Which one of the following pairs in not correctly matched?

1.	Vitamin-B12-Pernicious anaemia
2.	Vitamin-B6-Loss of appetite
3.	Vitamin-B1-Beri-beri
4.	Vitamin-B3-Pellagra

Nickel contributes to the formation of one of the following

Thiamine (B₁) deficiency resuits in

FAD is a coenzyme derived from

Proteins are

Amino acid is a:

A. 

B.  

C. 

Which of the above is Zwitterionic form?

(1) B                    

(2) C                  

(3) A                  

(4) All are correct

The quaternary structure of a protein:

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)

Lecithin is:

(1) Phospholipid   

(2) Carbohydrate  

(3) Protein            

(4) Amino acid