Chapter 12.4 PP Flashcards
Bacterial variants exist that resist antibiotics
Individuals within populations vary
The genes for antibiotic resistance are passed to other bacteria.
Some of the variation among individuals can be passed on to their offspring
Antibiotics eliminate most of the bacteria in the infected individual
Populations of organisms produce more offspring than will survive
Bacteria with antibiotic resistance are more likely to survive and reproduce
Survival and reproduction are not random
Selecting for drug resistance:
Simple antibiotic treatment can result in direction al selection in bacteria.
True
Some bacteria are more resistant to specific what?
antibiotics
- Maintain drug therapy for months.
2. Combination drug therapy (drug cocktail)
Stopping drug resistance
evolved from common bacteria into dangerous pathogen
MRSA
It is okay to stop taking your antibiotics if you feel better before the prescription is gone?
False
What does “survival of the fittest” really mean?
The organisms best adapted to the environment will survive
Many humans would need to die for humans to develop resistance to bacteria like M.Tuberculosis or MRSA?
True
Humans vary in their immune capacity.
True
Nonresistant humans must die out of the population for resistance to evolve.
True
Most humans are never exposed to TB.
True
Will human evolution solve the superbug problem?
No
