Examlex
Value added is the difference between the value of good as they leave a stage of production and cost of the goods as they entered that stage of production.
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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