When first used in medicine in the 1940s, penicillin was uniformly effective in killing the bacterium staphylococcus aureus. today, ____________________ has led to an increase in antibiotic-resistant alleles, and humans are increasingly at risk from untreatable staphylococcus aureus infections. a. molecular genetics b. natural selection in staphylococcus aureus populations c. natural selection in human populations d. uncleanliness in hospitals e. the substitution of methicillin for penicillin?

Question

02-02-2018
Biology

contestada

When first used in medicine in the 1940s, penicillin was uniformly effective in killing the bacterium staphylococcus aureus. today, ____________________ has led to an increase in antibiotic-resistant alleles, and humans are increasingly at risk from untreatable staphylococcus aureus infections. a. molecular genetics b. natural selection in staphylococcus aureus populations c. natural selection in human populations d. uncleanliness in hospitals e. the substitution of methicillin for penicillin?

Respuesta :

Otras preguntas

Is the passage of dialogue written correctly or incorrectly? "Oh, wow!" Ashley cried. "I love these shoes." "They would look good on you," said her friend. A. c

William Penn called his colony a holy experiment. Chronicle the development of Pennsylvania and emphasize the advantages that the colony offered.

PLEASE HELP Solve. m^-5 = 1/32 m = ________ ?

An editorial is designed to be ________________.

Which statement describes an alternate theory of acids and bases? (1) Acids and bases are both H+ acceptors. (2) Acids and bases are both H+ donors. (3) Acids a

Marissa rode her bike to the park and back home. She lives 2 3/10 miles from the park. How many miles did Marissa ride her bike in all?

Steve and Carl are driving from Scranton to Bridgeport, a distance of 180 miles. If their speed averages 60 miles an hour, how long will it take them to get the

Which type of molecule is CF4?(1) polar, with a symmetrical distribution of charge (2) polar, with an asymmetrical distribution of charge (3) nonpolar, with a s

Which principle asserts that citizens, not politicians or government officials, hold ultimate authority?

Dejanras Dejanras · Answer 1 · 2018-02-11T15:49:51+01:00

When first used in medicine in the 1940s, penicillin was uniformly effective in killing the bacterium staphylococcus aureus. today, natural selection in staphylococcus aureus populations has led to an increase in antibiotic-resistant alleles.
Staphylococcus aureus is a Gram-positive, round-shaped bacterium and common cause of skin infections.
Antibiotic resistant strains of S. aureus such as methicillin-resistant S. aureus (MRSA) is problem in medicine.