L2
讲座
1. What is the lecture mainly about?
Research that led to the development of the frt antibiotic
Efforts to raise awareness about antibiotic resistance
Reasons for antibiotic resistance and ways of overcoming it
Difference between genetically engineered antibiotic and natural ones
2. Why does the professor mention the life span of bacteria?
To emphasize how many mutations occur in bacteria
To explain one mechanism by which antibiotics work
To point out a challenge in researching bacteria
To point out a difference between bacteria and other single-celled organisms
3. According to the professor, what are some examples of bacterial mutations that result in an increased resistance to antibiotics?
The production of new enzymes that attack antibiotics molecules
The ability to reproduce faster than antibiotic canact
A structural change that makes the cell wall less vulnerable
The ability to mimic the appearance of antibiotics molecules
A mechanism that removes antibiotic molecules from the bacterial cell
4. According to the professor, what is a benefit of combination therapy?
It prevents healthy genes from mutating.
It strengthen the walls of cell.
It targets only specific bacteria.
It uses antibiotics already available to doctors.
5. What is the professor’s opinion about the potential of natural approaches to fighting bacteria?
The risks of using natural approaches outweigh the potential rewards.
Natural approaches can be better than what researchers can develop alone.
Current research on the potential of many natural approaches is inconclusive. Researchers are more optimistic about natural approaches than doctors are.
6. According to the professor, what challenge do phages pose to researchers?
Finding the right phage for each purpose is difficult
Cultivating phages in a laboratory is expensive.
Phages are dangerous to handle.
Phages evolve in unpredictable ways.
