Which of the following structure of protein is absolutely necessary for the many biological activities of proteins? 
1. Primary
2. Secondary
3. Tertiary
4. Quaternary
 

Subtopic:  Proteins |
 81%
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Antibodies that help to fight infectious agents are
1. Polysaccharides
2. Amino acids
3. Proteins 
4. Glucose
 
Subtopic:  Proteins |
 86%
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The tertiary structure of proteins can be destroyed by
1. High energy radiations 
2. High temperature
3. Drastic changes in pH
4. All of these
Subtopic:  Enzymes |
 85%
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Select the false statement.
1. Artificial silk is a polysaccharide
2. Natural silk is a protein
3. collagen proteins forms  intercellular ground substance
4. Plant proteins are first class proteins
 
Subtopic:  Proteins |
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Select the option that represents aromatic amino acid?
1. S
2. Y 
3. C 
4. E
 
Subtopic:  Proteins |
 51%
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Beta Pleated structure in a protein is associated with which level of structure organisation?
1. Primary
2. Secondary
3. Tertiary
4. Quaternary
Subtopic:  Proteins |
 82%
From NCERT
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Unsaturated fats are made saturated by 
1. Polymerisation
2. Dehydrogenation
3. Hybridisation 
4. Hydrogenation
 
Subtopic:  Lipids |
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Arachidonic acid has
1. 20 carbons excluding carboxyl carbon
2. 20 carbons including carboxyl carbon
3. 16 carbons excluding carboxyl carbon
4. 16 carbons including carboxyl carbon
Subtopic:  Lipids |
 86%
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Lecithin is 
1. Simple lipid
2. Derived lipid
3. Phospholipid 
4. Steroids
 
Subtopic:  Lipids |
 89%
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Basic unit of a nucleic acid is
1. pentose sugar 
2. Phosphoric acid
3. Nucleotide
4. All of these
Subtopic:  Nucleic Acid |
 54%
From NCERT
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