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.

Among the options provided, which acid is classified as a vitamin?

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

Which of the following B group vitamins can be stored in our body?

1. Vitamin ${\mathrm{B}}_1$

2. Vitamin ${\mathrm{B}}_2$

3. Vitamin ${\mathrm{B}}_6$

4. Vitamin ${\mathrm{B}}_{12}$

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

There cyclic structures of monosaccharides are given below which of these are anomers.

1. I and II     
2. II and III
3. I and III   
4. III is anomer of I and II