NEET Biology Biomolecules / जैव-अणु Question Bank

done Critical Thinking Total Questions - 15

• question_answer1)
  Which of the following enzyme was first isolated and purified in the form of crystals [BHU 1990]
  A)
  Amylase done clear
  B)
  Urease done clear
  C)
  Ribonuclease done clear
  D)
  Pepsin done clear
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• question_answer2)
  Enzymes generally have
  A)
  Same pH and temperature optima done clear
  B)
  Same pH but different temperature optima done clear
  C)
  Different pH but same temperature optima done clear
  D)
  Different pH and different temperature optima done clear
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• question_answer3)
  Most of the biochemical reactions differ from those occuring in the non-living world in
  A)
  Requiring energy done clear
  B)
  Releasing energy done clear
  C)
  Being enzymatic done clear
  D)
  Being spontaneous done clear
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• question_answer4)
  How many genes determine synthesis of one enzyme
  A)
  One done clear
  B)
  Two done clear
  C)
  Four done clear
  D)
  Sixteen done clear
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• question_answer5)
  Which of the following is a correct sequence for the appearance of compounds in a cell
  A)
  Amino acids ® protein ® enzyme done clear
  B)
  Protein ® enzyme ® amino acids done clear
  C)
  Disaccharides ® monosaccharides ® polysaccharides done clear
  D)
  Monosaccharides ® starch ® sucrose done clear
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• question_answer6)
  Cofactor for alcohol dehydrogenase is
  A)
  \[{{K}^{+}}\] done clear
  B)
  \[F{{e}^{++}}\] done clear
  C)
  \[Z{{n}^{++}}\] done clear
  D)
  \[N{{a}^{+}}\] done clear
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• question_answer7)
  The most important property of an enzyme is its
  A)
  Composition done clear
  B)
  Thermal denaturation done clear
  C)
  Specificity done clear
  D)
  Solubility done clear
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• question_answer8)
  The ratio of the enzyme to substrate molecule can be as high as
  A)
  1 : 1000 done clear
  B)
  1 : 1,00,000 done clear
  C)
  1 : 10,00,000 done clear
  D)
  1 : 50,000 done clear
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• question_answer9)
  Which of the  following is the best evidence for the template theory of enzyme action [AIIMS 1981]
  A)
  Compounds similar in structure to the substrate inhibit the reaction done clear
  B)
  Enzymes speed up reactions by definite amounts done clear
  C)
  Enzymes are found in living organisms and increase the rate of certain reactions done clear
  D)
  Enzymes determine the direction of a reaction done clear
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• question_answer10)
  Competitive inhibition could be reversed by increasing the concentration of
  A)
  Substrate done clear
  B)
  Product done clear
  C)
  Enzyme done clear
  D)
  Coenzyme done clear
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• question_answer11)
  In the modern system of nomenclature which one of the following enzyme occupies 6th position
  A)
  Ligase done clear
  B)
  Isomerase done clear
  C)
  Lyase done clear
  D)
  Hydrolase done clear
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• question_answer12)
  Which one of the following enzyme is composed of simple proteins
  A)
  Peroxidase done clear
  B)
  Phosphoglyceromutase done clear
  C)
  Proteinase done clear
  D)
  Amylase done clear
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• question_answer13)
  Amylopsin acts upon [BHU 1991]
  A)
  Polysaccharide in any medium done clear
  B)
  Polysaccharide in acidic medium done clear
  C)
  Polysaccharide in alkaline medium done clear
  D)
  Polysaccharide in neutral medium done clear
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• question_answer14)
  Example of amide enzyme is
  A)
  Arginase done clear
  B)
  Lactase done clear
  C)
  Zymase done clear
  D)
  Lipase done clear
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• question_answer15)
  Enzymes have a very narrow optima for
  A)
  Light done clear
  B)
  Temperature done clear
  C)
  pH done clear
  D)
  Humidity done clear
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