The Fluctuation Tests Done by Luria and Delbruck Showed That

question 3

Multiple Choice

The fluctuation tests done by Luria and Delbruck showed that:

• A)antibiotics induce the development of resistance in bacteria
• B)the growth of bacteria fluctuates based on the concentration of antibiotics in the media
• C)the concentration of antibiotics fluctuates in response to the number of bacteria in a sample
• D)resistance to antibiotics occurs spontaneously in bacteria

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Definitions:

Pre-Bötzinger Complex

A cluster of neurons in the brainstem involved in generating the respiratory rhythm, playing a critical role in breathing regulation.

Apnea

A pause in breathing, especially during sleep, that can be a symptom of various sleep disorders.

Respiration

Process of life in which oxygen is used to oxidize organic fuel molecules, providing a source of energy, carbon dioxide, and water; movement of air into and out of the lungs, the exchange of gases with blood, the transportation of gases in the blood, and gas exchange between the blood and the tissues.

Chloride Shift

Diffusion of chloride ions into red blood cells as bicarbonate ions diffuse out; maintains electrical neutrality inside and outside the red blood cells.