| 1 |
If you add more substrate to already occurrig enzymatic reaction and it has no effet on the rate of reaction. What is the form given to this situation. |
- A. Denaturation
- B. Saturation
- C. Desaturation
- D. Inhibition
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| 2 |
Changes in pH can alter the active site by affecting the |
- A. Shape of substrate
- B. Ionization of amino acids
- C. Ionization of cofactor
- D. Ionizaation of co enzyme
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| 3 |
An enzyme works best at a pH of 7.4. It is places in an acidic solution with a pH of 4.0.How will this affect the enzyme. |
- A. The substrate will become inactive in an acidic environment
- B. the enzyme wil gain additional active sites
- C. The enzyme will catalyse reactions faster due to increased H ions
- D. The activ esite will be modified reducing substrate binding
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| 4 |
Enzymes convert the substrate into different molecules called. |
- A. Product
- B. Reactants
- C. Inhibitors
- D. Biomolecules
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| 5 |
Primarily, all enzymes are. |
- A. Proteins
- B. Nucleic acids
- C. Carbohydrates
- D. Lipids
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| 6 |
The active site of an enzyme |
- A. Never changes
- B. Forms no chemical bond with substrate
- C. Determines by its structur ethe specificity of the enzyme
- D. Looks like a lump projecting from the surface of an enzyme.
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| 7 |
The biochemical reactions in which larger molecules are broken down are called |
- A. Metabolism
- B. Catabolism
- C. anabolism
- D. Mutualism
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| 8 |
ionization of amino acids at the activ esite is affected by. |
- A. Change in pH
- B. Change in temperature
- C. Change in substrate conceration
- D. Change is tempeaure and substrate concentration
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| 9 |
Whcih does yield energy. |
- A. Anabolism
- B. Catabolism
- C. Metabolism
- D. None of these
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| 10 |
In the presence of enzymes, reactions proceed at a. |
- A. Slower rate
- B. Faster rate
- C. Very slow rate
- D. Medium rate
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