amino acids and proteins

Question 1

state some exapmles of roles of proteins

Answer 1

transport, storage, enzyme catalysis, motion, skeletal support, immune protection, nerve impulse transmission, control of metabolism

Question 2

state the potentially acidic amino acid group

Answer 2

COOH

Question 3

state the potentailly basic amino acid group

Answer 3

NH2

Question 4

state 3 post-synthetic modifications of amino acid side chains

Answer 4

hydroxyproline, y-carboxyglutamate, o-phosphoserine

Question 5

describe the primary structure of a protein

Answer 5

sequence of amino acids in a polypeptide chain

Question 6

describe the secondary structure of a protein

Answer 6

interactions of amino acids close to each other in a polypeptide chain, alpha helix and beta pleated sheet

Question 7

describe the tertiary structure of a protein

Answer 7

interactions between R groups fold proteins into 3D shape

Question 8

describe the quaternary structure of a protein

Answer 8

3D interactions of protein subunits in protein with more than 1 polypeptide chain