Co-enzyme is often formed from ?

Related Mcqs:

1. Enzyme present in the saliva is_____________?

   A. lipase
   B. trypsin
   C. ptyalin
   D. invertase

2. An activated enzyme consisting of polypeptide chain and a cofactor is called_______________?

   A. Apoenzyme
   B. Holoenzyme
   C. Activated enzyme
   D. Both b and c

3. 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

4. The rate of reaction is directly proportional to the concentration of an enzyme which statement is incorrect in this respect_________________?

   A. Increase in enzyme molecule increases the available active sites.
   B. This relation is for unlimited time period with unlimited enzyme concentration
   C. If the concentration is doubled the rate will become two fold.
   D. None of these.

5. The structure of an enzyme is altered by____________?

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

6. 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

7. 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

8. An enzyme which can convert single stranded RNA into double stranded viral DNA is called____________?

   A. DNAase
   B. RNAase
   C. DNA polymerase
   D. Reverse Transcriptase

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