Enzymes – MDCAT Biology Chap 3 – Level 3

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Enzymes - Level 3

Chapter 3 - MDCAT Biology - Test Preparation MCQs

Read these MCQs of Enzymes MDCAT Chapter 3 and start the online test.

  1. Decarboxylases and Dehydratases, are enzymes included in class: Lyases
  2. Enzymes which alters the structure but not the atomic composition of substrate by moving a group from one position to another is one molecule are included in class: Isomerases
  3. The inorganic ions which act as a prosthetic group in holoenzymes are called: Co-factors
  4. The organic prosthetic groups in holoenzymes are called Co-enzymes
  5. A co-enzyme constitutes: 1% portion of entire enzyme molecule
  6. Co-enzymes include: Flavin mononucleotide
  7. Co-factors include: Magnesium
  8. Concerning temperature affecting enzyme activity, which of the following statement is correct? Most enzymes are highly active at 37°C
  9. Concerning enzyme activity at O°C, which of the following statement is correct? Activity is reduced to minimum but enzymes are not destroyed
  10. Regarding factors affecting enzyme activity, which of the following statement is correct? Substrate and enzyme concentration are directly proportional upto a certain maximum velocity.

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1. Decarboxylases and Dehydratases, are enzymes included in class:

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2. Co-factors include:

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3. The inorganic ions which act as a prosthetic group in holoenzymes are called:

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4. Concerning temperature affecting enzyme activity, which of the following statement is correct?

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5. Co-enzymes include:

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6. Concerning enzyme activity at O°C, which of the following statement is correct?

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7. Enzymes which alters the structure but not the atomic composition of substrate by moving a group from one position to another is one molecule are included in class:

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8. Regarding factors affecting enzyme activity, which of the following statement is correct?

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9. The organic prosthetic groups in holoenzymes are called

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10. A co-enzyme constitutes:

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