Question

Read the following statements and identify the correct ones regarding polysaccharides.
1. Polysaccharides are made of many sugars joined together.
2. Cellulose is a polysaccharide made of less than 10 monomeric units.
3. Polysaccharides are found as a part of the acid insoluble pellet.
4. In a polysaccharide chain, the right end is called reducing end and the left end is called non-reducing end.

• A. All are correct
• B. All except 2
• C. Only 1 and 4
• D. Only 2

Answer 1

Answer: (B)

Polysaccharides (type of carbohydrates) comes under the class of macromolecules. Macromolecules form the part of retentate (acid insoluble fraction) when a living tissue is treated with trichloroacetic acid. Polysaccharides form long chains of sugars made by joining same or different monosaccharides together. Cellulose is a polysaccharide having more than 10 units of only one type of monosaccharide - glucose. In a polysaccharide chain (say glycogen), the right end is called the reducing end and the left end is called the non-reducing end as the right end cannot reduce oxidizing agents. Thus, only statement 2 is incorrect.