Sulfanilamide (a sulfa drug) is active against those that a. are susceptible to

Question

Sulfanilamide (a sulfa drug) is active against those that a. are susceptible to nystatin b. synthesize folic acid c. induce allergic reaction d. are commonly found in polluted water Both the Cephalosporin and penicillin antibiotics a. are produced by mold like bacteria b. cause immune complex formation in the body c. are used primarily for Gram-negative bacteria d. act on cell wall bacteria Tuberculosis is a bacterial disease whose agent is usually susceptible to: a. moxalactam b. penicillin c. nystatin d. isoniazid All the following apply to the tetracycline antibiotics except: a. they are associated with discoloration of teeth b. they are broad-spectrum c. they may cause aplastic anemia d. they are used for treating diseases due to Gram-negative bacteria All aminoglycoside antibiotics function by a. interfering with cell wall synthesis b. interfering with protein synthesis c. block absorption at the cell membrane d. interfering with flagellar activity

Explanation / Answer

38. b. synthesize floic acid (Explained as below).

Sulfanilamide blocks folic acid synthesis.

39. d. act on cell wall of bacteria (Explained as below).

Both, Cephalosporins and Pencillin antibiotics, inhibit bacterial cell wall synthesis.

40. d. isoniazid (Explained as below).

Isoniazid is the drug of choice for latent TB infection.

41. d. they are used for treating diseases due to Gram-negative bacteria (Explained as below).

Tetracyclines are broad spectrum antibiotics. So, they act on both, Gram positive as well as Gram negative bacteria.

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