Question: 1. In the lac operon, what are the likely effects on operon gene transcription of the mutations identified below? a. Mutation of the consensus sequence in the lac promoter. b. Mutation of the repressor binding site on the operator sequence. C. Mutation of the loci gene affecting the allosteric site of the protein. I d.

There may be more than one correct answer; select all that apply. mutation of the-10 promoter sequence to more closely resemble the E. coli consensus sequence mutation that deletes the lac, gene mutation that increases the affinity of the operator regions for lactose repressor mutation that reduces the affinity of the lactose repressor for ...

There will be constitutive synthesis of the lac operon due to this mutation. The lac operon will be off because there is low lactose in the media. The phenotype will be similar to an operator constitutive mutation. Determine the lac operon genes level of expression, given the following media characteristics and mutations. Select all of the true ...

I The Lac Operon Activity . For the lac operon wild-type and mutant strains below, in the presence or absence of lactose, please do identify where transcription occurs by drawing arrows signifying transcription of the regulator gene the operon → indicate the following resulting proteins Gre repressor, -galactosidase (product of lacz).

While regulation of the lac operon also depends on the concentrations of glucose and cyclic-AMP, this aspect of regulation is left unexplored in this exercise. In the simulation we will be using today, you will get a visual demonstration of how the very presence or absence of lactose itself controls the cell's ability to digest the lactose.

In both cases, the active repressor binds to the operator and prevents transcription of the operon. In the lac operon, the repressor is inactivated by allolactose, an isomer of lactose that functions as an inducer. Allolactose is only made when lact …View the full answer

Lac permease in bacteria is a membrane protein required to transport lactose into the cytoplasm of bacteria. It is encoded by the lacY gene. Certain lacY mutations render the protein completely unable to transport lactose. In these mutants, what will be the transcriptional state of the lac operon? Multiple Choice The lac operon will be ...

Question: Regulation of the lac operon The lac operon is regulated by both the availability of lactose and glucose. How does E. coli regulate transcription of the lac operon? Sort each condition into the appropriate bin depending on whether or …

Please I need help on this lac operon partial diploid genotypes, I have solution, thorough STEP BY STEP explanation will be appreciated. For the following lac operon partial diploid genotypes, indicate with a (+) or (- ) whether enzymatic activity would be detected for -Galactosidase and/or Permease when lactose is absent and when lactose is ...

The lac operon - TRUE or FALSE: Group of answer choices The CAP protein enables cAMP levels to modulate transcription of the lac operon. True or False When the lac repressor is attached, RNA polymerase is unable to transcribe the genes of the lac operon.