Enzymes as Drug Targets

Q. If the bond between the enzyme and inhibiting drug is very strong, which of the following takes place?

1. The active site slowly regains its original shape
2. The enzyme develops a new active site
3. The enzyme is blocked temporarily
4. The enzyme is blocked permanently

Q. Drugs compete with the natural substrate for their attachment on the active sites of enzymes. Such drugs are called competitive inhibitors

1. True
2. False

Q. Consider the following three statements about enzyme inhibitor drug –
(i) It decreases the catalytic action of enzyme
(ii) It prevents the binding of substrate to enzyme
(iii) It can be of both competitive or non-competitive type
Which of the above statements are correct?

1. Only (i)
2. (i) and (ii)
3. (i) and (iii)
4. All

Q. Which of the followings cannot be target molecules of drugs in human body –

1. Carbohydrates
2. Proteins
3. Vitamins
4. Nucleic Acids

Q. therapeutic method uses chemical drugs to treat cancer.

1. Chemotherapy
2. Radition therapy
3. Immunotherapy

Q. Drugs that bind to the receptor site and inhibit the natural function are called

1. antagonists
2. agonists
3. enzyme inhibitors

Q. Which of the followings cannot be target molecules of drugs in human body –

1. Carbohydrates
2. Proteins
3. Vitamins
4. Nucleic Acids

Q. If the bond between the enzyme and inhibiting drug is very strong, which of the following takes place?

1. The enzyme is blocked temporarily
2. The active site slowly regains its original shape
3. The enzyme develops a new active site
4. The enzyme is blocked permanently