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 18, Problem 1TQ
Summary Introduction
To review:
The metabolic diversity of Proteobacteria and the use of different molecules to yield energy.
Introduction:
Proteobacteria is a Gram-negative bacterium. Lipopolysaccharide, receptor proteins, and porins in the outer membrane consist of two-thirds of the mass of the membrane. The shape of this class of bacteria can be spiral, cocci or rod. They display a diverse form and
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Chapter 18 Solutions
Microbiology: An Evolving Science (Fourth Edition)
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- Where is the Brocadia anammoxidan found? Does it have any close associations with other organisms?arrow_forwardWhich of the following is true about proteobacteria? Select all that apply. O they are gram negative O they are gram positive O they are typically classified based on their G+C content O Agrobacterium is an example of a proteobacterium O They are all pathogenic O None are pathogenic O Some genera are important members of the nitrogen cycle O They are metabolically diverse Most are extremophiles O Neisseria is an example of a proteobacteriumarrow_forwardChlamydomonas should best be classified under: A) One of the Protista Kingdoms of Eukarya Domain B) Archaea domain C) Plant Kingdom of Eukarya domain D) Animal Kingdom of Eukarya domain E) Bacteria domain Explain whyarrow_forward
- Despite many interesting characteristics and features observed in Archaea, why is there not much study about these organisms?arrow_forwardFrom the standpoint of energy metabolism, how do chemoorganotrophs differ from chemolitotrophs? What carbon sources do members of each group use? Are they heterotrophs or autotrophs?arrow_forwardIn the diagram below, identify the structures of a cyanobacterial cell based on the following descriptions: a) Outer cellular covering which includes: Mucilaginous layer – outermost layer covering the cell wall; protects the cell from harmful factors of the environment Cell wall – found just below the mucilaginous layer; 2 or 3-layered, the inner layer lies in between the outer wall layer and plasma membrane; the outer layer is made of peptidoglycan Innermost plasma membrane – selectively permeable membrane enclosing the cytoplasm b) Cytoplasm – found below the plasma membrane; the protoplasm which contains structures of different shapes and functions. Lamellae, which contain pigments such as chlorophylls, carotenes, xanthophylls, phycoerythrin and phycocyanin, are located in the peripheral region of cytoplasm. Ribosomes may also be found scattered in the cytoplasm. c) Nucleic material – the nucleoplasm that is centrally located in the cell and contains chromatin in the form…arrow_forward
- a.) which two of the following three species are more closely related: Entamoeba histolytica, Escherichia coli, Entamoeba coli? Explain. b.) two organisms are in the same order but not in the same family. From this information, can you determine whether they are in the same class? Explain.arrow_forwardApicomplexans evolved from a photosynthetic ancestor and have the remnant of a chloroplast. This organelle no longer acts in photosynthesis, but remains essential to the protist. Why might targeting this organelle yield an antimalarial drug with minimal side effects in humans?arrow_forwardWhy is it favorable for protozoa to replicate with schizogony versus using simple mitosis? what are the different scenarios that can occur with regards to bacterial growth within a thioglycolate tube? Explain why certain bacteria require one classification versus a different classification. A botanist has been using betaproteobacteria to grow his herb garden, because betaproteobacteria require little nutrients to grow. His garden does not grow successfully, so he comes to you for help to develop the herb garden. Which class of gram negative bacteria would you suggest and why? Why was the botanist’s original idea not going to work?arrow_forward
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