Question
scientists are studying the effectiveness of an antibiotic they have a mixed population of 33% resistant in a 67% non-resistant bacteria they add an antibiotic to the bacterial environment and allow the bacteria to grow what percent of the population would be expected to be resistant to the antibiotic at the end of the experiment?
Answers
GPT-4o mini
To determine the expected percentage of resistant bacteria after exposing a mixed population to an antibiotic, it's important to consider the growth dynamics of the bacteria and the selective pressure exerted by the antibiotic.
Given:
- Initial population: 33% resistant, 67% non-resistant.
When the antibiotic is applied, the non-resistant bacteria will be susceptible to the antibiotic and will likely die off. The resistant bacteria, which make up 33% of the population, will survive and potentially reproduce.
Since the resistant bacteria are expected to survive, they will make up a larger proportion of the total bacterial population after exposure to the antibiotic, as the non-resistant bacteria are killed off.
If we assume that all of the non-resistant bacteria die due to the antibiotic and only resistant bacteria survive, the entire population that remains would be made up of the resistant strain.
Thus, at the end of the experiment, we can expect that **100%** of the surviving bacterial population will be resistant.
To summarize:
- After exposure to the antibiotic, the percentage of bacteria that would be expected to be resistant is **100%** if all non-resistant bacteria are eliminated.
Given:
- Initial population: 33% resistant, 67% non-resistant.
When the antibiotic is applied, the non-resistant bacteria will be susceptible to the antibiotic and will likely die off. The resistant bacteria, which make up 33% of the population, will survive and potentially reproduce.
Since the resistant bacteria are expected to survive, they will make up a larger proportion of the total bacterial population after exposure to the antibiotic, as the non-resistant bacteria are killed off.
If we assume that all of the non-resistant bacteria die due to the antibiotic and only resistant bacteria survive, the entire population that remains would be made up of the resistant strain.
Thus, at the end of the experiment, we can expect that **100%** of the surviving bacterial population will be resistant.
To summarize:
- After exposure to the antibiotic, the percentage of bacteria that would be expected to be resistant is **100%** if all non-resistant bacteria are eliminated.