Thiamine (B₁) deficiency resuits in.
(1) Wernickes’ syndromes

(2) Korsakoffs’ syndromes

(3) osteonecrosis

(4) tunnel vission

FAD is a coenzyme derived from

(1) riboflavin

(2) vitamin-B₁₂

(3) thiamine

(4) niacin

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

The above diagram represent the nitrogenous bases. Identify the correct combination:

(1) A = Adenine; B = Thymine          

(2) A = Guanine; B = Thymine

(3) A = Adenine; B = Uracil               

(4) A = Guanine; B = Uracil

Which one of the following is the diagrammatic representation of a nucleotide?

(a)  (b)       (c)     (d)