What event occurs when a microbe acquires a genc mutation that allows it to resist the effects of a . Virulence b. Infection c. Antibiotic resistance d. Placebo effect

when a microbe acquires a gene mutation that allows it to resist the effects of antibiotic resistance. The right answer is option c.

Explanation:

Antibiotics are used to treat the infections caused by bacteria. The antibiotics are effective in removing the effects or diseases caused by bacteria. It kills the bacteria or stops its growth. However sometimes due to mutation the same bacteria once responsive to antibiotics become resistant and hence no effect on treatment.

The change in gene sequence of bacteria due to mutation causes changes in its genome. The antibiotic designed to act on specific sequences or strain renders ineffective when encounter the changes.

Single nucleotide polymorphism is the most common form of mutation in antibody resistant bacteria.

The bacteria which are antibody resistant survive and reproduce more and pass on the beneficial trait to its offspring.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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the answer is:

carbon dioxide