how does drug resistance occur

How does antibiotic resistance occur? – University of Delaware

When drug resistance occurs, the bacteria has not specifically changed itself in some way to survive. Random mutations are usually responsible for drug resistance in bacteria. Fortunately (for the bacteria), these mutations incur some change in the cell?s structure or metabolism that allow it to survive in the presence of an antibiotic.

Chapter 20: Antimicrobial Drugs Flashcards | Quizlet

Drug resistance occurs 4) _____ A)when antibiotics are taken after the symptoms disappear. B) because bacteria are normal microbiota. C) against antibiotics and not against synthetic chemotherapeutic agents. D) when antibiotics are used indiscriminately. E) All of the answers are correct.

Antibiotic Resistance Questions and Answers | Community

A: Antibiotics, also known as antimicrobial drugs, are drugs that fight infections caused by bacteria in both humans and animals. Antibiotics fight these infections either by killing the bacteria or making it difficult for the bacteria to grow and multiply. Antibiotics only treat certain bacterial infections.

Antibiotic Resistance: Questions & Answers – RxList

Antibiotic resistance is the ability of bacteria or other microbes to resist the effects of an antibiotic. Antibiotic resistance occurs when bacteria change in some way that reduces or eliminates the effectiveness of drugs, chemicals, or other agents designed to cure or prevent infections.

How does antibiotic resistance occur – Answers.com

In Biology. Antibiotic resistance occurs when bacteria or other microbes builds the ability to resist the effects of the antibiotic. This happens when bacteria changes in a way that reduces or eliminates the effectiveness of the drugs designed to cure infections.

General Background: About Antibiotic Resistance

Some resistance occurs without human action, as bacteria can produce and use antibiotics against other bacteria, leading to a low-level of natural selection for resistance to antibiotics. However, the current higher-levels of antibiotic-resistant bacteria are …

How Drug Resistance Occurs – TheBody.com

Some will cause resistance to just one drug. But other HIV mutations can cause resistance to two or more drugs — or even to an entire class of drugs. This is especially true for older NNRTIs. Just one specific type of mutation will make HIV resistant to the NNRTIs Sustiva and Viramune.

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