Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
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Chapter 9, Problem 3TQ
Summary Introduction
To review:
The statement that rapidly growing bacteria induce more mutations than slowly growing bacteria.
Introduction:
A bacterial cell undergoes cell division in order to produce two daughter cells. The genetic material is also equally divided between the two daughter cells. The bacterial cells require optimal conditions for growth. The process of replication involves copying the information from the parental DNA (deoxyribonucleic acid) strand.
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Students have asked these similar questions
Explain the following statement :
a) initiation of bacteriall DNA replication is an energy requiring process
b) bacterial DNA polymerase can enter the termination sequence but cannot exis
In E. Coli, which enzyme is responsible for removing and correcting mistake
individual nucleotides during replication?
O a) DNA Polymerase I
b) RNA polymerase III
O c) Nuclease
d) DNA polymerase III
A region of DNA has six copies of a trinucleotide repeat. During one round of replication, the template strand slips as shown in the diagram.
How many repeats will the DNA have if the newly synthesized strand is used as a template in the next round of replication?
1
5'-CAG
3'-GTC GTC
4
2
GTCH
3
2
CAG CAG
GTC
3
GTC
5
4
CAG-3'
GTC -5'
6
Next round of DNA replication
Chapter 9 Solutions
Microbiology: An Evolving Science (Fourth Edition)
Ch. 9.1 - Prob. 1TQCh. 9.1 - Prob. 2TQCh. 9.1 - Prob. 3TQCh. 9.1 - Prob. 4TQCh. 9.2 - Prob. 1TQCh. 9.3 - Prob. 1TQCh. 9.4 - Prob. 1TQCh. 9.4 - Prob. 2TQCh. 9.5 - Prob. 1TQCh. 9.6 - Prob. 1TQ
Ch. 9 - Prob. 1RQCh. 9 - Prob. 2RQCh. 9 - Prob. 3RQCh. 9 - Prob. 4RQCh. 9 - Prob. 5RQCh. 9 - Prob. 6RQCh. 9 - Prob. 7RQCh. 9 - Prob. 8RQCh. 9 - Prob. 9RQCh. 9 - Prob. 10RQCh. 9 - Prob. 11RQCh. 9 - Prob. 12RQCh. 9 - Prob. 13RQCh. 9 - Prob. 14RQCh. 9 - Prob. 15RQCh. 9 - Prob. 16RQCh. 9 - Prob. 1TQCh. 9 - Prob. 2TQCh. 9 - Prob. 3TQCh. 9 - Prob. 4TQCh. 9 - Prob. 5TQCh. 9 - Prob. 6TQ
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following statements is false about DNA replication? A) Each lagging strand of DNA is started by an RNA primer. B) DNA polymerase joins nucleotides in the 5' to 3' direction only. C) The leading strand of DNA is made continuously. D) More than one replication fork is present. E) A replication bubble opens in one direction only.arrow_forwardA researcher would like to introduce a foreign gene to bacteria and inserts the gene sequence into a circular DNA fragment. He was surprised to find out that the bacterial colony does not express the gene and realized that he did not introduce an origin of replication to the circular DNA. Although gene was introduced to the bacteria, why did not it express the gene?arrow_forwardIn DNA replication, there are leading and lagging strands because A) DNA replication is conservative and a completely new DNA molecule must be made. B) DNA replication is semiconservative and each strand is copied simultaneously in opposite directions. C) the strands of DNA are parallel and are copied in the same direction simultaneously. D) one strand of DNA is copied faster than the other.arrow_forward
- Which of the following cis-elements in a bacterial origin of replication is where the parental DNA strands first separate when the DNA is bent?Question 30 options: A) GATC sequences B) DnaA box C) AT-rich regionarrow_forwardWhich of the following is NOT correct concerning the initiation of replication in E. coli? Question 29 options: A) It involves a region of the DNA called oriC. B) DnaA proteins bind to the DNA to begin separation of the strands. C) The strands are initially separated at GC-rich regions of DNA. D) Following initial separation, enzymes continue to separate the parental DNA strands around the rest of the chromosome.arrow_forwardA bacterium undergoes four rounds of replication. How many cells would result, and how many of those cells would still have part of an original DNA strand from the starting bacterium?arrow_forward
- Eukaryotes differ from prokaryote in mechanism of DNA replication due toa) Use of DNA primer rather than RNA primerb) Different enzyme for synthesis of lagging and leading strandc) Discontinuous rather than semi-discontinuous replicationd) Unidirectional rather than semi-discontinuous replicationarrow_forwardIn DNA replication, the role of topoisomerase is to Question 11 options: a) "unzip" the double stranded DNA in front of DNA polymerase. b) maintain the single stranded DNA. c) supercoil the DNA after the replication fork has passed. d) relieve supercoil tension in the DNA in front of the replication fork.arrow_forwardDescribe the structure of a bacterial genome, and explain how it differs from a eukaryotic genome. Explain what a plasmid is, and describe the role of plasmids in the spread of antibiotic resistance genes. Explain how bidirectional semiconservative DNA replication copies the circular chromosome of a bacterium during cell division. Explain the steps of replication by DNA polymerase, including initiation, elongation, and termination. Explain the different kinds of mutations and how they occur.arrow_forward
- When a cell is to divide, its DNA must be replicated (copied). a) Indicate the main participating components and their functions. b) Why is it important that the replication goes right and that relatively few mutations occur during the replication?arrow_forwarda) Under normal conditions E. coli produces three DNA polymerases. State their functional similarities and differences. b) List the other proteins and enzymes involved in DNA replication in E.coli and give their functions.arrow_forwardThe above experiment, on DNA synthesis in the intact chromosomes of E. coli (with no virus infection), demonstrates which of the following forms of DNA replication? completely discontinuous replication completely conservative replication completely dispersive replication semi-discontinuous replication semi-conservative replicationarrow_forward
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