

what bond is between amino acids

Answer 6

peptide bonds

Question 7

how many structural levels do proteins have and name the levels

Answer 7

4
primary, secondary, tertiary and quaternary

Question 8

primary structure

Answer 8

sequence of amino acid in the polypeptide chain

Question 9

secondary structure

Answer 9

hydrogen forms between amino acid
making it coil into an alpha helix or fold into beta pleated sheet

Question 10

tertiary structure

Answer 10

more coiled or folded of amino acid and more bonds : hydrogen bonds, disulphide and ionic bond

Question 11

quartenary structure

Answer 11

several diff polypeptide chains held together by bonds

Question 12

what bond holds together amino acid at primary structure

Answer 12

peptide bond

Question 13

what bond is held together amino acid at secondary structure

Answer 13

hydrogen bond

Question 14

what bond is held together amino acid at tertiary structure

Answer 14

ionic - attraction between neg and pos charges
disulphide
hydrogen bonds

Question 15

what bond is held together amino acid at quaternary structure

Answer 15

same as tertiary

Question 16

globular proteins

Answer 16

round, compact proteins
hydrohobic outwards and hydrophilic faced inwards
soluble and can transport easliy

Question 17

fibrous protein

Answer 17

long, insoluble
held together by lots of bonds (e.g. disulphide and hydrogen bonds)
due to being strong they are found in supportive tissues)