BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Textbook Question
Chapter 10, Problem 2SA
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; enhancers |
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A repressor is a __________ that _________ transcription.
a. small effector molecule, inhibits
b. small effector molecule, enhances
c. regulatory protein, inhibits
d. regulatory protein, enhances
Transcription factors include ______________.
a.
silencers and enhancers
b.
promoters and insulators
c.
activators, repressors, and translational factors
d.
activators and repressors
e.
enhancers and repressors
Proteins that influence RNA synthesis by binding directly to DNA are called_____ . a. promoters c. operators b. transcription factors d. enhancers
Chapter 10 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 10 - Gene expression does not vary by ________. a. cell...Ch. 10 - Binding of _______ to _______ in DNA can increase...Ch. 10 - Prob. 3SACh. 10 - Mechanisms that govern gene expression do not...Ch. 10 - Muscle cells differ from bone cells because they...Ch. 10 - Prob. 6SACh. 10 - Prob. 7SACh. 10 - Prob. 8SACh. 10 - Which of the following includes all of the others?...Ch. 10 - Prob. 10SA
Ch. 10 - Prob. 11SACh. 10 - Prob. 12SACh. 10 - Prob. 13SACh. 10 - True or false? Gene expression patterns can be...Ch. 10 - Match the terms with the most suitable...Ch. 10 - Why are some genes expressed and some not?Ch. 10 - Do the same mechanism of governing gene expression...Ch. 10 - Prob. 3CTCh. 10 - The photos below show flowers from two Arabidopsis...
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- The binding of ________ is required for transcription to start. a. a protein b. DNA polymerase c. RNA polymerase d. a transcription factorarrow_forwardPositive regulators are called: A. Repressors B. Activators C. Enhancers D. None of the abovearrow_forwardOperons______ . a. only occur in bacteria b. include multiple genes c. involve selective gene expressionarrow_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_forwardThe key to epigenetic regulation is ________. a. controlling accessibility to transcription factors and RNA polymerase binding b. biochemical modification of binding factors c. physical modification of the DNAarrow_forwardAn enhancer is a _____________ that ___________ the rate of transcription. a. trans-acting factor, increases b. trans-acting factor, decreases c. cis-acting element, increases d. cis-acting element, decreasesarrow_forward
- _____ is the combination of a seat, elation, another modifications to the histones that allow for changes in DNA winding and unwinding a. Epigentics b. Histone code c. Heterochromatin d. Post translational modificationsarrow_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_forwardRNA splicing removes ________ from the RNA transcript. a. exons b. axons c. intronsarrow_forward
- Tightly coiled DNA is ________. a. known as hypermethylated b. translationally regulated c. transcriptionally inactivearrow_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_forwardA mutation in Ras that prevents Ras from hydrolyzing GTP. Would cause? Why? A. Increased proliferation B. Decreased proliferationarrow_forward
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