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Bio-molecule

451)Collagen is-
Lipid Carbohydrate
Fibrous protein Globular protein
Answer :

452)A competetive inhitor of succinic dehydrogenase is-
α - ketoglutarate Malonate
Oxaloacetate Malate
Answer :

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
Answer :

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
Answer :

455)Micro molecule chitin is-
simple polysaccharide sulphur containing polysaccharide
phosphorus containing polysaccharide nitrogen containing polysaccharide
Answer :

456)Which one is the most abundant protein in animal world?
Collagen Trypsin
Haemoglobin Insulin
Answer :

457)Which of the following nitrogenous base is double ringed?
Thymine Guanine
Uracil Cytosine
Answer :


458)The essential chemical components of many coenzymes are-
Vitamins Carbohydrates
proteins Nucleic acids
Answer :

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
Answer :

460)The chitinous exoskeleton of arthopods formed by the polymerisation of-
D-glucosamine N-acetyl glucosamine
Keratin sulphate and chondroitin sulphate Lipoglycans
Answer :

461)Which of the following is the earliest discovered amino acid?
Phenylalanine Methionine
Glycine Asparagine
Answer :

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
Answer :

463)Which one of the following is a non-reducing carbohydrate?
Ribose 5-phosphate Lactose
Maltose Sucrose
Answer :

464)The cofactor for the enzyme carboxypeptidase is-
Zinc Copper
Iron Manganese
Answer :

465)Which of the following is not an oligosaccharide?
Maltose Raffinose
Inulin Sucrose
Answer :

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