Adenylyl cyclase can generate CAMP for use as a messenger within eukaryotic cells to stimulate the activity of transcriptior factors that can regulate the transcription of operons. O True O False

What is the correct choice

When referring to attenuation in the regulation of the trp operon it would be safe to say that, when there are high levels of tryptophan available to the organism, ________.   tryptophan inactivates the repressor protein translation termination of the trp operon is likely the trp operon is transcribed at relatively high levels the ribosomes stall during translation of the attenuator region transcription termination at the attenuator region is likely

1e regulation of the lac operon by cAMP-CAP complex is an example of positive regulation. what in general does it mean to say that a gene or operon is subject to positive regulation?

Which of the following diagrams best models the regulation of the trp operon when tryptophan is present at high levels?

Explain how the trp operon is regulated by trp repressor and by attenuation.

In eukaryotes, transcription factor activators bind to their enhancer elements and interact with RNA polymerase only through mediators. O True O False

Under which of the following conditions would a lac operon produce the greatest amount of β-galactosidase? The least? Explain your reasoning. Lactose present Glucose present Condition 1 Yes No Condition 2 No Yes Condition 3 Yes Yes Condition 4 No No

Assuming that the level of glucose is low, a mutation in the repressor associated with the lac operon of E. coli which prevents binding of the repressor to lactose should result in_____   Constitutive expression of the lac operon genes ito sagot ko Lack of expression or reduced expression of the lac operon genes under all circumstances  Expression of the genes only when lactose is present  Expression of the genes only when lactose is absent

Predict a possible phenotype from the following mutations in the Lac Operon: a deletion in "GGAATTGTGAGCGGATAACAATTTCAC."