Kuhne: from Biology Biomolecules

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 Multiple Choice QuestionsMultiple Choice Questions

161.

Select the type of enzyme involved in the following reaction

S - G + S' S + S' - G

  • Lyase

  • Transferase

  • Hydrolase

  • Dehydrogenase


162.

Usually the activity of the enzymes is optimum at normal body temperature. At about 0°C the activity of the enzyme is

  • minimum

  • maximum

  • Both (a) and (b)

  • None of these


163.

Non-reducing sugars have

  • free CHO group and bound CO group

  • free CO group and bound CHO group

  • both CO and CHO free groups

  • neither free CO nor free CHO groups


164.

Which vitamin should not be stored ?

  • Calciferol

  • Retinal

  • Niacin

  • Ascorbic acid


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165.

Which enzyme converts glucose into alcohol ?

  • Zymase

  • Diastase

  • Invertase

  • Lipase


166.

The enzyme, which combines with non-protein part to form a functional enzyme known as :

  • co-enzyme

  • holoenzyme

  • apoenzyme

  • prosthetic group


167.

Major role of minor elements inside living organisms is to act as :

  • binder of cell structure

  • constituent of hormone

  • building blocks of important amino acids

  • cofactor of enzymes


168.

Which enzyme is most specific ?

  • Trypsin

  • Pepsin

  • Sucrose

  • Nuclease


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169.

Kuhne:

  • discovered parathyroid

  • coined the term enzyme

  • coined the term gene

  • discovered enzyme


B.

coined the term enzyme

The term enzyme was given by W. Kuhne in 1678. J.B. Sumner (1926) purified and crystallised urease enzyme and suggested that enzymes are proteins. J.H. Northrop and M. Kunitz (1930) prepared pure crystalline pepsin and trypsin and showed that these enzymes were also proteins.


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170.

Defect in amino acid metabolism may results in :

  • albinism

  • porphyria

  • Wilson's disease

  • phenylketonuria


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