Connect With Learnsmart Labs Online Access For Prescott's Microbiology
11th Edition
ISBN: 9781260408997
Author: Joanne Willey
Publisher: Mcgraw-hill Higher Education (us)
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Chapter 26, Problem 2AL
The choice between lysogeny and lysis is influenced by many factors. How would external conditions such as starvation or crowding be “sensed” and communicated to the transcriptional machinery and influence this choice?
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When regulatory protein binds to a mature mRNA in the cytoplasm and prevents it from binding to a ribosome, this is an example of:
A) transcriptional control
B) post-transcriptional control
C) post-translational control
D) epigenetic control
E) translational control
A transcriptional activator protein regulates gene expression in
a) cisb) trans
Expression of a gene, in terms of greater production of the protein it encodes, could be increased by ...
Question 12 options:
A)
increasing transcription of that gene.
B)
inhibiting proteases that break down the protein it encodes
C)
increasing the half life of its mRNA transcript
D)
A and C
E)
A, B and C
Chapter 26 Solutions
Connect With Learnsmart Labs Online Access For Prescott's Microbiology
Ch. 26.1 - List some characteristics used in classifying...Ch. 26.1 - Prob. 2CCCh. 26.2 - Prob. 1MICh. 26.2 - Why do you think T4 evolved to initiate DNA...Ch. 26.2 - What function does HMC glycosylation serve?Ch. 26.2 - Explain why the T4 genome is circularly permuted.Ch. 26.2 - Prob. 1.2CCCh. 26.2 - How is a prophage induced to become active again?Ch. 26.2 - Describe the roles of cII, CIII, repressor (CI),...Ch. 26.2 - How do the temperate phages Mu and P1 differ from...
Ch. 26.2 - How is the envelope of this virus formed? How does...Ch. 26.2 - Why do cold sores recur throughout the lifetime of...Ch. 26.2 - In what part of the host cell does a herpesvirus...Ch. 26.2 - Many small DNA viruses rely on host enzymes for...Ch. 26.3 - Why is the X174 genome considered plus stranded?Ch. 26.3 - Why is it necessary for some ssDNA viruses to...Ch. 26.3 - Prob. 2CCCh. 26.3 - How do parvoviruses trick the host DNA polymerase...Ch. 26.4 - The rotavirus genome encodes 12 proteins. Suggest...Ch. 26.4 - Describe the life cycle of 6 phage. What makes...Ch. 26.4 - Prob. 3CCCh. 26.4 - In what ways are the life cycles of 6 and...Ch. 26.5 - Where in the host does the plus-strand RNA genome...Ch. 26.5 - How do some plus-strand viruses use polyproteins...Ch. 26.5 - What is an IRES? Why is it important?Ch. 26.5 - Prob. 3CCCh. 26.6 - How does that use of a segmented genome by...Ch. 26.6 - Prob. 2CCCh. 26.7 - Prob. 1MICh. 26.7 - Prob. 1CCCh. 26.7 - Prob. 2CCCh. 26.7 - Prob. 3CCCh. 26.8 - Prob. 1CCCh. 26.8 - Trace the HBV multiplication cycle, paying...Ch. 26 - Prob. 1RCCh. 26 - Prob. 2RCCh. 26 - Prob. 3RCCh. 26 - Prob. 4RCCh. 26 - No temperate RNA phages have yet been discovered....Ch. 26 - The choice between lysogeny and lysis is...Ch. 26 - Prob. 3ALCh. 26 - You are studying RNA viruses and have discovered a...Ch. 26 - Prob. 5ALCh. 26 - Prob. 6AL
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- Regarding transcriptional promoter sites, which of the following statements are true? Select one or more than one: a)They are located in the gene (DNA) whose information will be transcribed b)They are found at the 3 'end of the gene that will be transcribed c)Some of them are called 'TATA box' d)They are found in the DNA, 'upstream' of the gene to be transcribed. e)They are proteins of the cytoplasmarrow_forwardwhat is the nature and likely location(s) of a mutant that would, 1)allow constitutive expression of the lac gene? 2)prevent the cell from responding to lactose ( genes are not induced when exposed to lactose)? 3) not allow the cell to utilize lactose even when the genes are inducedarrow_forwardSee figure 12.16b regarding the process by which cyclin regulates the Cdk. Suppose that the cyclin binding site in the Cdk contains these FOUR amino acids in this order from top to bottom: serine, lysine, aspartic acid acid and lysine and the Cdk binding site in the cyclin contains these FOUR amino acids in this order from top to bottom: aspartic acid, aspartic acid, lysine and serine. Use the schematics below to show the R groups and how they might interact to create the cyclin.cdk complex. Label both binding sites, show all charges that will be used to create any bonds, and label all bonds formed and add the ATP active site. A Explain what a kinase does and how the cyclin controls the activity of the Cdk.arrow_forward
- See figure 12.16b regarding the process by which cyclin regulates the Cdk. Suppose that the cyclin binding site in the Cdk contains these FOUR amino acids in this order from top to bottom: serine, lysine, aspartic acid acid and lysine and the Cdk binding site in the cyclin contains these FOUR amino acids in this order from top to bottom: aspartic acid, aspartic acid, lysine and serine. Use the schematics below to show the R groups and how they might interact to create the cyclin.cdk complex. Label both binding sites, show all charges that will be used to create any bonds, and label all bonds formed and add the ATP active site. Cyclin Serine Lysine Aspartic "Acid Lysine -OH NH3t -Coo NH3+ NH3 + -OH Aspartic Aad Aspartic Acid /Lysine Serine сокarrow_forwardWhat is a possible outcome of the addition of a transcription factor such as Myod to the nucleus of a cell? Assume that there are no other factors to either activate or prevent the response of the cell. Group of answer choices A) Production of mRNA from genes that were previously not expresed B)adding methyl groups to DNA C)prevention of protein synthesis D)uncoiling of the chromatin to allow transcriptionarrow_forwardGiven the following schematic for a gene and its associated regulatory regions, answer the following questions by placing the correct letter in the provided blanks please put in the correct letter for the questions What region would provide cell type-specific expression of genes? region What site would significantly increase gene expression rates? = region What region or regions of this gene’s coding sequence are expressed as amino acids = regionarrow_forward
- Regulation can occur at many steps in the pathway of gene expression. Briefly describe at least one example of a regulator at the level of: a) transcriptional initiation b) protein stability c) posttranslational protein modificationarrow_forwardWhat serves as the controlled factors (give three factors), dependent variable and independent variable for the process of transcription and translation?arrow_forwardRho independent terminators Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a a) contain a GC rich stem loop followed by a run of Us b b) need the help of other proteins to terminate transcription C) are very rare in E. coli d) none of the abovearrow_forward
- Expression of a gene, in terms of greater accumulation of the protein it encodes, could be increased by. A) increasing transcription of that gene. B) inhibiting proteases that break down the protein it encodes C) increasing the half life of its MRNA transcript D) A and C E) A, B and Carrow_forwardhe DNA site that is bound by a transcriptional activator regulates gene expression in a) cisb) transarrow_forwardWhich of the following is not a possible outcome of changing the epigenetic code? a) exposure of regulatory region b) binding of transcription factors c) altered gene expression d) repositioning of nucleosomes by polymerasesarrow_forward
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