MasteringBiology With eText - Access
7th Edition
ISBN: 9780321911940
Author: Johnson
Publisher: PEARSON
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Textbook Question
Chapter 23, Problem 5TY
The large intestine of humans is populated by a complex community of benign microorganisms (not harmful) which compete for nutrients and may prevent pathogenic (harmful) microorganisms from becoming established. Which term would best describe this?
a. competitive exclusion
b. selective pressure
c. succession
d. environmental resistance
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Chapter 23 Solutions
MasteringBiology With eText - Access
Ch. 23 - Prob. 1QCCh. 23 - Prob. 2QCCh. 23 - What are the components of an ecosystem?Ch. 23 - Prob. 2CRCh. 23 - Describe what happens to a country as it undergoes...Ch. 23 - Define zero population growth and explain why it...Ch. 23 - Prob. 5CRCh. 23 - Prob. 6CRCh. 23 - Prob. 7CRCh. 23 - Explain why the water cycle is essential to all...
Ch. 23 - Discuss the importance of the carbon cycle.Ch. 23 - Discuss the phosphorus cycle and its importance.Ch. 23 -
1. Your college campus, including all the humans...Ch. 23 -
2. Which of the following will affect the biotic...Ch. 23 - A population is growing at a rate of 2% per year....Ch. 23 - Which of the following statements is false? a. The...Ch. 23 - The large intestine of humans is populated by a...Ch. 23 -
5. Which of the following characterizes mature...Ch. 23 - Which statement about the human fertility rate is...Ch. 23 -
6. _____ flow(s) one-way through ecosystems while...Ch. 23 - All of the following terms can appropriately...Ch. 23 -
8. A human maintaining a vegan diet (containing...Ch. 23 - All of the following processes are involved in the...Ch. 23 - Prob. 12TYCh. 23 - Prob. 13TYCh. 23 -
12. Which biogeochemical cycle does not include...Ch. 23 - Prob. 15TYCh. 23 - Given absolutely no environmental resistance, how...Ch. 23 - Prob. 2AWKCh. 23 - Prob. 4AWKCh. 23 - Prob. 5AWKCh. 23 - Prob. 6AWKCh. 23 - Prob. 7AWKCh. 23 - Least developed countries tend to be poorer than...
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- Growth of a forest in an abandoned corn field is an example of _______. a. primary succession c. secondary succession b. resource partioning d. competitive exclusionarrow_forwardA feeding relationship that proceeds from algae to a fish, then to a fisherman, and then to a shark is _____. a. a food chain b. a food web c. a and barrow_forwardWhich term describes the process whereby toxic substances increase along trophic levels of an ecosystem? a. biomassification b. biomagnification c. bioentropy d. heterotrophyarrow_forward
- The producer in an ocean grazing food web is usually a _____. a. plant b. animal c. fungi d. planktonarrow_forwardConverting a prairie to a farm field is an example of _________. a. overharvesting b. habitat loss c. exotic species d. climate changearrow_forwardComplete competitors cannot coexist is a statement of the principle of (a) primary succession (b) limiting resources (c) Mllerian mimicry (d) competitive exclusion (e) character displacementarrow_forward
- If you were to remove one of these species, which of these would cause a great impact on the majority of the species? a) phytoplankton b) herring c) humpback whale d) krillarrow_forwardWhen climbing a mountain, we can observe transitions inbiological communities that are analogous to the changes(A) in biomes at different latitudes.(B) in different depths in the ocean.(C) in a community through different seasons.(D) in an ecosystem as it evolves over time.arrow_forwardWhichstatement about organisms’ “niches” is false?a.The niche summarizes environmental factors influencing growth, survival,and reproduction of a species.b.The niche concept was developed by Joseph Grinnell and Charles Elton.c.The “fundamental” niche refers to physical, but notbiological, aspects of the environment.d.Interactions such as competition and parasitism may restrict the size ofan organism’s niche.e.In the laboratory, two species with identical niches are especially easyto maintain in a mixed culture.arrow_forward
- When substances are not broken down in metabolism but stored and passed on to higher trophic levels which of the following processes occurs? Group of answer choices a. Predation b. Coevolution c. Ecological Succession d. Biological Magnification e. Competitionarrow_forwardOf the following, which could be an anthropogenic factor that would influence ecological succession? A. volcanic eruption B. wind storms C. agriculturearrow_forwardThe process whereby oxygen is depleted by the growth of microorganisms due to excess nutrients in aquatic systems is called ________. a. dead zoning b. eutrophication c. retrofication d. depletionarrow_forward
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