subject
Biology, 27.06.2019 05:30 sumitshekhar348

Antibiotics, such as penicillin, are drugs that kill or prevent the growth of bacteria. when antibiotics were first discovered, they seemed to represent a miracle cure for human diseases like pneumonia, typhoid, bubonic plague, and gonorrhea. today there are resistant strains of bacteria that cannot be killed by antibiotics. can you pick out the statements that accurately describe the development of antibiotic resistance? antibiotic resistance is not an example of natural selection. mutations may be a source of variation in any population of bacteria. when antibiotics are used at first, all the disease-causing bacteria are killed. there is always variation in a population and might include resistant bacteria. bacteria that are not initially killed by the antibiotic, reproduce passing the resistance on to offspring.

ansver
Answers: 1

Another question on Biology

question
Biology, 21.06.2019 13:30
Which of the following choices is not an effective solution to the energy waste related to inefficient lighting? a. using low-pressure sodium lighting sources b. pointing lights on billboards and street signs upward c. placing light sources on time controls d. shielding light to direct it downward
Answers: 1
question
Biology, 21.06.2019 16:30
How was the climate when the ambulocetus was alive
Answers: 3
question
Biology, 21.06.2019 19:40
Asmall number of finches are removed randomly from the wild and placed in a protected bird area. they are given as much food as they need and have plenty of space. why would natural selection not occur in this population? a. there is no reason for genetic mutation to occur. b. the birds compete for limited resources, c. the population has not reached carrying capacity. d. there is no genetic variation in the finches.
Answers: 1
question
Biology, 22.06.2019 03:30
Pl which diagram illustrates prophase?
Answers: 2
You know the right answer?
Antibiotics, such as penicillin, are drugs that kill or prevent the growth of bacteria. when antibio...
Questions
question
Mathematics, 14.12.2019 14:31
question
Mathematics, 14.12.2019 14:31
question
Mathematics, 14.12.2019 14:31
Questions on the website: 13722361