The structure of an enzyme is altered by____________?

Related Mcqs:

1. enzyme is_____________?

   A.bio catalyst
   B.hormone
   c. Gland
   D.None of these

   Submitted by: Bari Baloch

2. 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

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

   A. Active site
   B. Binding site
   C. Catalytic site
   D. Allosteric site

4. 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

5. Excessive increase in temperature of medium causes the enzyme molecule to____________?

   A. Activate
   B. Unaffected
   C. Denatured
   D. None of these

6. 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

7. A substance which binds at the active site of the enzyme but does not result in the formation of the products is called________________?

   A. Irreversible inhibitor
   B. Reversible inhibitor
   C. Competitive inhibitor
   D. Non-competitive inhibitor

8. An enzyme which converts a dipeptide into separate amino acids is an example of__________?

   A. Decarboxylase
   B. Hydrolase
   C. Oxidoreductase
   D. Transferase

9. The gal bladder releases _________ enzyme to digest the food ?

   A. Pepsin
   B. Hcl
   C. Both
   D. None

   Submitted by: Mehtab Ali Khuwaja

10. Like enzymes , co enzyme can be used ?

    A. only once
    B. only few times
    C. again and again
    D. non of above

    Submitted by: Wajahat Amin