PRESCOTT'S MICROBIOLOGY
11th Edition
ISBN: 2818440045677
Author: WILLEY
Publisher: MCG
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Chapter 20, Problem 2AL
Summary Introduction
Archaea can be categorized into six groups based on morphological and physiological differences. However, Bergey’s manual of systemic bacteriology, a taxonomic organization divides archaea into two phyla Crenarchaeota and Euryarchaeota. There are three types of carbon fixation that have been characterized in archaea. This includes the reductive acetyl-CoA pathway, dicarboxylate/4-hydroxybutyrate cycle (DC/HB), and the 3-hydroxypropionate/4-hydroxybutyrate cycle (HP/HB). The dicarboxylate/4-hydroxybutyrate cycle (DC/HB) is an autotrophic pathway, which occurs commonly occurs in two Crenarchaeota family includes, Desulfurococcales and Thermoproteales.
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Contrast autotrophy in the following phototrophs:cyanobacteria; purple and green sulfur bacteria; Chloroflexus.
. The anaerobic, chemoautotrophic archaeobacterium Methanococcus jannaschii uses which of the following carbon-fixation pathways to obtain organic carbon from CO2?
the Hill reaction
the Wood-Ljungdahl pathway
the Calvin cycle
oxygenic photosynthesis
the Krebs cycle
Explain why the statement is true.
Photosynthesis is hypothesized to have been made possible by the appearance of chlorophyll associated with the mesozones of the cyanobacterial
Chapter 20 Solutions
PRESCOTT'S MICROBIOLOGY
Ch. 20.1 - MICRO INQUIRY Given that the DC/HB pathway uses...Ch. 20.1 - Prob. 2MICh. 20.1 - Prob. 1CCCh. 20.1 - Why do methanogens use the reductive acetyl-CoA...Ch. 20.1 - Prob. 3CCCh. 20.1 - Compare the ATP and NADH yield of each of the...Ch. 20.2 - MICRO INQUIRY Identify the potential electron...Ch. 20.2 - Retrieve, Infer, Apply What are thermoacidophiles...Ch. 20.2 - Prob. 2CCCh. 20.2 - Compare the carbon and sulfur metabolism of...
Ch. 20.2 - Prob. 4CCCh. 20.2 - Prob. 5CCCh. 20.3 - MICRO INQUIRY What are the mechanisms by which...Ch. 20.3 - Retrieve, Infer, Apply Why are the growth yields...Ch. 20.3 - Prob. 2CCCh. 20.3 - What is the ecological and practical importance of...Ch. 20.3 - Where are extreme halophiles found, and what is...Ch. 20.3 - What is the difference between sensory rhodopsin...Ch. 20.3 - How is Thermoplasma able to live in acidic, very...Ch. 20.3 - In what way are members of the genus Archaeoglobus...Ch. 20 - Prob. 1RCCh. 20 - Prob. 2RCCh. 20 - Prob. 3RCCh. 20 - Prob. 4RCCh. 20 - Prob. 5RCCh. 20 - Prob. 6RCCh. 20 - Prob. 7RCCh. 20 - Some believe that archaea should not be separate...Ch. 20 - Prob. 2ALCh. 20 - Prob. 3ALCh. 20 - Prob. 4ALCh. 20 - Prob. 5ALCh. 20 - Prob. 6ALCh. 20 - Prob. 7AL
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