MCQs of Chemistry in Everyday Life

Showing 21 to 30 out of 145 Questions

21.

Which classification of drugs is most useful for doctors ?

(a)	On the basis of pharmacological effect
(b)	On the basis of drug action
(c)	On the basis of molecular target
(d)	On the basis of chemical structure of drugs

22.

Name the substance responsible for common cold, acidity, swelling, redness of skin and itching.

23.

Choose the symptom that does not occur as a result of release of histamine.

24.

State the biomolecules that function as biocatalysts in the body.

25.

The substrate binds to _____ on the enzyme, thus the product is obtained at the end of the reaction.

26.

State the substance that prevents the binding of the substrate to the active site on the enzyme.

27.

What are those drugs called that compete with the natural substrate for their attachment on the active site of the enzyme ?

28.

What are receptors made up of ?

29.

How does the receptor recognize with the chemical messenger signaling the start of chemical reaction ?

(a)	By the uncertain width of binding site
(b)	By changing the shape of its binding site
(c)	By the external appearance of the chemical messenger
(d)	All of the above

30.

Which process is inhibited due to the binding of the drug to the receptor site instead of specific chemical messenger ?

Showing 21 to 30 out of 145 Questions