When the CAB Allowed Airlines to Charge High Prices on Longer,more

question 75

Multiple Choice

When the CAB allowed airlines to charge high prices on longer,more efficient routes as long as they maintained service on shorter,unprofitable routes,it was allowing

• A)Profit sharing.
• B)Cross-subsidization.
• C)Substitute pricing.
• D)Profit subsidization.

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Definitions:

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.