Which of the following statements explains how strains of methicillin-resistant Staphylococcus aureus appeared two years after doctors began using the antibiotic methicillin?
- The drug-resistant bacteria existed in the population but did not have an advantage until the environment changed with the introduction of methicillin.
- In response to the treatment with methicillin, the bacterial population gradually began to synthesize cell walls using a protein that was not affected by the drug.
- The bacteria that survived the drug methicillin, developed an immunity to the drug.
- The bacteria mutated in response to the drug and began making drug-resistant versions of proteins need to build cell walls.
In response to the treatment with methicillin, the bacterial population gradually began to synthesize cell walls using a protein that was not affected by the drug.
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Answer:
breath in
Explanation:
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Eukaryotic organisms have cells with a nucleus so like people and animals. prokaryotic organisms don't have cells with a nucleus like bacteria
Answer:
Learned behavior is the ability to pick up on commonly dealt-with situations and take after the examples a person has learned throughout their life.
Explanation:
For example, a child is likely to become aggressive if they live with an alcoholic. Why? Because children take after those they are around most often, or what they commonly witness around other people. This is learned behavior. Hope that helps :)
Answer:
Option C , 9:3:4
Explanation:
The options for the questions are there in the attachment
Solution-
This is the case of recessive epistasis in which recessive allele has a masking effect on alleles G and g.
GgHh * GgHh
The offspring will be
GH Gh gH gh
GH GGHH GGHh GgHH GgHh
Gh GGHh GGhh GgHh Gghh
gH GgHH GgHh ggHH ggHh
gh GgHh Gghh ggHh gghh
Green colored - 9
Yellow colored - 3
White colored- 4
