Brock Biology of Microorganisms (15th Edition)
Brock Biology of Microorganisms (15th Edition)
15th Edition
ISBN: 9780134261928
Author: Michael T. Madigan, Kelly S. Bender, Daniel H. Buckley, W. Matthew Sattley, David A. Stahl
Publisher: PEARSON
bartleby

Concept explainers

bartleby

Videos

Textbook Question
Book Icon
Chapter 7, Problem 1AQ

If DnaA was not regulated in Escherichia coli and multiple rounds of replication were completed before cell division, what would be the consequence to the daughter cell and why? Would the resulting cell still be considered haploid?

Expert Solution & Answer
Check Mark
Summary Introduction

To explain:

What would be the consequences if DnaA was not regulated during the replication of E.coli and why multiple rounds of replication occur before cell division? The resulting cell will be haploid, why?

Concept introduction:

DnaA is a key protein that triggers the initiation of bacterial replication. It also known as the replication initiation factor because this protein promotes the unwinding of DNA (deoxyribo nucleic acid) at the oriC site. The concentration of DnaA is responsible for the onset of DNA replication. These proteins are accumulated during the growth phase of bacteria.

Explanation of Solution

If DnaA was not regulated during the replication of E.coli, multiple rounds of replication might occur resulting in multiple copies of DNA. Multiple regulatory mechanisms are present in a bacteria to control DnaA protein. The oriC site of E.coli is rich in adenosine-thymine concentration (AT) and approximately ten DnaA binds with 9bp region of DNA, making it AT rich. Also eight DnaA binding regions are present within the oriC site. Therefore, if DnaA was not regulated properly during the replication process, it will be incomplete and an incomplete copy of the parental DNA might remain after replication and cell division thus making a haploid cell.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
The metabolic pathway below is used for the production of the purine nucleotides adenosine monophosphate (AMP) and guanosine monophosphate (GMP) in eukaryotic cells. Assume each arrow represents a reaction catalyzed by a different enzyme. Using the principles of feedback inhibition, propose a regulatory scheme for this pathway that ensures an adequate supply of both AMP and GMP, and prevents the buildup of Intermediates A through G when supplies of both AMP and GMP are adequate.
QUESTION 27 Label the structures marked A, B, C and explain the role of structure A. W plasma membrane For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIUS ☐ Paragraph Π " ΩΘΗ Β Open Sans, a... 10pt EE
examples of synamptomorphy

Chapter 7 Solutions

Brock Biology of Microorganisms (15th Edition)

Knowledge Booster
Background pattern image
Biology
Learn more about
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
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Text book image
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Text book image
Anatomy & Physiology
Biology
ISBN:9781938168130
Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher:OpenStax College
Text book image
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Biology
ISBN:9781305967359
Author:STARR
Publisher:CENGAGE L
Text book image
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
Text book image
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
The Cell Cycle and its Regulation; Author: Professor Dave Explains;https://www.youtube.com/watch?v=eqJqhA8HSJ0;License: Standard YouTube License, CC-BY
Cell Division - Mitosis and Meiosis - GCSE Biology (9-1); Author: Mr Exham Biology;https://www.youtube.com/watch?v=w7vp_uRA8kw;License: Standard YouTube License, CC-BY