Which protein is found in the maximum amount:
1.  Catalase
2.  Zinc carbonic anhydrase
3.  Transferase
4.  RUBISCO

Subtopic:  Proteins |
 95%
From NCERT
AIPMT - 1999
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Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by -

1. Base-sugar-OH

2. Base-sugar-phosphate

3. Sugar-phosphate

4. (Base-sugar-phosphate)n

Subtopic:  Nucleic Acid: Nucleotides |
 74%
From NCERT
AIPMT - 2005
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Which of the following are not secondary metabolites in plants?

1. Vinblastin, curcumin

2. Rubber, gums

3. Morphine, codeine

4. Amino acids, glucose

Subtopic:  Primary & Secondary Metabolites |
 85%
From NCERT
NEET - 2021
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Match List -I with List - II.

List-I List-II
(a) Protein I.  C-C double bonds
(b) Unsaturated fatty acid II. Phosphodiester bonds
(c) Nucleic acid III. Glycosidic bonds
(d) Polysaccharides IV. Peptide bonds


Choose the correct answer from the options given below:

Options: (a) (b) (c) (d)
1. II I IV III
2. IV III I II
3. IV I II III
4. I IV III II

Subtopic:  Nucleic Acid: Nucleotides | Proteins | Carbohydrates | Lipids |
 84%
From NCERT
NEET - 2021
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Identify the incorrect pair.
1. Lectins - Concanavalin A
2. Drugs - Ricin
3. Alkaloids - Codeine
4. Toxin - Abrin

Subtopic:  Primary & Secondary Metabolites |
 77%
From NCERT
NEET - 2021
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Following are the statements with reference to 'lipids'.

(a) Lipids having only single bonds are called unsaturated fatty acids.
(b) Lecithin is a phospholipid.
(c) Trihydroxy propane is glycerol.
(d) Palmitic acid has 20 carbon atoms including carboxyl carbon.
(e) Arachidonic acid has 16 carbon atoms.


You have to choose the correct statements out of the five given above. Choose the correct answer from the options given below:

1. (b) and (c) only

2. (b) and (e) only

3. (a) and (b) only

4. (c) and (d) only

Subtopic:  Lipids |
 78%
From NCERT
NEET - 2021
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Which of the following secondary metabolites is a polymeric substance?

1. Ricin

2. Monoterpenes

3. Curcumin

4. Rubber

Subtopic:  Introduction |
 86%
From NCERT
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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:  Introduction to Proteins |
 90%
From NCERT
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Antibodies that help to fight infectious agents are

1. Polysaccharides

2. Amino acids

3. Proteins

4. Glucose

Subtopic:  Introduction to Proteins |
 85%
From NCERT
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Which of the following is mismatched? 

1. Chitin        -      Polymer of glucosamine

2. Glycogen   -      Polymer of glucose 

3. Cellulose   -      Heteropolysaccharide

4. Inulin        -      Homopolysaccharide

Subtopic:  Carbohydrates: Starch & Glycogen |
 81%
From NCERT
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