The incorrect statement about carbohydrates is : 

1. Maltose is a reducing sugar.

2. They are stored in the animal body as glycogen.

3. Amylopectin constitutes about 15-20% Of starch.

4. Cellulose is composed of only β-D- glucose units.

Subtopic:  Carbohydrates - Classification & D-L configuration |
 75%
From NCERT
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The structural feature which distinguishes proline from other natural α-amino acids is -

1. It is optically inactive.

2. It contains an aromatic group.

3. It is a dicarboxylic acid.

4. It is a secondary amine.

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 50%
From NCERT
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If α—D—glucose is dissolved in water and kept for a few hours, the major constituent(s) present in the solution is/are:

1. α —D—glucose.
2. The mixture of ß—D-glucose and open-chain D-glucose.
3. Open chain D-glucose.
4. The mixture of α —D—glucose and ß—D-glucose.

Subtopic:  Carbohydrates - Classification & D-L configuration |
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The compound that does not reduce Benedict's solution is: 

1. Glucose 2. Fructose
3. Sucrose 4. Aldehyde
Subtopic:  Polysaccharides & their Importance |
 75%
From NCERT
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Cellulose upon acetylation with excess acetic anhydride/H2SO4 (catalytic) gives cellulose triacetate whose structure is–

1.  
2.
3.
4. 
Subtopic:  Carbohydrates - Classification & D-L configuration |
 56%
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The two forms of D-Glucopyranose are called : 


1. Anomers

2. Epimers

3. Enantiomers

4. Diastereoisomers

Subtopic:  Carbohydrates - Classification & D-L configuration |
 79%
From NCERT
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A hormone that contains iodine is-

1. Insulin 2. Testosterone
3. Adrenaline 4. Thyroxine
Subtopic:  Vitamins, Hormones & Enzymes |
 91%
From NCERT
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The non-essential amino acid among the following is:
1. Lysine
2. Valine
3. Leucine
4. Alanine

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 66%
From NCERT
NEET - 2019
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Enzymes that utilize ATP in phosphate transfer require an alkaline earth metal (M) as the cofactor. M is:

1. Sr 2. Be
3. Mg 4. Ca
Subtopic:  Vitamins, Hormones & Enzymes |
 81%
From NCERT
NEET - 2019
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An optically inactive amino acid is-

1. Lactic acid 2. Serine
3. Alanine 4. Glycine
Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 86%
From NCERT
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