**The trp operon is:****(For additional information review the CogBooks Module, answer explained on CogBooks):**---### Diagram Explained:**In the absence of tryptophan:**- **Promoter:** The section of DNA where RNA polymerase binds to start transcription.- **Operator:** A segment of DNA that controls the access of RNA polymerase to the genes.- **Genes (trpE, trpD, trpC, trpB, trpA):** These are the structural genes involved in the tryptophan synthesis pathway. - **Repressor:** Inactive and unable to bind to the operator.- **RNA Polymerase:** Binds to the promoter and proceeds with RNA synthesis.**Visual Representation:**- A linear diagram showing "promoter", "operator", and "trp" genes, with an arrow indicating the direction of RNA polymerase movement due to the absence of a bound repressor.---**When tryptophan is present:**- **Tryptophan (Ligand):** Binds to the repressor, activating it.- **Repressor:** Binds to the operator, blocking RNA polymerase binding, and thus, RNA synthesis is halted.**Visual Representation:**- The same linear diagram, but with RNA polymerase blocked by the repressor bound to the operator. This blockage prevents transcription.---### Options for the Trp Operon:- ○ Both negative inducible and positive repressible- ○ Positive inducible- ● Negative Repressible- ○ Negative inducibleThe correct choice is "Negative Repressible," as the trp operon is turned off in the presence of tryptophan, a characteristic of a repressible system.

Negative inducible operons is a method wherever the active regulator macromolecule binds to the…

The trp operon is: **(for additional information review the CogBooks Module, answer explained on CogBooks): In the absence of tryptophan, the trp repressor dissociates from the operator, and RNA synthesis proceeds. promoter operator trpE trpD trpC trpB trpA RNA polymerase repressor When tryptophan is present, the trp repressor binds the operator, and RNA synthesis is blocked. promoter operator trpE trpD trpC trpB trpA RNA polymerase repressor tryptophan

The trp operon is: **(for additional information review the CogBooks Module, answer explained on CogBooks): In the absence of tryptophan, the trp repressor dissociates from the operator, and RNA synthesis proceeds. promoter operator trpE trpD trpC trpB trpA RNA polymerase repressor When tryptophan is present, the trp repressor binds the operator, and RNA synthesis is blocked. promoter operator trpE trpD trpC trpB trpA RNA polymerase repressor tryptophan

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

See similar textbooks

Similar questions

You are growing E. coli in a laboratory in order to study their operons. The growth media you are using contains lactose, no glucose and no tryptophan. Using your knowledge of operons and their regulation, answer the following questions I really need a in depth epxplantion for the queshtions to make sure i understand the answers a.What effect does lactose have on the bacterial cell’s lac operon? b.What does the absence of glucose do to the bacterial cell? c.You now add tryptophan to the cell. What would happen to the bacterial cell and its trp operon? d.What kind of regulation does lactose provide to an operon’s repressor?
Please answer item number 5, 6 , and 7 in the image provided.
What is a specific region in the trp operon that you could mutate so it expresses the trp operon in conditions of excess tryptophan. Why will this mutation cause this? Operon structure: promoter, operater, structural genes promoter - DNA region that is the site of RNA polymerase sigma binding and transcription initiation operator – DNA region that influences gene expression through its interaction with a protein (transcription factor) structural genes – gene whose expression is being regulated; encodes a polypeptide or functional RNA
The operator of the lactose operon in E. Coli is located: between the promoter and the repressor gene upstream of the promoter between the promoter and the structural genes anywhere on the chromosome among the structural genes
Give typing answer with explanation and conclusion
The organization and function of the lac operon in E. coli is shown in the following figures: XXI Transcription Repressor mRNA Translation RNA polymerase M M Flask ZYA XXXX Active M-repressor protein Repressor active, operon off. The repressor protein binds with the operator, preventing transcription from the operon. (a) An inducible operon Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings Allolactose (inducer) Carbon/Energy Source 0 Z MInactive repressor protein (a) An inducible operon Transcription Translation XXX Permease B-Galactosidase Transacetylase Operon mRNA 3 Repressor inactive, operon on. When the inducer allolactose binds to the repressor protein, the inactivated repressor can no longer block transcription. The structural genes are transcribed, ultimately resulting in the production of the enzymes needed for lactose catabolism. Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings Suppose you inoculate three flasks of minimal…
Bob determines that Red/pink protein is synthesized at much higher amounts than the Brown protein; Bob thinks that this is how the burger always is perfectly medium-rare (pink/red in the interior of the patty, with a small amount of brown at the burger’s surface). Bob also knows that R and B both are transcribed from the single operon. Briefly describe the biological mechanism allowing for accumulation of more R than B protein.
Consider this strain of E. coli with lac operon alleles: IS pt o* z* y+ /T p* oCz- Y+ In a written response, briefly explain if beta-galactosidase AND permease will be expressed, and if so, will they be inducible or constitutive.
Like the lac operon, the hexose operon is controlled by a separate regulatory protein under the control of its own promoter (see the schematic of the operon below). The hexose regulatory protein is sensitive to fatty acyl CoA levels. When all hexose fuel sources are depleted, the bacteria switch to lipid metabolism and fatty acyl CoA levels increase. This turns expression of the hexose operon off. +1 +1 Regulatory Gene Pregulator P operon Hexose Operon Genes regulator promoter operon promoter
In the tryptophan operon, tryptophan is considered a Group of answer choices coactivator inducer an enhancer corepressor an attenuator
The figure above shows the structure of lac operon. Which of the following BEST describes what happens in the presence of lactose? Select one: Repressor-lactose complex forms, both the complex and RNA polymerase bind to R. Transcription of S is initiated. Repressor-lactose complex forms and the complex will not bind to R. Transcription of S is initiated. Both repressor and RNA polymerase bind to R. Transcription of S is initiated. Repressor-lactose complex forms and the complex binds to R. Transcription of S is prevented.
When CAMP binds to the Catabolite Activator Protein (CAP), it causes a conformational change on the protein, which results in binding to the CAP- binding site on the DNA and molecule is known as a(n) of the lac operon. This conformational change induced by the binding of another transcription activation; allosteric effect transcription repression; binding effect translation; distortion effect mutation; interactive effect attenuation; compression effect O O O O