Macromolecule chitin is [2013]
1. Nitrogen containing polysaccharide
2. Phosphorous containing polysaccharide
3. Sulphur containing polysaccharide
4. Simple polysaccharide
Cellulose, the most important constituent of plant cell wall is made of [1998]
1. Unbranched chain of glucose molecules linked by 1, 4-glycosidic bond
2. Branched chain of glucose molecules linked by 1, 4-glycosidic bond in straight chain and , 1, 6-glycosidic bond at the site of branching
3. Unbranched chain of glucose molecules linked by 1, 4-glycosidic bond
4. Branched chain of glucose molecules linked by 1, 6-glycosidic bond at the site of branching
In which of the following groups, all the three are examples of polysaccharides?
1. Starch, glycogen, cellulose
2. Sucrose, maltose, glucose
3. Glucose, fructose, lactose
4. Galactose, starch, sucrose
The chitinous exoskeleton of arthopods is formed by the polymerisation of
(1) keratin sulphate and chondroitin sulphate
(2) D-glucosamine
(3) N-acetyl glucosamine
(4) lipoglycans
Cotton fibres mainly contains
(1) cellulose
(2) glycogen
(3) protein
(4) lipid
Which of the following is a homopolysaccharide?
(1) Heparin
(2) Inulin
(3) Pectin
(4) Hyaluronic acid
Cellulose is present in
(1)cotton fibres
(2)Paper
(3)Cell wall of plants
(4)All of these
1. pythium
2. Xanthomonas
3. Pseudomonas
4. Saccharomyces
The chitinous exoskeleton of arthropods is formed by the polymerisation of–
1. D- glucosamine
2. N- acetyl glucosamine
3. Lipoglycans
4. Keratin sulphate and chondroitin sulphate
All the following statements about cellulose are
correct, except
1. Cellulose is homopolymer
2. it is the most abundant organic molecule in the
biosphere
3. It is branched polymer of -glucose
4. It has 1-4 glycosidic bonds