Microbiology: An Evolving Science (Fourth Edition)
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 9.6, Problem 1TQ
Summary Introduction

To review:

The fact that dnaK genes arose in archaea.

Introduction:

The 70 kilodalton heat shock proteins (HSP70s) are also called dnaK. These are found in almost all living organisms. The main function of HSP70 is protein folding. It also protects the cell from thermal and oxidative stress. It helps in the transfer of transmembrane proteins by stabilizing it in a partially folded state.

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For bacteria living in a rapidly changing environment, would a population of bacteria capable of conjugation be more successful than one that could not undergo conjugation? Explain why. Include in your answer a description of the process of conjugation and its advantages over other mechanisms of DNA transfer between prokaryotic organisms.
If most of the DNA in Bacteria and Archaea is coding DNA and much of the DNA in higher plants and animals is non-coding (does not code for proteins), does this fact make it reasonable that the single-celled Bacteria and Archaea have lower mutation rates per base-pair than do eukaryotes? Why or why not?
Sequences of mitochondrial DNA would be expected to most closely resemble sequences from     nuclear genome sequences of unicellular eukaryotes like protozoa and some fungi.     bacteria that carry out non-oxygenic photosynthesis using sulfur as a reducing agent.     bacteria that carry out aerobic respiration (use oxygen as terminal electron acceptor).     bacteria that carry out oxygenic photosynthesis using water as reducing agent.
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Archaea; Author: Bozeman Science;https://www.youtube.com/watch?v=W25nI9kpxtU;License: Standard youtube license