Biology: The Unity and Diversity of Life
15th Edition
ISBN: 9780357093795
Author: STARR
Publisher: CENGAGE LEARNING (CUSTOM)
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Textbook Question
Chapter 10, Problem 2SQ
Binding or ___ to ___ in DNA can increase the rate of transcription of specific genes.
- a. activators; repressors
- b. activators; enhancers
- c. repressors: operators
- d. repressors: enhancers
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Students have asked these similar questions
Proteins that influence RNA synthesis by binding directly to DNA are called_____ . a. promoters c. operators b. transcription factors d. enhancers
A repressor is a __________ that _________ transcription.
a. small effector molecule, inhibits
b. small effector molecule, enhances
c. regulatory protein, inhibits
d. regulatory protein, enhances
Which of the following is not true regarding gene regulation that involves DNA bending?
a. The precise distance between the regulatory sequence and the promoter is important.
b. Effect can be to repress transcription
c. Effect can be to activation transcription
d. Regulated genes can be thousands of base pairs away from the regulatory sites
Chapter 10 Solutions
Biology: The Unity and Diversity of Life
Ch. 10 - Effect of Paternal Grandmother's Food Supply on...Ch. 10 - Effect of Paternal Grandmother's Food Supply on...Ch. 10 - Effect of Paternal Grandmother's Food Supply on...Ch. 10 - Gene expression does not vary by ___ . a. cell...Ch. 10 - Binding or ___ to ___ in DNA can increase the rate...Ch. 10 - Muscle cells differ from bone cells because they...Ch. 10 - Prob. 4SQCh. 10 - Mechanisms that govern gene expression do not...Ch. 10 - Prob. 6SQCh. 10 - Prob. 7SQ
Ch. 10 - Prob. 8SQCh. 10 - Which of the following includes all of the others?...Ch. 10 - Prob. 10SQCh. 10 - Prob. 11SQCh. 10 - A cell with a Barr body is ___ . a. a bacterium b....Ch. 10 - Prob. 13SQCh. 10 - Which of the following statements is incorrect? a....Ch. 10 - Prob. 15SQCh. 10 - Explain why somebut not allof an organism's genes...Ch. 10 - Do the same mechanisms that govern gene expression...Ch. 10 - Prob. 3CTCh. 10 - The photos below show flowers from two Arabidopsis...
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- Binding of _______ to _______ in DNA can increase the rate of transcription of specific genes. a. activators; repressors c. repressors; operators b. activators; enhancers d. repressors; enhancersarrow_forwardIs each of the following statements true or false? A. An enhancer is a type of regulatory element. B. A core promoter is a type of regulatory element. C. Regulatory transcription factors bind to regulatory elements. D. An enhancer may cause the down regulation of transcription.arrow_forwardTwo different types of gene regulatory elements are DNA sequence and protein-based. Which of the following describes them, respectively? a. one blocks translation, the other blocks transcription b. The first is an aporepressor, the second is a promoter c. The first is an enhancer, the second is a repressor d. The first is a activator, the second is a an attenuator e. one is an activist, the other is a protestorarrow_forward
- E. coli has five genes that code for enzymes that make tryptophan. These genes are regulated by a single promoter and transcribed as one long gene. The presence of tryptophan shut down the production of tryptophan by the cell by binding to the repressor. This changes the repressors shape allowing it to bind to DNA operator, blocking RNA polymerase and cutting off the production of tryptophan. a. Describe what woud happen to the operon if some of the cells had a mutation on the repressor, not allowing it to bind with tryptophan. The repressor is described as an allosteric protein. What does this mean? b. Does the tryptophan model demonstrate an inducible or repressible operon? What is your evidence? *arrow_forwardWhich of the following DNA regions is NOT involved on gene expression regulation in Eukaryotes?. ( not enhancer or promotor-proximal) A. Promoter-proximal B. Promoter C. Enhancer D. Operatorarrow_forwardE. coli are grown on a medium containing lactose. Once glucose is added to the medium, the bacteria stop fermenting lactose. Which of the following BEST explains the observed effect? A. Cellular levels of cAMP are lowB.Glucose is bound to the promoter C. Repressor protein is bound to the operator D. Repressor protein is bound to the promoterarrow_forward
- Imagine that mutations occurred in one of the inverted repeat sequences within the rho-independent terminator sequence of a bacterium. What would likely be the consequence of this mutation? Select one: a. Transcription may not be initiated at all. b. Transcription may end prematurely. c. Transcription may be delayed. d. The rho protein won't be able to bind and transcription may not be terminate. e. Transcription may not be terminated and result in much longer RNA.arrow_forwardChanges in a cell that affect micro RNAs lead to cancer because miRNAs... a. help a cell to maintain a tight control on protein levels in a cell. b. decrease the level of a specific protein. c. increase the level of a specific protein. d. prevent the Warburg effect.arrow_forwardPromoters are DNA sequences a. near a transcription start site b. bound to a repressor protein c. that inhibit transcription of a gene d. that stimulate ncRNA activityarrow_forward
- Which statement/s is/are TRUE about transcription?A. During transcription, DNA polymerase binds to RNA and separates the DNA strands.B. RNA polymerase uses one strand of DNA as a template to assemble nucleotides into a strand of RNA.C. RNA polymerase binds only to DNA promoters, which have specific base sequences.D. Promoters are signals in RNA that indicate to RNA polymerase where to begin transcription.E. Transcription occurs in the 3’ to 5’ direction with respect to the growing mRNA strand.arrow_forwardFor each of the following, match with the stage of gene expression being regulated. DNA methylation Feedback inhibition Operons Poly-A tail length A. Post-translational regulation B. Transcriptional regulation C. DNA packaging D. Translational regulationarrow_forward3. Inducers: a. transcribe a messenger off a DNA template b. bind to ribosomes to activate the production of specific proteins c. are a molecule that binds to a repressor to activate it d. are essential to function of transfer RNAs during translation e. bind to repressor protein and transcription of mRNA can then take placearrow_forward
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