Microbiology with Diseases by Body System (5th Edition)
5th Edition
ISBN: 9780134477206
Author: Robert W. Bauman Ph.D.
Publisher: PEARSON
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Chapter 7, Problem 25MC
Summary Introduction
Introduction:
The trp operon is a type of operon and it consists of a set of genes that codes for the tryptophan production. It is polycistroni in nature. Thus, it consists of a promoter, operator, and five genes coding for the enzymes associated with the tryptophan synthesis.
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Check out a sample textbook solutionStudents have asked these similar questions
In prokaryotes, structural proteins in a single biochemical pathway are usually found as a(n) ________ within the genome.
a.
cluster
b.
polycistronic transcript
c.
operon
In prokaryotes, the trp operon is under ________ that ________ prevents RNA polymerase from binding.
a.
negative regulation; biochemically
b.
negative regulation; physically
c.
positive regulation; biochemically
Prokaryotic transcripts are _____________ since several proteins can be produced from one mRNA.
a. polycistronic
b. monocistronic
c. tricistronic
d. bicistronic
Chapter 7 Solutions
Microbiology with Diseases by Body System (5th Edition)
Ch. 7 - DNA replication requires a large amount of energy,...Ch. 7 - Vibrio vulnificus Infection Greg enjoyed Floridas...Ch. 7 - Prob. 2TMWCh. 7 - Prob. 3TMWCh. 7 - Why is the genetic ancestry of microbes much more...Ch. 7 - Prob. 1CCSCh. 7 - Which of the following is most likely the number...Ch. 7 - Which of the following is a true statement...Ch. 7 - A plasmid is ___________. a. a molecule of RNA...Ch. 7 - Prob. 4MC
Ch. 7 - Prob. 5MCCh. 7 - Which of the following molecules functions as a...Ch. 7 - Prob. 7MCCh. 7 - Prob. 8MCCh. 7 - The Ames test ___________. a. uses auxotrophs and...Ch. 7 - Which of the following methods of DNA repair...Ch. 7 - Prob. 11MCCh. 7 - Prob. 12MCCh. 7 - Which of the following statements is true? a....Ch. 7 - Prob. 14MCCh. 7 - Although two cells are totally unrelated, one cell...Ch. 7 - Prob. 16MCCh. 7 - Prob. 17MCCh. 7 - Prob. 18MCCh. 7 - Prob. 19MCCh. 7 - Prob. 20MCCh. 7 - Prob. 21MCCh. 7 - Prob. 22MCCh. 7 - Prob. 23MCCh. 7 - Before mutations can affect a population...Ch. 7 - Prob. 25MCCh. 7 - Fill in the Blanks 1. The three steps in RNA...Ch. 7 - Fill in the Blanks 2. A triplet of mRNA...Ch. 7 - Fill in the Blanks 3. Three effects of point...Ch. 7 - Fill in the Blanks 4. Insertions and deletions in...Ch. 7 - Fill in the Blanks 5. An operon consists of...Ch. 7 - Prob. 6FIBCh. 7 - Prob. 7FIBCh. 7 - Fill in the Blanks 8. A gene for antibiotic...Ch. 7 - Fill in the Blanks 9. ______ are nucleotide...Ch. 7 - Fill in the Blanks 10. ____________ is a...Ch. 7 - Fill in the Blanks 11.________ RNA carries amino...Ch. 7 - Fill in the Blanks 12. ______ RNA and ______ RNA...Ch. 7 - How does the genotype of a bacterium determine its...Ch. 7 - List several ways in which eukaryotic messenger...Ch. 7 - Compare and contrast intrans and exons.Ch. 7 - Polypeptide synthesis requires large amounts of...Ch. 7 - Describe the operon model of gene regulation.Ch. 7 - Prob. 6SACh. 7 - Prob. 7SACh. 7 - Describe the formation and function of mRNA, rRNA,...Ch. 7 - Prob. 9SACh. 7 - Explain the central dogma of genetics.Ch. 7 - Compare and contrast the processes of...Ch. 7 - Fill in the following table:Ch. 7 - On the figure below, label DNA polymerase I, DNA...Ch. 7 - Prob. 2VICh. 7 - The drugs ddC and AZT are used to treat AIDS....Ch. 7 - If molecules of mRNA have the following nucleotide...Ch. 7 - A scientist uses a molecule of DNA composed of...Ch. 7 - Explain why an insertion of three nucleotides is...Ch. 7 - How could scientists use siRNA to turn off a...Ch. 7 - Prob. 5CTCh. 7 - Prob. 6CTCh. 7 - Prob. 7CTCh. 7 - Prob. 8CTCh. 7 - Corynebacterium diphtheriae, the causative agent...Ch. 7 - Prob. 10CTCh. 7 - The endosymbiotic theory states that mitochondria...Ch. 7 - Hydrogen bonds between complementary nucleotides...Ch. 7 - On average, RNA polymerase makes one error for...Ch. 7 - We have seen that wobble makes the genetic code...Ch. 7 - If a scientist synthesizes a DNA molecule with the...Ch. 7 - What DNA nucleotide triplet codes for codon UGU?...Ch. 7 - Suppose you want to insert into your dog a gene...Ch. 7 - Using the following terms, fill in the following...
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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, enhancesarrow_forwardOperons______ . a. only occur in bacteria b. include multiple genes c. involve selective gene expressionarrow_forwardTranscription factors include ______________. a. silencers and enhancers b. promoters and insulators c. activators, repressors, and translational factors d. activators and repressors e. enhancers and repressorsarrow_forward
- Prokaryotes are lacking in their DNA sequence. A. introns В. еxons. C. promoter sites D. operonsarrow_forwardProteins that influence RNA synthesis by binding directly to DNA are called_____ . a. promoters c. operators b. transcription factors d. enhancersarrow_forwardRNA splicing removes ________ from the RNA transcript. a. exons b. axons c. intronsarrow_forward
- Genes of related function frequently cluster into: please explain the answer a.transcripts b.oligomers c.operons d. operatorsarrow_forwardWhich of the following order of events correctly depicts the Central Dogma as it would occur in an eukaryotic organism? a. DNA --> Protein --> mRNA b. DNA --> Pre-mRNA --> mRNA --> Protein c. mRNA --> DNA --> Protein d. Protein --> DNA --> Pre-mRNA --> mRNA e. DNA --> mRNA --> Proteinarrow_forward8) Which of these describes the function of RNA polymerase? A. Amplifies the “message" by making multiple copies of an mRNA molecule after it has been transcribed from DNA B. Converts a protein sequence to mRNAarrow_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_forwardA gene in liver cells is "off". In the presence of a toxin, a repressor is removed and the gene is transcribed at low levels. How would you describe this regulation? A. Positive induction B. Negative induction C. Positive repression D. Negative repressionarrow_forwardDuring transcription, ___________________. a. A cell divides to make 2 new cells b. A cell divides to make 4 new cells c. DNA is used as a template to create mRNA d. mRNA, rRNA, and tRNA work together to make proteinsarrow_forward
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