A.bio catalyst
B.hormone
c. Gland
D.None of these
Submitted by: Bari Baloch
Related Mcqs:
- Enzyme present in the saliva is_____________?
A. lipase
B. trypsin
C. ptyalin
D. invertase - Co-enzyme is often formed from ?
A. lipid
B. protein
C. inorganic ion
D. vitamin - 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 - An activated enzyme consisting of polypeptide chain and a cofactor is called_______________?
A. Apoenzyme
B. Holoenzyme
C. Activated enzyme
D. Both b and c - 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. - 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 - 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 - Excessive increase in temperature of medium causes the enzyme molecule to____________?
A. Activate
B. Unaffected
C. Denatured
D. None of these - 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 - Like enzymes , co enzyme can be used ?
A. only once
B. only few times
C. again and again
D. non of aboveSubmitted by: Wajahat Amin
