In disaccharides, if the reducing groups of monosaccharides, i.e., aldehydic or ketonic groups are bonded, these are non-reducing sugars. Which of the following disaccharide is a non-reducing sugar?

1.
2.
3.
4.

Carbon atoms of pentose sugars of nucleotides having phosphodiester linkage are:
1. 5' and 3'
2. 2' and 5'
3. 5' and 5'
4. '3 and 3'

Nucleic acids are the polymers of : 
1. Nucleosides
2. Nucleotides
3. Bases
4. Sugars

The incorrect statement among the following regarding glucose is:

Each polypeptide in a protein has amino acids linked with each other in a specific sequence. This sequence of amino acids is said to be:

1. Primary structure of proteins

2. Secondary structure of proteins

3. Tertiary structure of proteins

4. Quaternary structure of proteins

 RNA does not contain:
1. Adenine
2. Uracil
3. Thymine
4. Cytosine

DNA does not have:
1. Adenine
2. Thymine
3. Cytosine
4. Uracil

Which one of the following reactions of glucose can be explained only by its cyclic structure?

 D configuration is shown by:

(i)	(ii)	(iii)

1. i, ii and iii
2. ii and iii
3. i and ii
4. Only iii

Structure of disaccharide formed by glucose and fructose is given below. Identify anomeric carbon atoms in monosaccharide units.

1. 'a' carbon of glucose and 'a' carbon of fructose

2. 'a' carbon of glucose and 'e' carbon of fructose

3. 'a' carbon of glucose and 'b' carbon of fructose

4. 'f' carbon of glucose and 'f' carbon of fructose