Adult human haemoglobin consists of:

(1) 2 subunits (β, β)                           

(2) 2 subunits (α, α)

(3) 4 subunits (2α, 2β)                      

(4) 3 subunits (2α, 1β)

Long protein chain folded upon itself like a hollow woolen ball and gives us a 3-dimensional view of a protein belongs to
1. Primary structure
2. Secondary structure
3. Tertiary structure
4. Quaternary structure

Which of the following statements is not correct about proteins?

1. The first amino acid of all the proteins is also known as N-terminal amino acid

2. In proteins, only right handed helics are observed

3. $\alpha$- helics are tertiary structures of proteins 

4. Primary structure of a protein dictates its secondary and tertiary conformations

Identify the incorrect statement regarding the structure of proteins:

Which of the following is not the function of protein

(1)Act as hormones

(2)act as enzymes

(3)act as genetic material

(4)fight against infections

G.N. Ramachandran discovered the structure of collagen which is a/an:

1. Alpha helix

2. Beta pleated sheet

3. Triple helix

4. Icosahederon

The quaternary structure of a protein:

(1) Consists of 4 subunits - hence the name quaternary

(2) Is unrelated to the function of the protein

(3) Both (a) and (b)

(4) Depends on the 1° structure of subunits