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Biology |
| 16)The advantages of storing carbohydrates in the form of polysaccharides are |
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When necessary polysaccharides are broken down by enzymes for the release of energy |
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Unlike small carbohydrates polysaccharides are easy to store |
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During their formation many molecules of water are removed from monosaccharides (dehydration synthesis), condensing the bulk to be stored |
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All of these |
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| 17)The most abundant organic compound in biosphere is |
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Hemi-cellulose |
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Pectin |
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Cellulose |
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Lignin |
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| 18)The largest amount of cellulose (90%) amongst the natural material is present in |
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Roughage |
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Wood |
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Cotton fibres |
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Rayon |
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| 19)Carbohydrates, the most abundant biomolecules on earth, are produced by |
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Fungi, algae and green plant cells |
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All bacteria, fungi and algae |
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Some bacteria, algae and green plant cels |
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Viruses, fungi and algae |
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| 20)Cellulose is |
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Heteropolysaccharide, branched |
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Heteropolysaccharide |
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Pentosan polysaccharide, branched |
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Hexosan polysaccharide, unbranched |
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| 21)Which of the following is used to ice creams, cosmetics and medicines to emsulsify and give a smooth texture? |
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Carboxy methylcellulose |
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Cellulose nitrate |
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Cellolose acetate |
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Cellilose |
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| 22)Chitin is the second most abundant organic substance present in the exoskeleton of insects and crustaceans. It is a |
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Lipid |
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Protein and CaCO3 deposits in it |
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Polysaccharide and the basis unit is N-acetylglucosamine |
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Protein |
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| 23)Which one of the following is correct sequence of carbohydrates in increasing order of complexity of chemical structure? |
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Oligosachharide, triose, starch, sucrose, maltose |
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Sucrose, starch, oligosachharide, maltose, triose |
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Triose, glucose, maltose, oligosaccharide starch |
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Triose, glucose,maltose, oligosaccharide, starch |
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| 24)Which of the following is a carbohydrate? |
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Aleurone |
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Inulin |
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Cystolith |
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Raphide |
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| 25)Hilum the centre of starch grain is made up of |
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Fat |
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Carbohydrate |
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Nitrogen |
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Protein |
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| 26)Which one of the following is a fibrous polysaccharide? |
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Mucilage |
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Starch |
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Glycogen |
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Cellulose |
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| 27)In which one of the following glucose is stored as glycogen? |
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Liver |
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Kidney |
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Pancreas |
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Bone |
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| 28)Which of the following yields purgative? |
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Aloe barbadensis |
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Plantago ovata |
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Hibiscus esculentus |
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Both 1 and 2 |
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| 29)Which one of the following is odd? |
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Chondriotin sulphate |
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Alginic acid |
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Hyaluronic acid |
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Keratin phosphate |
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| 30)A cellulose molecule is formed by the polymerisation of glucose. The number of glucose molecule present in a cellulose is |
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60 |
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600 |
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6000 |
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60000 |
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