Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 14, Problem 7TY
The trp operon is considered _____ blank operon because the protein-encoding genes necessary for tryptophan synthesis are not expressed when the level of tryptophan in the cell is high.
- a. an inducible
- b. a positive
- c. a repressive
- d. a negative
- e. both c and d
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
In order for the lac operon to be triggered, lactose must be present and ________.
a.
cAMP levels low
b.
glucose stores depleted
c.
glucose levels high
in E.coli, high glucose levels reduce cyclic AMP (cAMP) levels which then ______ transcription of the lactose operon.
a.
does NOT change
b.
decreases
c.
increases
Match the key complex or product to its related process of regulating gene expression.
a. Constitutive genes
b. Operons
c. The lac operon
d. An operator
e. A repressor
f. The trp operon
g. Tryptophan
h. A promoter
65. is induced by the presence of lactose in the environment.
66. is a repressed by the presence of tryptophan in the environment.
67. are regions of clustered genes under the control of one promoter.
Chapter 14 Solutions
Biology
Ch. 14.1 - Prob. 1CCCh. 14.2 - Which genes are under the control of the lac...Ch. 14.2 - With regard to regulatory proteins and small...Ch. 14.2 - What were the key observations made by Jacob,...Ch. 14.2 - CoreSKILL What was the eventual hypothesis...Ch. 14.2 - Prob. 3EQCh. 14.2 - Core Skill: Connections Look back at Fig 9.12....Ch. 14.2 - What are the advantages of having both an...Ch. 14.2 - Prob. 2CSCh. 14.3 - Prob. 1CC
Ch. 14.4 - What are the two opposing effects that histone...Ch. 14.4 - Prob. 1CSCh. 14.5 - Prob. 1CCCh. 14.5 - Prob. 2CCCh. 14 - Prob. 1TYCh. 14 - Prob. 2TYCh. 14 - Transcription factors that bind to DNA and...Ch. 14 - Prob. 4TYCh. 14 - For the lac operon, what would be the expected...Ch. 14 - Prob. 6TYCh. 14 - The trp operon is considered _____ blank operon...Ch. 14 - Prob. 8TYCh. 14 - Prob. 9TYCh. 14 - _____ blank refers to the process that allows a...Ch. 14 - Prob. 1CQCh. 14 - Transcriptional regulation often involves a...Ch. 14 - Prob. 3CQCh. 14 - Discuss the advantages and disadvantages of...Ch. 14 - Discuss the advantages and disadvantages of...
Additional Science Textbook Solutions
Find more solutions based on key concepts
2. A gene is a segment of DNA that has the information to produce a functional product. The functional product ...
Genetics: Analysis and Principles
Identify me theme or themes exemplified by (a) the sharp quills of a porcupine (b) the development of a multice...
Campbell Biology in Focus
6. How can you use the features found in each chapter?
Human Anatomy & Physiology (2nd Edition)
True or false? Some trails are considered vestigial because they existed long ago.
Biological Science
Some people consider Pasteur or Koch to be the Father of Microbiology, rather than Leeuwenhoek. Why might they ...
Microbiology with Diseases by Body System (5th Edition)
1. Genetics affects many aspects of our lives. Identify three ways genetics affects your life or the life of a ...
Genetic Analysis: An Integrated Approach (3rd Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- b. c. spores d. all of the above e. none of the above 4. Concerning the lac operon, activation of the protein called CAP by CAMP will enable the complex CAP-CAMP to bind to the a. promoter b. terminator c. activator-binding site d. operator e. coding sequence 5. Bacteria are excellent model organisms for genetic studies, and mutations often result in observable phenotypic changes because a. of their rapid growth b. they are haploid organisms c. they can be studied in relatively inexpensive experiments d. they have a diploid genome e. their phenotypic changes can also be affected by environmental factorsarrow_forwardWhich of these BEST DESCRIBE tryptophan in the Trp Operon? A. Acts as a corepressor B. Acts as a coactivator C. Acts as an inducer D. Acts as an enhancerarrow_forwardThe RNA-induced silencing complex (RISC) _____i. Binds to and unwinds ds siRNA/miRNA to produce ss siRNAs/miRNAii. Creates a block and inhibits translation when the ss siRNA matches the mRNAiii. Mediates the degradation of the siRNA or miRNA to repress gene expression a. I onlyb. II onlyc. I and IId. II and IIIarrow_forward
- Which of the following molecules will experience a large change in cytoplasmic concentration whenthe above tryptophan operon is turned on (in E. coli cells)?A. tryptophan molecules will decrease in concentrationB. lactose molecules will decrease in concentrationC. tryptophan molecules will increase in concentrationD. lactose molecules will increase in concentrationE. none of the abovearrow_forwardIf glucose is absent, but lactose is available, the lac operon will be _______ A. activated B. repressed C. activated, but only partially D. mutatedarrow_forwardIn the trp operon, tryptophan is best characterized as being a: A. repressor B. inducer C. corepressor D. DNA-binding domainarrow_forward
- If tryptophan is presence in the culture media of E.coli then _________. the promoter will be accessed by the RNA polymerase the repressor will bind to the operator the structural genes of the trp operon will be expressed tryptophan will be synthesizedarrow_forwardIn regulations demonstrated by initiation of transcription, if lactose is abundant, lactose in this operon system is termed a. inducer b. coactivator C. corepressor d. operator e. repressor O a. a O b. b Vindows bo c.c O d. darrow_forwardRead the following statements about operons, and mark the FALSE one. O a. Prokaryotes use operons frequently because they are an efficient use of resources O b. The expression levels of the genes in an operon can be regulated individually Genes in an operon are placed next to each other (physically) O d. The genes in an operon share a single promoterarrow_forward
- An operon is repressible—a small effector molecule turns off itstranscription. Which combination(s) of small effector molecule andregulatory protein could be involved in this process?A. An inducer plus a repressorB. A corepressor plus a repressorC. An inhibitor plus an activatorD. An inducer plus an activatorarrow_forwardIn the ara operon in E. coli cells, AraC will bind to its specific target DNA when_ O a. when there is no glucose in cells. O b. it does not bind arabinose O c. it binds arabinose O d. it binds allolactose.arrow_forwardThe tryptophan operon is a repressible operon that is A. transcribed only when glucose is present in the growth medium B. not transcribed whenever tryptophan is plentiful in the growth medium C. permanently turned on D. turned on only when tryptophan is present in the growth mediumarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSON
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Anatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education
Bacterial Genomics and Metagenomics; Author: Quadram Institute;https://www.youtube.com/watch?v=_6IdVTAFXoU;License: Standard youtube license