Consider the following statements:

A:  A coenzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group
B: A complete catalytic enzyme with its bound prosthetic group is called apoenzyme


Select the correct option

1. (A) is false but (B) is true

2. Both (A) and (B) are true

3. (A) is true but (B) is false

4. Both (A) and (B) are false

Subtopic:  Enzyme Cofactors |
From NCERT
NEET - 2019
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Concanavalin A is:

1. a pigment

2. an alkaloid

3. an essential oil

4. a lectin

Subtopic:  Primary & Secondary Metabolites |
 72%
From NCERT
NEET - 2019
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Which of the following glucose transporters is insulin-dependent?

1. GLUT IV

2. GLUT I

3. GLUT II

4. GLUT III

Subtopic:  Proteins |
 82%
NEET - 2019
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Which of the following organic compounds is the main constituent of Lecithin?

1. Arachidonic acid

2. Phospholipid

3. Cholesterol

4. Phosphoprotein

Subtopic:  Lipids | Introduction | Lipids: Glycerolipids, Phospholipids & Glycerol |
 85%
From NCERT
NEET - 2019
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Prosthetic groups differ from co-enzymes, in which:

1. they require metal ions for their activity.
2. they (prosthetic groups) are tightly bound to apoenzymes.
3. their association with apoenzymes is transient.
4. they can serve as co-factors in a number of enzyme-catalyzed reactions.
Subtopic:  Enzyme Cofactors |
 81%
From NCERT
NEET - 2019
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"Ramachandran plot" is used to confirm the structure of:

1. RNA

2. Proteins

3. Triacylglycerides

4. DNA

Subtopic:  Introduction | Introduction to Proteins |
 69%
From NCERT
NEET - 2019
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Which one is the most abundant protein in the animal world?

1. Trypsin                     

2. Haemoglobin

3. Collagen                   

4. Insulin

Subtopic:  Proteins | Introduction |
 93%
From NCERT
NEET - 2020
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Match the following:

(a) Inhibitor of catalytic activity of succinate dehydrogenase (i) Ricin
(b) Possess peptide bonds (ii) Malonate
(c) Cell wall material in fungi (iii) Chitin
(d) Secondary metabolite (iv) Collagen

Choose the correct option from the following:
(a) (b) (c) (d)
1. (iii) (i) (iv) (ii)
2. (iii) (iv) (i) (ii)
3. (ii) (iii) (i) (iv)
4. (ii) (iv) (iii) (i)
Subtopic:  Proteins | Enzyme Inhibition | Primary & Secondary Metabolites | Carbohydrates: Cellulose, Chitin, Inulin & Agar |
 89%
From NCERT
NEET - 2020
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Identify the substances having a glycosidic bond and peptide bond, respectively in their structure:

1.  Glycerol, trypsin

2.  Cellulose, lecithin

3.  Inulin, insulin

4.  Chitin, cholesterol 

Subtopic:  Carbohydrates |
 63%
From NCERT
NEET - 2020
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Identify the basic amino acid from the following.

1. Glutamic Acid

2. Lysine

3. Valine

4. Tyrosine

Subtopic:  Amino Acids |
 84%
From NCERT
NEET - 2020
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