Question

Which one of the following is a hetero-polysaccharide?
(a) Glycogen
(b) Starch
(c) Cellulose
(d) Hyaluronic acid

Answer 1

Hint: They are a main component of the extracellular matrix, and feature a key role in tissue regeneration, inflammation response, and angiogenesis, which are phases of skin wound repair.

Complete answer: Hyaluronic acid  is a hetero-polysaccharide. Hetropolysaccharide is a polysaccharide that's made from a quiet one type of monomer. Hyaluronic acid is a polysaccharide that is made up of D-glucuronic acid and N-acetyl-glucosamine. It's found in connective tissues and skin. Hyaluronic acid shows many important functions in signaling activity during embryonic morphogenesis, wound healing, and pulmonary and vascular diseases. It also acts as lubrication of synovial joints and helps in joint movement and also as an area filler, wetting agent, and flow barrier within the synovium. It also influences cancer progression and the protector of cartilage surfaces.
So, the correct answer is ‘Hyaluronic acid’.

Additional Information:
Polysaccharides are the long-chain polymers of monosaccharides and aren't sweet in taste. They are divided into two, which are
Homopolysaccharide: These are made from just one sort of monomer. Examples include the starch polymer of alpha d glucose (Storage material in plants), glycogen is additionally made from alpha d glucose (Storage material in animals), cellulose is formed from beta d glucose (present in plants cell).
Heteropolysaccharide: These are made from quite one sort of monosaccharide. Examples include Pectin, Peptidoglycan, and Agar.
- Glycogen is a polysaccharide of glucose linked by alpha- 1,4-glycosidic bonds.
- Starch is a polysaccharide of glucose linked by alpha- 1,4-glycosidic linkage.
- Cellulose is a polysaccharide of glucose linked by beta- 1,4-glycosidic linkage.

Note: Hyaluronic acid has been FDA-approved to treat osteoarthritis of the knee via intra- articular injection. Hyaluronic acid has been utilized in various formulations to make artificial tears to treat dry eyes. Hyaluronic acid was first obtained by Karl Meyer and John Palmer in 1934 from the bodily fluid within the cow's eye.