A three dimensional dcavity bearing a specific charge by which the enzyme reacts with its substrate is called_________________?

Related Mcqs:

1. If more substrate to already occurring enzymatic reaction is added more enzyme activity is seen because_____________?

   A. There is probably more substrate present than there is enzyme.
   B. There is probably more enzayme available than there is substrate.
   C. There is probably more product present than there is either substrate or enzyme.
   D. The enzyme substrate complex is probably failing to form during the reaction

2. If the concentration of enzyme is kept constant and amount of substrate is increased a point is reached where increase in substrates concentration does not affect the reaction rate because of____________________?

   A. Enzymes get denatured at higher substrate conc
   B. Rate of reaction is indirectly proportional to substrate concentration at this point
   C. All the active sites on enzyme molecule are occupied
   D. None of these

3. If enzyme concentration is low than substrate pH and temperature values are equal to requirement then which of the following will increase rate of reaction____________________?

   A. increase in concentration of enzyme
   B. increase in concentration of substrate
   C. increase in pH
   D. increase in temperature

4. A chemical substance which can react (in place of substrate) with the enzyme but is not transformed into product/s and thus blocks the active site temporarily or permanently is called_______________?

   A. Co-enzyme
   B. Blocker
   C. Inhibitor
   D. Cofactor

5. A chemical substance that reacts with enzyme but is not transformed into product and thus blocking active site is called__________?

   A. Substrate
   B. Co-factor
   C. Inhibitor
   D. Promotor

6. If more substrate to already occurring enzymatic reaction is added and there is no effect on the rate of the reaction what is the form given to this situation___________?

   A. Saturation
   B. Denaturation
   C. Composition
   D. Inhibition

7. Which statement about enzyme is incorrect_________________?

   A. Some of them consist solely of protein with no non protein part.
   B. They catalyze a chemical reaction without being utilized.
   C. All enzymes are fibrous Proteins.
   D. They without their cofactor are called apoenzyme.

8. Inhibitors which block the enzyme by forming weak bond are called___________?

   A. Competitive inhibitors.
   B. Non-competitive inhibitors
   C. Irreversible inhibitors.
   D. Both a and b

9. Enzyme activity can also be charted through the __________ ?

   A. Rate of digestion
   B. Rate of reaction
   C. Level of pH
   D. Number of active sites

   Submitted by: Rashid Mehmood

10. Enzyme discovered by: ___________?

    A. Jons Jacob Berzelius
    B. Anselme Payen
    C. Walter Bradford Cannon
    D. None of these

    Submitted by: Fiaz Ahmad Mazari