Amino acid

Question 1

Desc primary structure of proteins

Answer 1

The unique sequence of amino acid that make up protein or polypeptide chain

Question 2

Desc secondary structure of proteins

Answer 2

after synthesis polypeptide chains are folded into different shapes

eg. alpha helices and beta pleated sheets

Question 3

Desc tertiary structure of proteins

Answer 3

Alpha helices and beta sheets held together by weak interactions

it is the final 3D structure of protein related to shaping of secondary structure

Question 4

What held secondary structure of protein together

Answer 4

hydrogen bonds

Question 5

polypeptides are formed by?

Answer 5

more than 2 amino acid

Question 6

2 amino acid form?

Answer 6

di-peptide

Question 7

protein are made up of?

Answer 7

polypeptide which are amino acid join with peptide bonds

Question 8

tertiary structure are held by which 4 bonds?

Answer 8

Disulphide bonds
Ionic bonds
Hydrogen bonds
Hydrophobic and hydrophilic interaction

Question 9

Disulphide bonds

Answer 9

2 cysteine found tgt
sulphur double bond (S=S) in cysteine monomers

Question 10

Ionic bond

Answer 10

Bonding between 2 opposite charge R groups close to each other

Question 11

Hydrogen bonds

Answer 11

bonding between oxygen of amino acid and hydrogen of another amino acid

Question 12

Hydrophobic and hydrophilic interactions

Answer 12

form by amino acid with non polar side chains cluster in the core of protein

Question 13

Denaturation occur due to?

Answer 13

Physical agents: Heat, violent shaking, x-ray, UV radiation

Chemical agents: Acids, alkalies, organic solvents (ether, alcohol), urea

Question 14

structure of protein sequence are affected by?

Answer 14

amino acid sequence