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
what cell organelle does photosynthesis take place in?

Define Ziehl-Neelsen Staining Technique? Ziehl-Neelsen staining is used for staining these bacteria. The technique was discovered first by Robert Koch during his pioneering inv

Techniques: operation is done under general endo tracheal anaesthesia. Patient is positioned with the left chest tilted up using a sand bag under left chest. Left antero latera

Explain the Occurrence of Vitamin C Vitamin C (ascorbic acid) is an active ingredient present in any animal or vegetable cell which occurs in the plant in free form and also bo

Q. Concerning enzymatic reactions, how dissimilar are the graphic curve of the variation of the speed of a reaction as function of substrate concentration and the curve of variatio

C o w - po x (vaccinia) E p idemiology: This infection, although mostly occurring in cows, sometimes also occurs in buffaloes. Under natural conditions, t

2 phases of oogenesis

Q. What is the acrosome of the sperm cell? How is it formed? The acrosome is a structure that contains a great number of digestive enzymes it is formed by the union of Golgi ap

What are the types of good in the demand curve? Some types of good are as follows: • Normal good: When incomes of consumers/households increase the quantity demanded wo

PHYLUM ANNELIDA Definition  and Introduction Bilateral and  protosomial  eucoelomate  eumetazoans  whose  long   narrow and  wormlike body  is division  into  ring like  t