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A nurse is caring for an 8-year-old with Guillain-Barré Syndrome (GBS) .On hourly rounds,the nurse assesses that the child's lung sounds are diminished,respiratory rate is 8 breaths/min and shallow,and pulse oximeter is 88%.What action by the nurse takes priority?
Lactose Repressor
The lactose repressor is a protein that binds to the promoter region of the lactose operon in bacteria, regulating the metabolism of lactose by inhibiting the transcription of lactose-utilizing genes.
Transcription
The process in which the DNA sequence in a gene is copied into mRNA, serving as the first step in gene expression.
Lactose Operon
A gene regulatory mechanism in bacteria that allows the cells to adapt to the presence of lactose, enabling the digestion of this sugar when it is available.
Negative Control
A genetic control system in which a regulatory protein binds to DNA, turning off transcription of a gene. Compare with positive control.
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