Question

Some species of bacteria are harmful. Antibiotics are chemicals that kill bacteria. Some bacteria are resistant to antibiotics and are not killed by these chemicals. Over time, the resistant bacteria can reproduce and create populations that are not affected by antibiotics. The graphs below show the results of a controlled experiment that measured the population of one species of bacteria that had been grown in four containers under identical conditions. Different antibiotics were added to three of the four containers. Which conclusion about this species of bacteria is best supported by the information in the graphs?

Answer 1

Ответ:

The information presented in the graphs suggests that the species of bacteria in question has developed antibiotic resistance. This is supported by the fact that in the containers where antibiotics were added, the bacterial population either remained stable or increased, while in the container without antibiotics, the population decreased. This indicates that the bacteria in the containers with antibiotics were able to survive and reproduce, suggesting resistance to the antibiotics used.

Объяснение:

Answer 2

The best conclusion supported by the information in the graphs is that the species of bacteria in the containers that had antibiotics added to them showed a decrease in population over time. This suggests that the antibiotics were effective in killing the bacteria in those containers. On the other hand, the population of bacteria in the container without antibiotics remained relatively stable or even increased slightly over time. This indicates that the bacteria in that container were not affected by the antibiotics and were able to reproduce successfully. Therefore, it can be inferred that some bacteria in this species are resistant to antibiotics and can survive and reproduce even in the presence of these chemicals.