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 The correct structure(s) of D-glyceraldehyde is/are:

1. 2.
3. 4. All of these
Subtopic:  Carbohydrates - Classification & D-L configuration |
 75%
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Identify the sugar among the following that does not act as reducing sugar.

1. Glucose
2. Fructose
3. Lactose
4. Sucrose

Subtopic:  Carbohydrates - Classification & D-L configuration |
 88%
From NCERT
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D-glucose upon treatment with nitric acid gives:

1.      2.
3. 4.
Subtopic:  Carbohydrates - Classification & D-L configuration |
 73%
From NCERT
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In both DNA and RNA, heterocyclic base and phosphate ester linkages are at:

1. C5' and C1' respectively of the sugar molecule.
2. C1and C5' respectively of the sugar molecule.
3. C2' and C5' respectively of the sugar molecule.
4. C5' and C2' respectively of the sugar molecule.
Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 79%
From NCERT
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The correct statements regarding "Denaturation" are:

(a) Denaturation of proteins causes the loss of secondary and tertiary structures of the protein. 
(b) Denaturation leads to the conversion of a double strand of DNA into a single strand.
(c) Denaturation affects the primary structure which gets distorted.

1. (a), (b) and (c)
2. (b) and (c)
3. (a) and (c)
4. (a) and (b)

Subtopic:  Denaturation of Proteins & Chemical Properties |
 86%
From NCERT
AIPMT - 2011
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The structure that represents the peptide chain is:

1.
2.
3.
4.
Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 63%
From NCERT
AIPMT - 2004
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When 10 units of monosaccharides are condensed to form oligosaccharides, the number of water molecules eliminated are:
1. 10 2. 9
3. 8 4. 7
Subtopic:  Polysaccharides & their Importance |
 84%
From NCERT
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Identify the anomeric carbon in the given structure of \(\alpha-D-\) glucopyranose:
1. C1 2. C2 and C3
3. C4 and C5  4. C6
Subtopic:  Carbohydrates - Classification & D-L configuration |
 81%
From NCERT
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Given below are two statements: 

Assertion (A): Glycine must be taken through diet.
Reason (R): It is an essential amino acid.
   
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 72%
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Among the following, a disaccharide is:

1.  Fructose
2.  Maltose
3.  Cellulose
4.  Amylopectin
Subtopic:  Carbohydrates - Classification & D-L configuration |
 88%
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