DQuestion 4When tryptophan is presentThe trp operon is transcribedThe trp operon is NOT transcribedOnly the first gene of the trp operon is transcribedOnly the first two genes of the trp operon are transcribedDQuestion 5GAP Genes, Pair-Rule Genes and Segment Polarity Genes areMaternal Effect GenesZygotic GenesAll answers correct

Name: DQuestion 4When tryptophan is presentThe trp operon is transcribedThe
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Description: DQuestion 4When tryptophan is presentThe trp operon is transcribedThe trp operon is NOT transcribedOnly the first gene of the trp operon is transcribedOnly the first two genes of the trp operon are transcribedDQuestion 5GAP Genes, Pair-Rule Genes an

for the given question 4. Tryptophan is present and help in the turning on and off of the trp…

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When tryptophan is present The trp operon is transcribed O The trp operon is NOT transcribed Only the first gene of the trp operon is transcribed O Only the first two genes of the trp operon are transcribed

When tryptophan is present The trp operon is transcribed O The trp operon is NOT transcribed Only the first gene of the trp operon is transcribed O Only the first two genes of the trp operon are transcribed

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter16: Regulation Of Gene Expression

Section: Chapter Questions

Problem 3TYK

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Figure 16.5 In E. coli, the tip operon is on by default, while the lac operon is off. Why do you think that this is the case?
For the E. coli lac operon, when lactose is present: a. and glucose is absent, cAMP binds and activates catabolicactivator protein (CAP). b. and glucose is absent, the level of cAMP decreases. c. activated CAP binds the repressor protein to remove it from the operator gene. d. the cell prefers lactose over glucose. e. RNA polymerase cannot bind to the promoter.
The a/a operon is an inducible operon that controls the production of the sugar arabinose. When arabinose is present in a bacterium it binds to the protein AraC, and the complex binds to the initiator site to promote transcription. In this scenario, AraC is a(n). activator inducer repressor operator
40The accepted term for the functional investigation of a gene that starts with the gene sequence rather than a mutant phenotype is forward genetics. Yesorno 41Alu elements in the human genomes are examples of SINE elements. Yesorno 42The lac operon has three lac operators. Yesorno
Matching type Choices are in the picture 11. regulating elements in the operon 12. ribosome propels to the next bases 13. dozen of initiation factors involving methionly tRNA 14. eRF recognizes UGA 15. TATA box in the promoter region
Create a metabolism cocept map using these terms RepressorInducer RiboswitchRepression InductionPositive regulationActivatorOperator Heat shocklac operontrp operon Catabolite RepressionHeat shocksigma-32 Negative regulationTwo-component regulationSensor Kinase Autoinducing Peptide (AIP)Response regulatorSigma factorsFeedback inhibitionProtein StabilityQuorum SensingRNA regulationAntisense RNAHomoserine Lactone (AHL)
The promoter of an operon is the site to which RNApolymerase binds to begin transcription. Certain basechanges in the promoter result in a mutant site towhich RNA polymerase cannot bind. Would you expect mutations in the promoter that prevent binding ofRNA polymerase to act in trans on another copy ofthe operon on a plasmid in the cell, or only in cis onthe copy immediately adjacent to the mutated site?
. In an effort to determine the location of an operator sitefor a negatively regulated gene, you have made a seriesof deletions within the regulatory region. The extent ofeach deletion is shown by the line underneath the sequence, and the resulting expression from the operon(i = inducible; c = constitutive; − = no expression) isalso indicated.... GGAT C T T AGCCGGCTAACATGATAAATATAA......C C T AGAATCGGCCGA TTGTA C T A TTT ATAT T ...1 i2 –3 c4 –5 ca. What can you conclude from these data about thelocation of the operator site?b. Why do you think deletions 2 and 4 show no expression of the gene?
1. Please tell me: What's a mutation in moleculer terms? 2. When a mutation deletes a base in genomic DNA, how does it affect the expression product production and reading frame? 3. How does induction control enzyme synthesis using lactose operon?
You are studying an operon containing three genesthat are cotranscribed in the order hupF, hupH, andhupG. Diagram the mRNA for this operon, showingthe location of the 5′ and 3′ ends, all open readingframes, translational start sites, stop codons, transcription termination signals, and any regions thatmight be in the mRNA but do not serve any of thesefunctions.
94In the arrested state (7-14 nucleotides) of elongation, ( ) is required to reactivate transcription. 95C. elegans has about 19,000 genes, a significant number of which are organized into operons. Yesorno 96Transcription activator proteins have at least two independently folding domains: 1. DNA binding domain and 2.
Orca is a new type of E. Coli bacterium. Suppa is a nutrient that Orca needs to survive. Suppa can be synthesized by four (4) enzymes (SupA, SupB, SubC, and SupD) in its cell or it can acquire it from its environment. It only synthesizes it's own Suppa when it's really desperate, because there's none around! Draw and describe Orca's operon controlling its synthesis of Suppa.