Biology Biology Practice Problems Solutions Library

Bacterial Gene Regulation Solutions Library

Access 50 Bacterial Gene Regulation video and text solutions to help you complete your homework. Need to revisit the concept? Watch our Bacterial Gene Regulation learn videos.

Browse Solutions

50 solutions

Bacterial Gene Regulation

Q. The expression of lac operon in an E. coli cell missing the gene that encodes for the lac repressor will:A. increase when lactose is present.B. dec...

Solved • Oct 21, 2018

Bacterial Gene Regulation

Q. Under conditions of high glucose and high lactose concentration, what will happen to the levels of β-galactosidase?A. Essentially no β-galactosidas...

Solved • Oct 9, 2018

Bacterial Gene Regulation

Q. How does the presence of glucose in an E. coli's environment affect the transcription of the lac operon? Select all that apply.A. Increased glucose...

Solved • Sep 30, 2018

Bacterial Gene Regulation

Q. If the lac repressor were altered so it could not release lactose once lactose was bound to it then you would predict that:A. The repressor could n...

Solved • Sep 30, 2018

Bacterial Gene Regulation

Q. Which of the following is not a component of the bacterial Trp operon?A. promoterB. inducerC. TrpD geneD. operator

Solved • Sep 29, 2018

Bacterial Gene Regulation

Q. Which is incorrect about inducible operons?A. They have genes turned off by the buildup of end product.B. They are often for use in catabolic pathw...

Solved • Sep 29, 2018

Bacterial Gene Regulation

Q. Repressible operons require that ____ binds to the repressor protein before it can bind to the operator.A. the productB. a cofactorC. a coenzymeD. ...

Solved • Sep 27, 2018

Bacterial Gene Regulation

Q. Gene expression from the lac operon can be controlled in many ways, including a robust negative regulation strategy. Select mutations that would re...

Solved • Sep 25, 2018

Bacterial Gene Regulation

Q. A deletion of the operator sequence in the lac operon would:A. never express lac structural genes.B. not bind the repressor and constitutively expr...

Solved • Sep 14, 2018

Bacterial Gene Regulation

Q. In an E. coli mutant carrying a deletion of the trp operator sequence..A. transcription of the trp operon will proceed in the presence or absence o...

Solved • Sep 13, 2018

Bacterial Gene Regulation

Q. Which region(s) of the lac operon affect the binding of RNA polymerase? Check all that apply.A. CAP binding siteB. lacOC. lacZD. lacYE. lacA

Solved • Sep 1, 2018

Bacterial Gene Regulation

Q. In the absence of tryptophan,A. the inducer cannot bind trpO, so operon gene transcription occurs.B. the active repressor cannot bind trpO, so oper...

Solved • Aug 31, 2018

Bacterial Gene Regulation

Q. Which of the following is true about operons?A. Operons afford the organism the opportunity to simultaneously regulate transcription of multiple ge...

Solved • Aug 31, 2018

Bacterial Gene Regulation

Q. What is the likely state of the lac operon in conditions in which glucose is very low and lactose is plentiful?A. The CAP protein is bound to the C...

Solved • Aug 27, 2018

Bacterial Gene Regulation

Q. What are the typical components of an operon, and what roles do they play in inducing enzyme synthesis?

Solved • Aug 25, 2018

Bacterial Gene Regulation

Q. Several examples ofantisense RNA regulating translation in bacterial cells have been discovered, Molecular geneticists have also used antisense RNA...

Solved • Aug 22, 2018

Bacterial Gene Regulation

Q. When arabinose is present and glucose is absent,A. the ara operon will be turned on by positive controlB. the ara operon will be turned on by negat...

Solved • Aug 15, 2018

Bacterial Gene Regulation

Q. When the lac operon is turned on, it is said to be under:A. Regulatory controlB. Negative controlC. Combinatorial controlD. Negative control

Solved • Aug 15, 2018

Bacterial Gene Regulation

Q. The arginine operon is usually in the _____ position and is _____ by the product.A. off; repressedB. on; repressedC. off; inducedD. on; induced

Solved • Aug 14, 2018

Bacterial Gene Regulation

Q. The lac operon is usually in the _____ position and is activated by a/an _____ molecule.A. off, repressorB. on, repressorC. off, inducerD. on, inducer

Solved • Aug 14, 2018

Bacterial Gene Regulation

Q.  Explain why the lac genes are not transcribed in the presence of glucose. 

Solved • Aug 3, 2018

Bacterial Gene Regulation

Q. Explain the role of allolactose in regulation of the lac genes.

Solved • Aug 3, 2018

Bacterial Gene Regulation

Q. What is the effect of over-expression of Bcl-2?A. promote cancer developmentB. prevent cancer development

Solved • Jul 31, 2018

Bacterial Gene Regulation

Q. What is the function of the product of the galR gene in regulation of the gal operon?A. A positive regulator of the gal operonB. A negative regulat...

Solved • Jul 27, 2018

Bacterial Gene Regulation

Q.  Is the absence of the lac repressor sufficient for initiation of transcription of the lac operon?

Solved • Jul 26, 2018

Bacterial Gene Regulation

Q. Can attenuation take place in eukaryotes?

Solved • Jul 25, 2018

Bacterial Gene Regulation

Q.  What is an operon? How do operons function in bacteria to control gene transcription?

Solved • Jul 25, 2018

Bacterial Gene Regulation

Q. How is quorum sensing linked to the development of antibiotic resistance?

Solved • Jul 2, 2018

Bacterial Gene Regulation

Q. What are the three different types of horizontal gene transfer? Name, describe and compare them.

Solved • Jun 27, 2018

Bacterial Gene Regulation

Q. Describe mycolic acids. Why is it worth it to Mycobacteria to spend the time it takes to make the chemicals?

Solved • Jun 26, 2018

Bacterial Gene Regulation

Q. Compare and contrast Mycobacteria and Mycoplasma regarding 1) structure, 2) favored location, 3) virulence factors.

Solved • Jun 26, 2018

Bacterial Gene Regulation

Q. During infection, what part of the virus enters a bacterium?

Solved • Jun 20, 2018

Bacterial Gene Regulation

Q. Describe the two ways in which the amino acid tryptophan regulates expression of the trp operon in E. coli.

Solved • Jun 19, 2018

Bacterial Gene Regulation

Q. Why is topoisomerase activity necessary for transcription?

Solved • Jun 14, 2018

Bacterial Gene Regulation

Q. 1. What would happen to transcription of the lac operon in an E. coli cell without a functional CAP protein? What would happen in a cell without a ...

Solved • Jun 14, 2018

Bacterial Gene Regulation

Q. Bacteria divide using _________. 

Solved • Jun 8, 2018

Bacterial Gene Regulation

Q. Select the terms on the left to the appropriate blanks on the right to complete the sentences. 

Solved • Jun 5, 2018

Bacterial Gene Regulation

Q. List two bacterial cell structures that could also be described as virulence factors and explain.

Solved • May 31, 2018

Bacterial Gene Regulation

Q. What is meant by a repressible operon? In the case of the trp operon, how is repression exerted? If someone asked you to genetically engineer a str...

Solved • May 31, 2018

Bacterial Gene Regulation

Q. How do you distinguish bacterial cells that carry a vector from those that do not?

Solved • May 4, 2018

Bacterial Gene Regulation

Q. In the absence of glucose, when lactose is present it combines with the repressor, allowing RNA polymerase to carry on transcription.a. Trueb. False

Solved • Oct 11, 2017

Bacterial Gene Regulation

Q. Operons are found in eukaryotes but not in prokaryotes.a. Trueb. False

Solved • Oct 10, 2017

Bacterial Gene Regulation

Q. In the presence of tryptophan, transcription of the trp operon is on. a. True b. False

Solved • Oct 10, 2017

Bacterial Gene Regulation

Q. In the absence of tryptophan, the trp repressor is:a. active and can bind to the operator.b. active and cannot bind to the operator.c. inactive and...

Solved • Oct 10, 2017

Bacterial Gene Regulation

Q. The trp operon consists of ________ genes that encode tryptophan biosynthesis enzymes.a. oneb. twoc. threed. foure. five 

Solved • Oct 10, 2017

Bacterial Gene Regulation

Q. If E. coli bacteria are grown in the absence of lactose: a. The repressor will not bind the operator allowing transcription of the lac operon genes...

Solved • Jul 31, 2017

Bacterial Gene Regulation

Q. If E. coli bacteria are grown in the presence of lactose: a. The repressor will bind the operator allowing transcription of the lac operon genesb. ...

Solved • Jul 31, 2017

Bacterial Gene Regulation

Q. In the Lac operon, the protein that binds to the operator to prevent transcription is:  a. The repressor b. RNA polymerase c. DNA polymerase d....

Solved • Jul 31, 2017

Bacterial Gene Regulation

Q. In the Lac operon, the attachment site for RNA polymerase is:  a. The operator b. The promoter c. The repressor  

Solved • Jul 31, 2017

Bacterial Gene Regulation

Q. A group of prokaryotic genes and other segments of DNA that are controlled together is:  a. A proteome b. A chromosome c. A ribosome d. A repli...

Solved • Jul 31, 2017