Nickel contributes to the formation of one of the following

(1) urease                               

(2) dehydrogenase

(3) rubisco protein                   

(4) nitrate reductase

Subtopic:  Enzymes Classification |
AIIMS - 2011
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Thiamine (B1) deficiency resuits in.
(1) Wernickes’ syndromes

(2) Korsakoffs’ syndromes

(3) osteonecrosis

(4) tunnel vission

 65%
AIIMS - 2009
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FAD is a coenzyme derived from

(1) riboflavin

(2) vitamin-B12

(3) thiamine

(4) niacin

Subtopic:  Enzyme Cofactors |
 53%
AIIMS - 2009
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Proteins are

(1) homopolymer

(2)heteropolymer

(3)homogenous mixture of amino acids

(4)heterogenous mixture of amino acids

 76%
From NCERT
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Amino acid is a:

(1) Substituted methane                   

(2) Substituted ethane

(3) Any acid having amino group       

(4) Derivative of indol acetic acid

Subtopic:  Introduction to Proteins |
 75%
From NCERT
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A. 

B.  

C. 

Which of the above is Zwitterionic form?

(1) B                    

(2) C                  

(3) A                  

(4) All are correct

Subtopic:  Zwitter ion & Peptide Bond |
 66%
From NCERT
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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

Subtopic:  Structural Organisation of Proteins |
From NCERT
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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)

Subtopic:  Structural Organisation of Proteins |
 91%
From NCERT
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Lecithin is:

(1) Phospholipid   

(2) Carbohydrate  

(3) Protein            

(4) Amino acid

Subtopic:  Lipids: Glycerolipids, Phospholipids & Glycerol |
 93%
From NCERT
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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

Subtopic:  Double Helix : Watson & Crick Part 1 | Double Helix : Watson & Crick |
 76%
From NCERT
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