Functions of polysaccharides, Biology

FUNCTIONS OF POLYSACCHARIDES

  • Chitin is a structural component of fungal cell wall and exoskeleton of insects, crustaceans and some other arthropods.
  • Peptidoglycan or Murien is structural component of bacterial cell wall.
  • Mucilage or Slime Sheath is a mucopolysaccharide based viscous solution that is formed outside the body of many aquatic organisms to protect them from rotting effect of water, epiphytes and toxic chemicals. Mucilage may form a capsule around certain bacteria.
  • In plants pectic compounds and in animals hyaluronic acid are used as cell cement.
  • Mucus is a formed from mucoproteins and is meant for protecting lining layers of various tracts in the body from corroding chemicals and harmful microbes e.g., respiratory tract, stomach, intestine, cervix, etc.
  • Glycocalyx is a sugar coating over the cell membrane in animal cells which has several functions like

                     (a) Protection                   (b) Providing shape        (c) Attacting cations

                     (d) Sites for recognition    (e) Sites for receptors    (f) Blood group antigens  (g) Antibodies

  • Heparin is anticoagulant of blood and connective tissue.
  • Hyaluronic acid and chondroitin sulphate provide lubrication to different body parts like tendons, ligaments, skin, connective tissue, joints (as synovial fluid), central nervous system (as cerebrospinal fluid), tissues (interstitial fluid), eyes (vitreous humour), etc.
  • Pectin is used as jellying agent.
  • Agar (from red algae Gelidium, Gracilaria) is used as culture medium, emulsifying and stabilizing agent in dairy products, confectioners and cosmetics.

Monosaccharide test = Benedict's test & Fehling's test

Polysaccharide test = Iodine test

Note :- Galactosemia disease in children can be removed by giving milk less diet.

Posted Date: 10/9/2012 4:11:39 AM | Location : United States







Related Discussions:- Functions of polysaccharides, Assignment Help, Ask Question on Functions of polysaccharides, Get Answer, Expert's Help, Functions of polysaccharides Discussions

Write discussion on Functions of polysaccharides
Your posts are moderated
Related Questions
According to the Mendel's second law, in the crossing between homozygous individuals concerning two pairs of nonlinked alleles, AABB x aaBB, what are the phenotypical and genotypic

Q. Assets and capital stock accounts? At the present extend the liabilities, assets and capital stock accounts in the Adjusted Trial Balance columns to the Balance Sheet column


What happens to respiratory system in a man going up a hill?

Q. What is the structure of the adult fern within which cells undergoing meiosis can be found? In these plants meiosis takes place within structures known as sorus (plural, sor

What is the difference between transcription and translation? Transcription is the name given to the formation of RNA molecules from an open DNA chain used as a template. Trans

Erythrocytes or red blood cells: These are otherwise called Red Blood cells or corpuscles. These are the most numerous cells in the blood.There are about 4.5 to 5.5x 10 9

COMMON DISEASE OF PIG  - 1 .       FOOT AND MOUTH DISEASES 2 .       ANTHRAX 3 .       TUBERCLOSIS 4 .       SWINE FEVER - Charactrized by high fever, d

Q. Areas affected in peptic ulcer? The areas affected in peptic ulcer (due to erosion) can be: 1. Lower part of the oesophagus. 2, stomach (lesser curvature - an urn, whe

COMMON DISEASE OF CATTLE & BUFFALOES - 1 .      Anthrax - Its symptoms are high temp, painless & warmthless swellings on different body parts. Bloody discharge from na