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| 451)Collagen is- | |||
| Lipid | Carbohydrate | ||
| Fibrous protein | Globular protein | ||
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| 452)A competetive inhitor of succinic dehydrogenase is- | |||
| α - ketoglutarate | Malonate | ||
| Oxaloacetate | Malate | ||
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| 453)About 98% of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen,oxygen and- | |||
| Calcium and phosphorus | magnesium and sodium | ||
| sulphur and magnesium | phosphorus and sulphur | ||
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| 454)Carrier ions like Na+ facilitate the abosorption of substances like - | |||
| glucose and fatty acids | amino acids and glucose | ||
| fatty acids and glycerol | fructose and some amino acids | ||
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| 455)Micro molecule chitin is- | |||
| simple polysaccharide | sulphur containing polysaccharide | ||
| phosphorus containing polysaccharide | nitrogen containing polysaccharide | ||
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| 456)Which one is the most abundant protein in animal world? | |||
| Collagen | Trypsin | ||
| Haemoglobin | Insulin | ||
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| 457)Which of the following nitrogenous base is double ringed? | |||
| Thymine | Guanine | ||
| Uracil | Cytosine | ||
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| 458)The essential chemical components of many coenzymes are- | |||
| Vitamins | Carbohydrates | ||
| proteins | Nucleic acids | ||
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| 459)A phosphoglyceride is always made up of- | |||
| A saturated or unsaturated fatty acid esterified to a phosphate group which is also attached to a glycerol molecule | Only an unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached | ||
| A saturated or unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached | Only a saturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached | ||
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| 460)The chitinous exoskeleton of arthopods formed by the polymerisation of- | |||
| D-glucosamine | N-acetyl glucosamine | ||
| Keratin sulphate and chondroitin sulphate | Lipoglycans | ||
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| 461)Which of the following is the earliest discovered amino acid? | |||
| Phenylalanine | Methionine | ||
| Glycine | Asparagine | ||
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| 462)Which one of the following statements is incorrect? | |||
| A competitive inhitor reacts reversibly with the enzyme to form an enzyme-inhibitor complex | The presence of competitive inhibitor decreases the Km of the enzyme for the substrate | ||
| The competitive inhibitor does not affect the rate of breakdown of the enzyme-substrate comples | In competitive inhibition, the inhibitor molecule is not chemically changed by the enzyme | ||
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| 463)Which one of the following is a non-reducing carbohydrate? | |||
| Ribose 5-phosphate | Lactose | ||
| Maltose | Sucrose | ||
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| 464)The cofactor for the enzyme carboxypeptidase is- | |||
| Zinc | Copper | ||
| Iron | Manganese | ||
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| 465)Which of the following is not an oligosaccharide? | |||
| Maltose | Raffinose | ||
| Inulin | Sucrose | ||
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