subject
Biology, 02.04.2020 03:17 tiadenae22ovtxdr

Some bacteria—sometimes called “super bugs”-have developed a resistance to
certain antibiotics. How does drug resistance develop in bacteria?
A. Unsanitary conditions allow all kinds of bacteria to breed, including those that
are antibiotic resistant.
B. In the bloodstream, different species of bacteria exchange genes and become
resistant to antibiotics.
C. Mutations in some bacterial genes make the bacteria stronger and better able to
defeat the body's immune system.
D. In the presence of an antibiotic, bacteria with genes that make them resistant
survive and eventually take over the population.

ansver
Answers: 2

Other questions on the subject: Biology

image
Biology, 21.06.2019 16:30, abbz13
What adaptations can prey use to avoid predation
Answers: 1
image
Biology, 22.06.2019 02:20, jothianddeepi
Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?
Answers: 3
image
Biology, 22.06.2019 06:00, Shaylaaaaaaaa
Which part of the neuron below is indicated by the arrow, and what is its function? hormones send chemical signals throughout the body to regulate other body processes. hormones are chemical signals that are sent throughout the body to regulate other body processes. hormones send electrical signals throughout the body to regulate other body processes. hormones are electrical signals that are sent throughout the body to regulate other body processes.
Answers: 2
image
Biology, 22.06.2019 13:20, NetherisIsTheQueen
Pl as time goes by and water goes through the water cycle again and again, the amount of water on earth: increases decreases ostays the same goes up and down
Answers: 1
You know the right answer?
Some bacteria—sometimes called “super bugs”-have developed a resistance to
certain antibiotics...

Questions in other subjects: