Microbiology With Diseases By Taxonomy (6th Edition)
6th Edition
ISBN: 9780134832302
Author: Robert W. Bauman Ph.D.
Publisher: PEARSON
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Chapter 7, Problem 20MC
Summary Introduction
Introduction:
The process of transcription and translation are governed in a rightful manner for the production of the adequate amount of proteins. The cell knows the timings for turning on and turning off gene expression with the help of operon.
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Which of these BEST DESCRIBE tryptophan in the Trp Operon?
A. Acts as a corepressor
B. Acts as a coactivator
C. Acts as an inducer
D. Acts as an enhancer
What do you call the site of activators that bind to the DNA molecule ?
A. enhancer
B. operon
C. operator
D. II
E. I
In the trp operon, tryptophan is best characterized as being a:
A. repressor
B. inducer
C. corepressor
D. DNA-binding domain
Chapter 7 Solutions
Microbiology With Diseases By Taxonomy (6th Edition)
Ch. 7 - DNA replication requires a large amount of energy,...Ch. 7 - In bacteria, polypeptide translation can begin...Ch. 7 - Prob. 3TMWCh. 7 - Prob. 4TMWCh. 7 - Clinical Case Study Deadly Horizontal Gene...Ch. 7 - Which of the following is most likely the number...Ch. 7 - Which of the following is a true statement...Ch. 7 - Prob. 3MCCh. 7 - Prob. 4MCCh. 7 - Prob. 5MC
Ch. 7 - Prob. 6MCCh. 7 - Prob. 7MCCh. 7 - Prob. 8MCCh. 7 - Prob. 9MCCh. 7 - Prob. 10MCCh. 7 - Which of the following is not a mechanism of...Ch. 7 - Prob. 12MCCh. 7 - Prob. 13MCCh. 7 - Which of the following are called jumping genes?...Ch. 7 - Prob. 15MCCh. 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 - Prob. 24MCCh. 7 - The trp operon is repressible. This means it is...Ch. 7 - The three steps in RNA transcription are...Ch. 7 - Prob. 2FIBCh. 7 - Prob. 3FIBCh. 7 - Prob. 4FIBCh. 7 - An operon consists of ____________,...Ch. 7 - Prob. 6FIBCh. 7 - A daughter DNA molecule is composed of one...Ch. 7 - Prob. 8FIBCh. 7 - Prob. 9FIBCh. 7 - ____________ is a recombination event that occurs...Ch. 7 - Prob. 11FIBCh. 7 - Prob. 12FIBCh. 7 - Prob. 1SACh. 7 - Prob. 2SACh. 7 - Prob. 3SACh. 7 - Polypeptide synthesis requires large amounts of...Ch. 7 - Prob. 5SACh. 7 - Prob. 6SACh. 7 - Prob. 7SACh. 7 - Prob. 8SACh. 7 - Describe how DNA is packaged in both prokaryotes...Ch. 7 - Prob. 10SACh. 7 - Prob. 11SACh. 7 - Prob. 12SACh. 7 - On the figure below, label DNA polymerase I, DNA...Ch. 7 - Prob. 2VICh. 7 - Prob. 3VICh. 7 - If molecules of mRNA have the following nucleotide...Ch. 7 - A scientist uses a molecule of DNA composed of...Ch. 7 - Prob. 3CTCh. 7 - Prob. 4CTCh. 7 - Prob. 5CTCh. 7 - Suppose that the E. coli gene for the lac operon...Ch. 7 - Prob. 7CTCh. 7 - Prob. 8CTCh. 7 - Prob. 9CTCh. 7 - How can knowledge of nucleotide analogs be useful...Ch. 7 - The endosymbiotic theory states that mitochondria...Ch. 7 - Prob. 12CTCh. 7 - Prob. 13CTCh. 7 - Prob. 14CTCh. 7 - What DNA nucleotide triplet codes for codon UGU?...Ch. 7 - Prob. 17CT
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- Prokaryotes are lacking in their DNA sequence. A. introns В. еxons. C. promoter sites D. operonsarrow_forwardYou are studying a bacterial plasmid that contains 3 operons and 9 genes. How many transcriptional promoters are on this plasmid and how many start codons? Select one: a. 3 promoters and 3 start codons. b. 9 promoters and 9 start codons. c. 3 promoters and 9 start codons. d. 9 promoters and 3 start codons.arrow_forwardWhich of the following is true about operons? A. Contains a cluster of genes transcribed as multiple mRNAs. B. Contains a cluster of genes transcribed as a single mRNA. C. They are commonly found in eukaryotes. D. Can only be regulated by gene activator proteins.arrow_forward
- Which of the following is true of operons?a. They consist of a coordinated set of genes, all of which are regulated as a single unit.b. They may be inducible or repressible.c. Only bacteria and archaea utilize operons.d. All of the above are true.arrow_forwardDefine the following terms: a. promoter b. consensus sequence c. operon d. chromatin-remodeling complex e. general transcription factorsarrow_forwardWhat is an operon? a. A site in the DNA where a regulatory protein binds b. A group of genes under the control of a single promoter c. An mRNA that encodes several genes d. All of the abovearrow_forward
- In a bacterial operon, the active repressor bind to the A. promoter. B. terminator. C. operator. D. regulator.arrow_forwardThe lac operon is usually in the ________ position and is activatedby a/an ________ molecule.a. on, repressor b. off, inducer c. on, inducer d. off, repressorarrow_forwardDefine the following in the context of operons: a. positive control b. give an example of an operon that is under positive control c. negative control d. give an example of an operon that is under negative control e. repressor f. give an example of a repressor molecule g. activator h. give an example of an activatorarrow_forward
- In prokaryotes, the trp operon is under ________ that ________ prevents RNA polymerase from binding. a. negative regulation; biochemically b. negative regulation; physically c. positive regulation; biochemicallyarrow_forwardWhat is an operon ? a. A series of genes controlled by the same operator b. A series of genes on the same mRNA molecule c. A series of genes that all have the same function d. A series of genes all regulated by the same repressorarrow_forwardDefine the following terms: a. chemotaxis b. lac operon c. 80S ribosome d. mRNA secondary structure e. mRNA scanningarrow_forward
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