NURSING EXAM QUESTIONS
TOXICOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Which statement correctly explains how resistance to penicillin appeared after a few years of its widespread use to fight bacterial infection?
|
|
in order to survive exposure to penicillin, bacteria developed a resistance to the drug
|
|
|
a few bacteria became resistant to penicillin, and through sexual reproduction, most bacteria acquired the resistance
|
|
|
penicillin never really successfully wiped out populations of bacteria, scientist did not use proper controls in their studies
|
|
|
some bacteria were resistant to penicillin and their population spread rapidly, without competition from bacteria that were killed by penicillin
|
Explanation:
Detailed explanation-1: -Through mutation and selection, bacteria can develop defense mechanisms against antibiotics. For example, some bacteria have developed biochemical “pumps” that can remove an antibiotic before it reaches its target, while others have evolved to produce enzymes to inactivate the antibiotic.
Detailed explanation-2: -About Antimicrobial Resistance. Antimicrobial resistance happens when germs like bacteria and fungi develop the ability to defeat the drugs designed to kill them. That means the germs are not killed and continue to grow. Resistant infections can be difficult, and sometimes impossible, to treat.
There is 1 question to complete.