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Amiraneli [1.4K]
3 years ago
8

the potential for antibiotic resistance was recognized in the early 1940s, almost immediately after the first large-scale clinic

al use of penicillin, the first antibiotic. mass production of penicillin was part of the war effort of world war ii, when the drug was used widely by military populations to treat the wounded. however, even before the war had ended, resistance to penicillin was already being reported. in 1940, british biochemists sir ernst boris chain and sir edward penley abraham published a report about a bacterial enzyme capable of destroying penicillin. in the following decades, overuse and repeated exposure to antibiotic agents favored the selection and replication of numerous strains of antibiotic-resistant bacteria. select all of the statements that accurately portray the role of natural selection in antibiotic resistance. a) when bacteria are repeatedly exposed to antibiotics, they learn how to avoid the antibiotic and survive to reproduce. b) when people overuse antibiotics, the bacteria get resistant to the antibiotic and it is no longer an effective treatment. some bacteria possess a gene for bacterial resistance. these bacteria are likely to survive a course or antibiotics and reproduce. 09 d) bacteria containing the gene for antibiotic resistance can share a plasmid of the gene with other bacteria, allowing the population of bacteria with antibiotic resistance to survive and reproduce. when someone quits taking an antibiotic when they are feeling better, they likely kill only the weaker bacteria. the bacteria with a gene for antibiotic resistance survive, giving them the opportunity to reproduce. e
Biology
1 answer:
Salsk061 [2.6K]3 years ago
3 0

Answer: c,d,e

Explanation:

I did this and this is correct

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bija089 [108]
Parental Phenotypes: "Yellow-Smooth", "Yellow-Wrinkled", "Green-Smooth", "Green Wrinkled".

Parental Genotypes: SsGg  ×   SsGg

Parental Gametes:  SG, Sg, sG, sg

<span>Smooth/Green </span>= S-G- = 9

<span>Winkled/Green </span>= ssG- = 3

Smooth/Yellow = S-gg = 3

Wrinkled/Yellow = ssgg = 1

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Hope this helps!

3 0
3 years ago
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Explanation

The trachea, spiracle, and air sac are part of their respiratory system, Howeber, the tubules are what take away the carbon dioxide from their system. Im not sure if they produce the carbon dioixde. But they are a part of what removes the carbon-dioxide from their body.

8 0
3 years ago
A person shakes up vinegar and oil dressing before pouring it on salads. what is the chemical reason for doing this
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The vinegar is a charged molecule, whereas, the oil is neutral. As like dissolves like, the vinegar can be dissolved with charged molecules and the oil can be dissolved with neutrals. So, to mix vinegar and oil shaking is required.

In case, the person does not mix oil and vinegar dressing before pouring this on the salad, it would not produce a good taste, as the content of vinegar and the oil would not be appropriate.

3 0
4 years ago
Which of the following statements about the phosphorus cycle is false? The main abiotic reservoir for phosphorus is in the soil.
garik1379 [7]

Answer:

Answer for the question:

Which of the following statements about the phosphorus cycle is false? The main abiotic reservoir for phosphorus is in the soil. Plants release dissolved phosphate ions into the soil. Guano can be used by farmers to add phosphorus to the soil. Phosphates that drain from soils into the sea becomes part of new rock and will cycle back into living organisms.

is given below.

Explanation:

The correct answer is given below.

Soil is not the main reservoir for the phosphorous. The main antibiotic phosphorous is in the rocks.

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B) the cattle would have to convert the cellulose structure into starch
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3 years ago
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