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Which three statements may correctly explain why the population size increases after time point C?a. Bacteria that acquired a mutation that conferred drug- resistance had a growth advantage over non-resistant bacteria.b. The population increase just after time point C indicates that antibiotic use was discontinued.c. Between time points C and D, drug-resistant bacteria were reproducing faster than non-drug resistant bacteria were dying.d. The few drug-resistant bacteria in the population reproduced, quickly leading to a large drug- resistant population.e. Because the population grew more rapidly after time point C, the bacteria must have acquired a second drug- resistance mutation.

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Answer:

A,C, D

Explanation:

Bacteria that acquired a mutation that conferred drug- resistance had a growth advantage over non-resistant bacteria.

Between time points C and D, drug-resistant bacteria were reproducing faster than non-drug resistant bacteria were dying.

The few drug-resistant bacteria in the population reproduced, quickly leading to a large drug- resistant population.

There is no indication that a second antibiotic was used, so it is not possible to assume a second drug-resistance mutation occurred. There is also no indication that antibiotics were discontinued.

Resistant bacteria are the one which fight against the drug or immune system.  It is the capacity of bacteria to withstand the effect of antibiotic which are intended to kill them.

The correct statements are :

a. Bacteria that acquired a mutation that conferred drug- resistance had a growth advantage over non-resistant bacteria.

c. Between time points C and D, drug-resistant bacteria were reproducing faster than non-drug resistant bacteria were dying.

d. The few drug-resistant bacteria in the population reproduced, quickly leading to a large drug- resistant population

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