The essential chemical components of many coenzymes are from Bio

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 Multiple Choice QuestionsMultiple Choice Questions

291.

Macromolecule chitin is

  • nitrogen containing polysaccharide

  • phosphorus containing polysaccharide

  • sulphur containing polysaccharide

  • simple polysaccharide


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292.

The essential chemical components of many coenzymes are

  • proteins

  • nuclei acids

  • carbohydrates

  • vitamins


D.

vitamins

Coenzymes are organic molecules that are required by certain enzymes to carry out catalysis. They bind to the active site of the enzyme and participate in catalysis but are not considered substrates of the reaction. Essential chemical components of many coenzymes are vitamins eg, coenzyme Nicotinamide Adenine Dinucleotide (NAD) and NADP contain the vitamin niacin. Proteins, nucleic acids and carbohydrates are not enzymatic biomolecules.


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293.

One molecule of triglyceride is produced using

  • one fatty acid and one glycerol

  • one fatty acid and three glycerols

  • three fatty acids and three glycerols

  • three fatty acids and one glycerol


294.

Glutenin is an important protein in

  • potato

  • wheat

  • soyabean

  • spinach


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295.

Which one of the following is enriched with a non-reducing sugar?

  • Grapes

  • Germinating barley grains

  • Table sugar

  • Mother's milk


296.

Which of the following statements is wrong for sucrose?

  • It is a disaccharide

  • It is a non-reducing sugar

  • It accumulates in the cytoplasm

  • It is comprised of maltose and fructose


297.

The protein component of a holoenzyme is known as

  • coenzyme

  • cofactor

  • prosthetic group

  • apoenzyme


298.

Km is

  • product

  • enzyme

  • constant

  • unit


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299.

Absorption of vitamin-B;» in human requires 'P' glycoprotein secreted from 'Q'. The correct choices of P and Q are

  • P - Extrinsic factor; Q - Stomach

  • P - Intrinsic factor; Q - Stomach

  • P - Intrinsic factor; Q - Small intestine

  • P - Exopolysaccharide; Q - Small Intestine


300.

Which one of the following combination of all three fatty acids are essential for human beings?

  • Oleic acid, linoleic acid and linolenic acid

  • Palmitic acid, linoleic acid and arachidonic acid

  • Oleic acid, linoleic acid and arachidonic acid

  • Linoleic acid, linolenic acid and arachidonic acid


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