What Would Happen to the Lac Operon in the Absence

question 5

Multiple Choice

What would happen to the lac operon in the absence of allolactose?

• A) The structural genes within the lac operon will be constitutively transcribed.
• B) The activator protein will be bound to the operator, which will turn on the structural gene behind it.
• C) The repressor regulator protein binds to the operator and prevents the transcription of the structural gene.
• D) The catabolite activator protein becomes inactivated and no transcription occurs.
• E) The cAMP level rises in the absence of allolactose, which in turn inactivates the transcription.

Recognize the significance of second messengers like DAG in cellular signaling.

Explain the effect of external agents, such as nicotine, on receptor expression levels and discuss potential consequences for cell signaling and behavior.

Understand the molecular changes that occur upon receptor activation, such as GDP replacement with GTP or the entry of sodium ions into the cell.

Understand and perform multiplication of fractions and whole numbers.

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Definitions:

Condition Subsequent

A condition that operates to relieve or discharge one from his obligation under a contract.

Building Code

Regulations that specify the standards for constructed objects such as buildings and nonbuilding structures, ensuring safety, health, and welfare of the occupants.

Excused from Performance

A legal concept where a party is released from fulfilling their obligations under a contract due to unforeseen circumstances that make performance impossible or impracticable.

Mitigate Damages

The requirement for an injured party to take reasonable action to minimize the amount of damages caused by a breach of contract or tort.