amino acids, proteins and structures<3

Question 1

a, what are amino acids,

b. what is produced
c. what does each amino acid contain?

Answer 1

a. sub units of all proteins, amino derivatives of carboxylic acid
b. large variety of polypeptides produced.
c. amino group (HNH) carboxyl (COOH) and a R group

Question 2

what are the properties of amino acids?

Answer 2

Zwitterions- posses both positive and negative charge
20 amino acids, 8 functional groups
solutions of amino acids are buffers and resist change in PH

Question 3

what happens when amino acids are in acid solution

Answer 3

NH2 combines with H+ of acid to form NH3+

Question 4

what happens when amino acids are in alkali

Answer 4

COOH group combines with OH- ions from alkali to form COO

Question 5

side chains that are polar are hydrophobic or hydrophilic?

Answer 5

hydrophillic

Question 6

what side chains of water fold in?

Answer 6

HYDROPHOBIC

Question 7

side chains heavily influence what?

Answer 7

3D shape and conformation of protein

Question 8

CLASSIFICATION OF AMINO ACIDS?

Answer 8

1. HYDROPHOBIC- non polar R group.
2. POLAR - neutral R group
3. POSITIVLEY CHARGED - positive R group at PH 7.4
4. NEGATIVE CHARGED- negative R group at PH 7.4