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Q. No.A compound that gives a positive Fehling solution test is:
1.
Sucrose
2.
Glucose
3.
Fats
4.
Protein
Subtopic: Polysaccharides & their Importance |
87%
Level 1: 80%+
AIPMT - 2001
Hints
Which is the correct statement among the following?
| 1. | Starch is a polymer of α-glucose |
| 2. | Amylose is a component of cellulose |
| 3. | Proteins are composed of only one type of amino acid |
| 4. | In the cyclic structure of fructose, there are four carbons and one oxygen atom |
Subtopic: Polysaccharides & their Importance |
64%
Level 2: 60%+
AIPMT - 2001
Hints
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%
Level 1: 80%+
Hints
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 |
83%
Level 1: 80%+
Hints
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
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 |
89%
Level 1: 80%+
Hints
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 |
86%
Level 1: 80%+
Hints
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%
Level 1: 80%+
Hints
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 |
86%
Level 1: 80%+
Hints
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 |
80%
Level 1: 80%+
Hints
Given below are two statements:
Select the most appropriate answer from the options given below:
| Assertion (A): | Two strands of DNA are complementary to each other. |
| Reason (R): | Adenine specifically forms hydrogen bonds with guanine, whereas cytosine forms hydrogen bonds with thymine. |
| 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: DNA, RNA & Metal Ions |
83%
Level 1: 80%+
Hints
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