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Q50 (NDA-II/2020) Science & Technology › Biotechnology & Health › Microbiology and antimicrobials

Which one of the following statements is correct about effects of antibiotics on viruses?

Result
Your answer: —  Â·  Correct: C
Explanation

Antibiotics are specifically designed to target bacterial infections by disrupting unique bacterial structures and metabolic pathways, such as the synthesis of peptidoglycan cell walls or specific protein synthesis machinery [1][3]. Viruses are fundamentally different; they are acellular entities consisting of genetic material wrapped in a protein coat [3]. Unlike bacteria, viruses lack their own metabolic processes and cellular structures like ribosomes or cell membranes. Instead, they hijack the host cell's machinery to replicate [3]. Because viruses do not possess the specific biochemical pathways or targets that antibiotics are engineered to attack, these drugs are ineffective against viral infections [1]. While viruses are often considered "non-living" outside a host due to a lack of molecular movement, they do not have the independent life-sustaining processes that antibiotics disrupt [4].

Sources

  1. [1] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 3: Health: The Ultimate Treasure > 3.5.1 Treatment of diseases > p. 39
  2. [3] Science , class X (NCERT 2025 ed.) > Chapter 5: Life Processes > p. 79
  3. [4] https://www.vaccinate.initiatives.qld.gov.au/vaccination-blog/why-antibiotics-cant-be-used-to-treat-viruses-colds-or-the-flu
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