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 |

63%

Level 2: 60%+

1

2

3

4

Please attempt this question first.

Hints

Please attempt this question first.

Q13:

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 |

60%

Level 2: 60%+

1

2

3

4

Please attempt this question first.

Hints

Please attempt this question first.

Q12:

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%+

1

2

3

4

Please attempt this question first.

Hints

Please attempt this question first.

Q27:

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 |

95%

Level 1: 80%+

1

2

3

4

Please attempt this question first.

Hints

Please attempt this question first.

Q26:

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 |

72%

Level 2: 60%+

1

2

3

4

Please attempt this question first.

Hints

Please attempt this question first.

Q11:

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%+

1

2

3

4

Please attempt this question first.

Hints

Please attempt this question first.

Q15:

Match List–I (Carbohydrates) with List – II (Cyclic Structures) and select the correct option:

	List - I (Carbohydrates)		List - II (Cyclic Structures)
A.	α − D −Glucopyranose	1.
B.	β −D − Glucopyranose	2.
C.	α − D − Fructofuranose	3.
D.	β − D −Fructofuranose	4.