Enzymes – MDCAT Biology Chap 3 – Level 4

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Enzymes - Level 4

Chapter 3 - MDCAT Biology - Test Preparation MCQs

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

  1. Most vitamins are: Co-enzymes
  2. Magnesium (Mg+2) is an inorganic activators for the enzyme: Phosphatase
  3. Zinc (Zn+2) is an inorganic activator for the enzyme: Carbonic Anhydrase
  4. Substances which decrease the activity of enzyme are called: Inhibitors
  5. Non-competitive inhibitor is one which: Binds away from the active site of an enzyme
  6. Competitive Inhibitor is one which: Competes for the active site of an enzyme
  7. In non-competitive inhibition, the binding site other than the active site is called: Allosteric site
  8. The pesticides DDT and parathion are inhibitors of key enzymes in the Nervous System
  9. "When the product is in abundance, it binds competitively with enzyme's active site, as the product is used up, more product can be produced", this is an example of: Feed-back Inhibition
  10. Concerning effects of Radiation on enzymes: generally inactivated by both, UV-rays and X-rays
  11. Enzymes can be denatured at: High temperature only
  12. Biological control for the regulation of most of the enzyme is provided by: Feed-back Inhibition
  13. Molecule binds to the active site of an enzyme is: Competitive Inhibitor
  14. Penicillin blocks the active site of an enzyme that many bacteria use for: Synthesis of cell-wall
  15. Sometimes, the activator functions Protectors

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1. Non-competitive inhibitor is one which:

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2. The pesticides DDT and parathion are inhibitors of key enzymes in the

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3. Biological control for the regulation of most of the enzyme is provided by:

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4. Zinc (Zn+2) is an inorganic activator for the enzyme:

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5. In non-competitive inhibition, the binding site other than the active site is called:

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6. Penicillin blocks the active site of an enzyme that many bacteria use for:

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7. Most vitamins are:

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8. Substances which decrease the activity of enzyme are called:

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9. "When the product is in abundance, it binds competitively with enzyme's active site, as the product is used up, more product can be produced", this is an example of:

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10. Enzymes can be denatured at:

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11. Sometimes, the activator functions

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12. Molecule binds to the active site of an enzyme is:

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13. Magnesium (Mg+2) is an inorganic activators for the enzyme:

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14. Competitive Inhibitor is one which:

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15. Concerning effects of Radiation on enzymes:

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