Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Chapter 27, Problem 6R
Summary Introduction
To review:
The symbiotic relationship of cyanobacteria, mycorrhizae, Rhizobium and Frankia with their respective hosts.
Introduction:
In a symbiotic relationship, both organisms associating with each other are mutually benefitted. Nitrogen-fixing bacteria provide nitrogen, which is essential for organisms in amino acid synthesis, and in return the host provides a habitat; an anaerobic condition and nutrients necessary for bacterial growth. The process which is involved in the conversion of atmospheric nitrogen into ammonia is known as nitrogen fixation. The reaction is catalyzed by an oxygen-sensitive nitrogenase enzyme.
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Check out a sample textbook solutionStudents have asked these similar questions
Symbiosis is a close relationship between different species where at least one requires the other for survival. Parasitism, commensalism, and mutualism are the major types of symbiosis. Why is the relationship between Rhizobium and its host considered mutualism and not one of the other types of symbiosis?
The microorganisms responsible for symbiotically fixing nitrogen in the nodules on
the roots of legume plants are:
bacteria
actinomycetes
algae
fungi
O autotrophs
Which is false among A-E regarding symbiotic nitrogen fixation?
A) O Initiation of the symbiosis involves communication between the plant and bacteria
B)O Within the plant, the bacteria differentiate into N2 fixing bacteroids
C) O The N2-fixation process is sensitive to oxygen.
D) O The bacteria infect the root of the plant via an infection thread.
E) O None are false; A-E are all true,
Chapter 27 Solutions
Microbiology: An Introduction
Ch. 27 - The koala is a leaf-eating animal. What can you...Ch. 27 - Give one possible explanation of why Penicillium...Ch. 27 - In the sulfur cycle, microbes degrade organic...Ch. 27 - Why is the phosphorus cycle important?Ch. 27 - DRAW IT 5. Identify where the following processes...Ch. 27 - Prob. 6RCh. 27 - Outline the treatment process for drinking water.Ch. 27 - Prob. 8RCh. 27 - Bioremediation refers to the use of living...Ch. 27 - NAME IT 10. These nitrogen-fixing prokaryotes...
Ch. 27 - Activated sludge system a. the process takes place...Ch. 27 - Prob. 2MCQCh. 27 - Nitrogen fixation a. the process takes place under...Ch. 27 - Prob. 4MCQCh. 27 - The water used to prepare intravenous solutions in...Ch. 27 - CO2+H2SLightLightC6H12O6+S0 a. aerobic respiration...Ch. 27 - Prob. 7MCQCh. 27 - CO2+8H++8eCH4+2H2O a. aerobic respiration b....Ch. 27 - Prob. 9MCQCh. 27 - Coliforms are used as indicator organisms of...Ch. 27 - Prob. 1ACh. 27 - Explain the effect of dumping untreated sewage...Ch. 27 - Flooding after two weeks of heavy rainfall in...Ch. 27 - The bioremediation process shown in the photograph...
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- Punctate, errose, lobate, dry, convex, swarming, yellow, and circular are all terms that describe: anabolism cellular morphology colonial morphology catabolismarrow_forwardWhy would it be disadvantageous for a plant to form a symbiotic relationship with a mycorrhizal fungus when phosphate is abundant in the soil surrounding its roots?arrow_forwardWhich of the following would be an example of a microbial chemoautotroph? A yeast using oxidation/reduction of organic compounds as the energy source and organic compounds as the carbon source. An archaean using oxidation/reduction of inorganic compounds as the energy source and a organic compounds as the carbon source. A cyanobacterium using light as the energy source and CO2 as the carbon source. A bacterium using oxidation/reduction of inorganic compounds as the energy source and CO2 as the carbon source.arrow_forward
- Describe the two symbiotic relationships between a fungus and another organism along with the explanation that how each partner is affected by the association.arrow_forwardAll of the following are ways microorganisms adapt to limited nutrients except: synthesize increased amount of enzymes for uptake and metabolism of limited nutrients form metabolically active highly resistant endospores synthesize enzymes needed to use a different nutrient acetic acid adjust the rate at which they metabolize nutrientsarrow_forwardHow do plants benefit from symbiotic associations with bacteria? With fungi? (answer must not exceed one paragraph)arrow_forward
- label the ectoplasm, endoplasm, pseudopodia, nucleus, and cell membrane of amoeba please use arrow and draw on the picturearrow_forwardRuminants (like cattle) are herbivores but lack the necessary enzymes to digest cellulose from plants. Part of the digestive tract of ruminants contains a microbial community that can break down cellulose. These microbes gain energy from the plant material, and byproducts of their metabolism provide the host with a source of Carbon and energy. What type of symbiosis does this relationship describe?arrow_forwardMost organisms that are considered resident microbes would fall into which of the following categories of symbiotic relationships with their host organisms? Commensalism Amensalism Resident microbes are not in symbiotic relationship with their host organisms Parasitism Mutualismarrow_forward
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