Proteins

Question 1

mino acids are joined by ____ to form polypeptide.

Answer 1

peptide, covalent

Question 2

Out of 20 amino acids, 8 of them are essential amino acids. This means these amino acids

Answer 2

must be taken through our diet

Question 3

A peptide bond formation is a

Answer 3

dehydration reaction

Question 4

The twisting, coiling and folding of the polypeptide chain results in the formation of __ structure of protein.

Answer 4

v 3D

Question 5

Which of the following bonds stabilize the secondary structure of protein?

Answer 5

hydrogen

Question 6

The key difference between tertiary and quaternary structure of protein is

Answer 6

the tertiary structure has one polypeptide chain while quaternary structure has more than one polypeptide

Question 7

To simply explain protein denaturation, we can say

Answer 7

the protein’s shape has been changed

Question 8

vProteins denature because

Answer 8

the bonds holding the shape of protein have been distrupted

Question 9

Which of the following would NOT lead to protein denaturation?

Answer 9

cold

Question 10

Heat can denature a protein because

Answer 10

it leads to vigourous vibration of atoms vibrate that breaks the bonds in protein