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The main reason why antibiotics could no...

The main reason why antibiotics could not always treat the bacteria-mediated diseases is

A

inactivation of antibiotics of bacterial enzymes

B

decreased efficiency of the immune system

C

the development of mutant strains resistant to antibiotics

D

insensitivity of the individual following long exposure to antibiotics.

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The correct Answer is:
### Step-by-Step Solution: 1. **Understanding Antibiotics**: Antibiotics are medications designed to inhibit the growth of bacteria or kill them outright. They are used to treat infections caused by bacteria. 2. **Mechanism of Action**: Antibiotics work by targeting specific functions or structures in bacteria. This can include disrupting cell wall synthesis, inhibiting protein synthesis, or interfering with DNA replication. 3. **Resistance Development**: Over time, some bacteria can develop resistance to antibiotics. This means that the antibiotics that once effectively killed or inhibited these bacteria no longer work. 4. **Causes of Resistance**: The primary reason for the development of antibiotic-resistant bacteria is the overuse and misuse of antibiotics. When antibiotics are used excessively, bacteria can mutate and adapt, leading to strains that are resistant to the drugs. 5. **Evaluating Options**: - **Inactivation of Antibiotics by Bacterial Enzymes**: This is not the main reason for treatment failure, as not all bacteria have the enzymes that can inactivate antibiotics. - **Decreased Efficiency of the Immune System**: While this can affect recovery, it is not the primary reason antibiotics fail. - **Development of Mutant Strains Resistant to Antibiotics**: This is the correct answer, as the emergence of resistant strains is a significant challenge in treating bacterial infections. - **Insensitivity of the Individual Following Long Exposure to Antibiotics**: This can occur but is not the main reason antibiotics fail to treat infections. 6. **Conclusion**: The main reason antibiotics cannot always treat bacteria-mediated diseases is the development of mutant strains that are resistant to antibiotics. ### Final Answer: The main reason why antibiotics could not always treat bacteria-mediated diseases is the **development of mutant strains resistant to antibiotics**. ---
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