Question:
Which of the following is NOT a bacteriostatic antibiotic?
Which of the following is NOT a bacteriostatic antibiotic?
Show Hint
Glycopeptides smash the cell wall - that means killing, not just stalling growth.
Updated On: Jun 24, 2026
- Clindamycin
- Vancomycin
- Tetracycline
- Cephalosporins
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Recall the concept. Bacteriostatic agents only limit bacterial growth by interfering with protein synthesis, DNA replication, or other metabolic steps, while bactericidal agents actually kill the organism, usually by irreversibly inhibiting cell wall synthesis.
Step 2: Classify each option. Clindamycin (lincosamide), tetracycline, and the macrolides/lincosamides group are classically bacteriostatic because they block the bacterial ribosome reversibly.
Step 3: Identify the odd one out. Vancomycin is a glycopeptide that inhibits cell wall synthesis and is bactericidal, not bacteriostatic. Therefore vancomycin is the antibiotic that is NOT bacteriostatic, making option b correct.
Step 4: Note on the distractors. Cephalosporins are also bactericidal cell-wall agents, so strictly more than one beta-lactam style answer kills bacteria, but among the listed options the single best fit for the classic teaching of a NOT-bacteriostatic drug grouped with two bacteriostatic ribosomal agents is vancomycin.
Step 2: Classify each option. Clindamycin (lincosamide), tetracycline, and the macrolides/lincosamides group are classically bacteriostatic because they block the bacterial ribosome reversibly.
Step 3: Identify the odd one out. Vancomycin is a glycopeptide that inhibits cell wall synthesis and is bactericidal, not bacteriostatic. Therefore vancomycin is the antibiotic that is NOT bacteriostatic, making option b correct.
Step 4: Note on the distractors. Cephalosporins are also bactericidal cell-wall agents, so strictly more than one beta-lactam style answer kills bacteria, but among the listed options the single best fit for the classic teaching of a NOT-bacteriostatic drug grouped with two bacteriostatic ribosomal agents is vancomycin.
Was this answer helpful?
0
0
Top NEET PG Pharmacology Questions
- A bronchial asthma patient on inhalational steroids presented with white patchy lesions on the tongue and buccal mucosa. What is the drug that can be used to treat this condition?
- A pregnant woman with a history of bronchial asthma is in the third stage of labor. Which drugs should be avoided in managing postpartum hemorrhage in this mother?
- Name the drug that acts on both the marked areas.
- A patient with a previous history of myocardial infarction and ventricular arrhythmia is ontreatment for a few months. He developed fatigue, dyspnea, and weight gain. He had also developed pulmonary fibrosis. Which of the following drugs is responsible for the side effects mentioned above?
- A young female comes to the emergency department after consuming 100 aspirin tablets.What should be the next step in management?
View More Questions
Top NEET PG Questions
- A patient hailing from Delhi presents with fever, arthralgia, and extensive petechial rash for 3 days. Lab investigations revealed a hemoglobin of 9 g/ dL, a white blood cell count of 9000 cells/mm3, a platelet count of 20000 cells/mm3, and a prolonged bleeding time. The clotting time was normal. What is the most likely diagnosis?
- Which of the following statements is true about Trichomonas vaginalis?
- A lady from West Rajasthan presented with an ulcer surrounded by erythema on the right leg. Microscopy of the biopsy from the edge of the ulcer showed organisms with dark staining nuclei and kinetoplast. What is the most likely causative agent?
- A child presents with a fever and a rash. Urine examination showed cells with owl's eye appearance. What is the most likely diagnosis?
- Infection with Clonorchis sinensis is associated with an increased risk of__?
View More Questions