The most abundant chemical in living organisms is -
1. Water.
2. Protein.
3. Carbohydrate.
4. Nucleic acid.

Subtopic:  Element Analysis |
 83%
From NCERT
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Which of the following is an example of branched
polymer?
1. Chitin.
2. Cellulose.
3. Amylose.
4. Glycogen

Subtopic:  Carbohydrates: Starch & Glycogen |
 56%
From NCERT
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During catalytic cycle of an enzyme action the binding
of the __a__ induces the __b__ to alter its shape. Here
a and b is _________
1. Substrate, enzyme.
2. Enzyme, substrate.
3. Substrate, Substrate.
4. Enzyme, Enzyme

Subtopic:  Mechanism of Enzymes |
 76%
From NCERT
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Long protein chain folded upon itself like a hollow woolen ball and gives us a 3-dimensional view of a protein belongs to
1. Primary structure
2. Secondary structure
3. Tertiary structure
4. Quaternary structure

Subtopic:  Structural Organisation of Proteins |
 85%
From NCERT
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In nucleic acid the bond between the phosphate and hydroxyl group of sugar is
1. Hydrogen bond
2. Glycosidic bond
3. Ester bond
4. Peptide bond

Subtopic:  Nucleic Acid: Nucleotides |
 76%
From NCERT
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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 |
 80%
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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Similarity between Inulin, Lecithin and Insulin is -
1. All are polymeric compound.
2. All are natural polypeptides.
3. All contains C,H,O and N.
4. None of these.

Subtopic:  Proteins | Carbohydrates | Lipids |
From NCERT
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Read the following statement (A-D) :-

(a) Each protein is a polymer of amino acids.

(b) A protein is a hetero polymer and not a
homopolymer.

(c) Dietary proteins are the source of essential
amino acid.

(d) Collagen is the most abundant protein in
whole of the biosphere.
How many of the above statement are right ?

1. Three
2. One
3. Two
4. Four

Subtopic:  Proteins |
 73%
From NCERT
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A list of different metabolites is given below in this list find out the number of primary & secondary metabolites, respectively & chooses the correct option:
Alkaloids, Abrin, Ricin, Carotenoids, Amino acids,
Glucose, Fructose, Fatty acids, Thymine, Uracil,
Lectins, Drugs.

1. Five and Six
2. Six and Six
3. Seven and five
4. Four and Eight

Subtopic:  Primary & Secondary Metabolites |
 75%
From NCERT
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