What Two Kinds of Regulation Exist for the Trp Operon

question 3

Multiple Choice

What two kinds of regulation exist for the trp operon in E. coli?

• A) negative regulation and transcription attenuation
• B) negative regulation and positive regulation
• C) positive regulation and transcription attenuation
• D) negative regulation only
• E) transcription attenuation only

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Definitions:

HIV

Human Immunodeficiency Virus, a virus that attacks the immune system and can lead to AIDS if not treated.

Child

A young human being below the age of puberty or below the legal age of majority.

Course Of AIDS

The progression of HIV/AIDS, spanning from the initial infection, through various stages of symptomatic and asymptomatic periods, to the potential end stage known as Acquired Immunodeficiency Syndrome (AIDS).

Initial Infection

The first stage of an infection after the entry of the pathogen into the host, often characterized by the initial onset of symptoms.