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
expand_more
expand_more
format_list_bulleted
Question
Chapter 20.8, Problem 1MQ
Summary Introduction
The freshwater environments differ essentially in the conditions and
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Glomeromycota help extract resources for plants to grow. The plant provides the
Glomeromycota with carbohydrates in exchange. This is an example of a:
a) Saprotroph
b) Symbiote
c) Predator
d) Parasite
If it were possible to increase nitrogen transport from rhizobia in root nodules to any
part of soybean plants, what implications would this have for agriculture and food?
Which of the following explains why pea plants in high soil nitrogen conditions have
so few rhizobial nodules on their roots?
When there is already high soil nitrogen there is a very large cost to having
rhizobial nodules.
The rhizobia bacteria in the nodules fix nitrogen when there isn't enough in the
soil, so when there is already high soil nitrogen there is no advantage for the pea
plant to expend the extra energy housing the rhizobia.
The rhizobia bacteria in the nodules use nitrogen when there isn't enough in the
soil, so in conditions of high soil nitrogen the plant tries to exclude the rhizobia
to keep the nitrogen for itself.
When there is already high soil nitrogen there is no benefit to the plant to
having rhizobial nodules, which can rob the plant of the high nitrogen supplies
so that the rhizobia bacteria do not have to fix the nitrogen themselves.
Chapter 20 Solutions
Brock Biology of Microorganisms (15th Edition)
Ch. 20.1 - Prob. 1MQCh. 20.1 - Prob. 2MQCh. 20.1 - Prob. 3MQCh. 20.1 - How does a microbial population differ from a...Ch. 20.1 - Prob. 1CRCh. 20.2 - Prob. 1MQCh. 20.2 - What is a biogeochemical cycle? Give an example...Ch. 20.2 - Prob. 1CRCh. 20.3 - Prob. 1MQCh. 20.3 - Prob. 2MQ
Ch. 20.3 - Prob. 1CRCh. 20.4 - Prob. 1MQCh. 20.4 - Prob. 2MQCh. 20.4 - Prob. 3MQCh. 20.4 - Prob. 1CRCh. 20.5 - Prob. 1MQCh. 20.5 - Prob. 2MQCh. 20.5 - Prob. 1CRCh. 20.6 - Which phylum of Bacteria dominates bacterial...Ch. 20.6 - What factors govern the extent and type of...Ch. 20.6 - Prob. 3MQCh. 20.6 - In what soil horizon are microbial numbers and...Ch. 20.7 - Prob. 1MQCh. 20.7 - Prob. 2MQCh. 20.7 - Prob. 3MQCh. 20.7 - Prob. 1CRCh. 20.8 - Prob. 1MQCh. 20.8 - Prob. 2MQCh. 20.8 - Prob. 3MQCh. 20.8 - Prob. 1CRCh. 20.9 - What did the Deepwater Horizon spill tell us about...Ch. 20.9 - Prob. 2MQCh. 20.9 - Why is release of sulfide from oxygen minimum...Ch. 20.10 - How does Ostreococcus differ from Prochlorococcus?...Ch. 20.10 - How does the organism Prochlorococcus contribute...Ch. 20.10 - How does Roseobacter differ from Prochlorococcus?Ch. 20.10 - Prob. 1CRCh. 20.11 - What is proteorhodopsin and why is it so named?...Ch. 20.11 - Prob. 2MQCh. 20.11 - Prob. 3MQCh. 20.11 - Why are dilute culture media used for isolating...Ch. 20.11 - Prob. 1CRCh. 20.12 - Prob. 1MQCh. 20.12 - What molecular adaptations are found in...Ch. 20.12 - Prob. 1CRCh. 20.13 - Prob. 1MQCh. 20.13 - Prob. 2MQCh. 20.13 - What alternative sources of energy are suggested...Ch. 20.13 - Deep-sea sediments show decreasing nutrient levels...Ch. 20.14 - How does a warm hydrothermal vent differ from a...Ch. 20.14 - Prob. 2MQCh. 20.14 - Prob. 3MQCh. 20.14 - Would you expect to find the same types of...Ch. 20 - Prob. 1AQCh. 20 - Prob. 2AQCh. 20 - Global warming has been suggested to result in...
Knowledge Booster
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
- Which species requires the least amount of nutrients in order to grow: Lemna polyrhiza or Lemna gibba? Lemna gibba O Lemna polyrhizaarrow_forwardA mature amoebae cyst that has four ring-like nuclei could be a) Entamoeba histolytica b) Entamoeba coli c) Entamoeba dispar d) Entamoeba gingivalisarrow_forwardHow does the fungus Glomus aid the acquisition of nutrients byplants?arrow_forward
- Endomycorrhiza of forest trees contributes to the efficient nutrient cycling in tropical forest ecosystems. Reason.arrow_forwardWhich 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,arrow_forwardHow does balanus larvae/mL affect the population of balanus and chthmalaus?arrow_forward
- What is the mode of nutrition of an organism named Mushroom? a.)Photo-autotrophic b.)Chemo-autotrophic c.)Saprophytic d.)Parasitic e.)Herbivore f.)Carnivore g.)Omnivorearrow_forwardWhat is apomixis and what is its importance?arrow_forwardWhy are Cryptosporidium parvum and cryptosporidium hominis associated with water-borne outbreaks of diseases?Why are water supplies infected in the first place ? thank you!arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
5 Human Impacts on the Environment: Crash Course Ecology #10; Author: CrashCourse;https://www.youtube.com/watch?v=5eTCZ9L834s;License: Standard YouTube License, CC-BY
Aquatic Ecosystems; Author: Ocean Research & Conservation Association (ORCA);https://www.youtube.com/watch?v=4tU08jCvwGg;License: Standard YouTube License, CC-BY
Aquatic Ecosystems; Author: David Akerman;https://www.youtube.com/watch?v=9T6Q2I_kPeo;License: Standard Youtube License