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Q. No.Reducing sugars are -
1.
Carbohydrates that reduce Fehling’s solution and Tollen’s reagent.
2.
Carbohydrates that reduce only Tollen’s reagent.
3.
Carbohydrates that reduce only Fehling’s solution .
4.
Carbohydrates that reduce HI
Subtopic: Carbohydrates - Classification & D-L configuration |
92%
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The term glycosidic linkage means :
| 1. | Two monosaccharide units bonded by an oxygen atom. |
| 2. | Two monosaccharide units bonded by a sulphur atom. |
| 3. | Two peptide units bonded by an oxygen atom. |
| 4. | Two peptide units bonded by an hydrogen atom. |
Subtopic: Carbohydrates - Classification & D-L configuration |
82%
From NCERT
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The secondary structure of protein is represented by:
| 1. | α-helix structure | 2. | β-pleated sheet structure |
| 3. | Both 1 and 2 | 4. | None of the above |
Subtopic: α - Amino Acids, Peptide Bond, Proteins & Structure |
88%
From NCERT
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α-helix structure of proteins is stabilized by :
| 1. | H-bonds formed between the −SH and C=O group. |
| 2. | H-bonds formed between the −NH and C=O group. |
| 3. | Ionic bonds formed between the −SH and C=O group. |
| 4. | Ionic bonds formed between the −NH and C=O group. |
Subtopic: α - Amino Acids, Peptide Bond, Proteins & Structure |
85%
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Amino acids exhibit amphoteric behavior as -
1. They can act both as an acid and as a base.
2. They can act only as an acid but not as a base.
3. They can act only as a base but not an acid.
4. None of the above.
Subtopic: α - Amino Acids, Peptide Bond, Proteins & Structure |
95%
From NCERT
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The denaturation of proteins indicates -
| 1. | The primary structure of a protein is destroyed and the enzyme loses it's activity. |
| 2. | The primary structure of a protein is destroyed and the enzyme enhances it's activity. |
| 3. | The secondary and tertiary structures of a protein are destroyed and the enzyme loses it's activity. |
| 4. | The secondary and tertiary structures of a protein are destroyed and the enzyme enhances it's activity. |
Subtopic: α - Amino Acids, Peptide Bond, Proteins & Structure |
85%
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A nucleoside is different from a nucleotide as:
| Nucleoside | Nucleotide | |
| 1. | Sugar, Protein | Sugar, Protein, Phosphoric acid |
| 2. | Fatty acid, Base | Fatty acid, Base, Phosphoric acid |
| 3. | Sugar, Base | Sugar, Base, Phosphoric acid |
| 4. | Sugar, Base, Phosphoric acid | Sugar, Base |
Subtopic: DNA, RNA & Metal Ions |
78%
From NCERT
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Monosaccharides are:
| 1. | Carbohydrates that can't be hydrolysed further to give simpler units of polyhydroxy aldehyde or ketone. |
| 2. | Classified on the basis of the number of carbon atoms and the functional group present in them. |
| 3. | The monomers of carbohydrates. |
| 4. | All of the above. |
Subtopic: Carbohydrates - Classification & D-L configuration |
85%
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Consider the following statements:
| a. | Proteins are synthesized by various RNA molecules in the cell and commands for protein synthesis are present in DNA. |
| b. | RNA contains β-D-ribose and DNA contains β-D-2-deoxyribose. |
| c. | RNA contains uracil and DNA contains thymine. |
| d. | RNA molecules are of three types, that is, messenger RNA, ribosomal RNA, and transfer RNA |
The incorrect statement(s) are :
1. a, b and d
2. a, b, c and d
3. a, b and c
4. None of the above.
Subtopic: DNA, RNA & Metal Ions |
71%
From NCERT
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The helical structure of a protein is stabilized by:
| 1. | Hydrogen bonds | 2. | Ether bonds |
| 3. | Peptide bonds | 4. | Dipeptide bonds |
Subtopic: α - Amino Acids, Peptide Bond, Proteins & Structure |
80%
From NCERT
AIPMT - 2004
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