The functional groups present in zwitter ion are:

1. -NH2 , -COOH 

2. -NH2 , SO3H 

3. Both (1) and (2) 

4. None of the above

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
Level 3: 35%-60%
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The term anomers of glucose refer to:

1. Isomers of glucose that differ in configurations at carbons one and four (C-1 and C-4)
2. A mixture of (D)-glucose and (L)-glucose 
3. Enantiomers of glucose
4. Isomers of glucose that differ in configuration at carbon one (C-1)
Subtopic:  Carbohydrates - Classification & D-L configuration |
 69%
Level 2: 60%+
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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. C1' and 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%
Level 2: 60%+
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Given below are two statements:
Statement I:  Maltose is formed by C1-C4 glycosidic linkage between two αD(+) glucose units that are reducing sugar.
Statement II:  Maltose is formed by C1-C6 glycosidic linkage between two αD(+) glucose & βD(+) glucose.

In the light of the above statements, choose the most appropriate answer from the options given below:
1. Both Statement I and Statement II are correct.
2. Both Statement I and Statement II are Incorrect.
3. Statement I is correct but Statement II is incorrect.
4. Statement I is incorrect but Statement II is correct.
Subtopic:  Polysaccharides & their Importance |
 80%
Level 1: 80%+
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Compound 'A' on hydrolysis gives compound 'B', which on reaction with \(Br_2 \) water forms gluconic acid.
'A' originally has 
\(\beta\)- glycosidic linkages. Determine compound 'A':

1. Starch
2. Cellulose
3. Amylose
4. Amylopectin
Subtopic:  Polysaccharides & their Importance |
 74%
Level 2: 60%+
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Which force is responsible for the stability of the helical structure in α-helix protein?

1. Vander walls force
2. Hydrogen bonding
3. \(\pi\) interaction
4. Dipole interaction
Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
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Level 1: 80%+
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The secondary structure of a protein refers to:

1. α-Helical backbone

2. Hydrophobic interactions

3. Sequence of α-amino acids

4. Fixed configuration of the polypeptide backbone

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 84%
Level 1: 80%+
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Which one of the following is a water-soluble vitamin, that is not excreted easily?
1. Vitamin B2 2. Vitamin B1
3. Vitamin B6 4. Vitamin B12
Subtopic:  Vitamins, Hormones & Enzymes |
 88%
Level 1: 80%+
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A nitrogenous base is present in RNA nucleotides but not in DNA nucleotides. How many oxygen atoms does this base contain?

1. Three (3) 2. Two (2)
3. Four (4) 4. One (1)
Subtopic:   DNA, RNA & Metal Ions |
 64%
Level 2: 60%+
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Given below are two statements.
Assertion (A): Amylose is a water-insoluble component.
Reason (R): Amylose is a long linear molecule with more than 200 glucose units.
In light of the above statements, choose the correct answer from the options given below.
1. Both (A) and (R) are True and (R) is the correct explanation for (A).
2. Both (A) and (R) are True but (R) is not the correct explanation for (A). 
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Polysaccharides & their Importance |
 61%
Level 2: 60%+
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