In the Absence of Tryptophan, What Happens to the Genes

question 81

Multiple Choice

In the absence of tryptophan, what happens to the genes within the trp operon?

• A)The regulator without tryptophan-binding prevents the genes from being transcribed.
• B)The regulator falls off the operator and structural genes get transcribed.
• C)Lack of tryptophan increases the level of cAMP, which leads to activation of CAP protein and gene expression.
• D)The active repressor binds to the operator and genes do not get transcribed.
• E)The active activator binds to the operator and transcription of structural genes takes place.

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Definitions:

Induced Consumption

The portion of consumer spending that increases or decreases as disposable income increases or decreases, respectively.

Disposable Income

The collective fiscal pool available to households for spending and saving post income tax engagements.

Induced Consumption

The concept in Keynesian economics referring to the portion of consumer spending that increases with income. Higher income levels tend to lead to higher consumer spending.

Disposable Income

The total financial resources available to people or households for savings and expenses after subtracting income tax.