Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 45, Problem 1CT
With antibiotic resistance rising, researchers are looking for ways to reduce use of these drugs. Some cattle once fed antibiotic-laced food now get probiotic feed that can bolster population of helpful bacteria in the animal's gut. The idea is that if a large population of beneficial bacteria is in place, then harmful bacteria cannot become established or thrive. Which ecological principle is guiding this practice?
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Explain Why bacteria do not cause food-borne illness until they are allowed to grow and increase their population density to a threshold number, like when being left out at room temperature for 12 hours or more.
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Group of answer choices
A. to improve human health with the help of living organisms such as bacteria
B. to clean up areas polluted with toxic compounds by using bacteria
C. to improve soil quality for plant growth by using bacteria
D. to improve bacteria for production of useful chemicals
Which of the following is not true about microbial communities?
A.
They help herbivorous mammals to derive nutrition from otherwise indigestible cellulose.
B.
They consume some of the digesting food for their own nutrition.
C.
They help with vitamin production in the human digestive tract.
D.
They are present only in herbivores.
E.
None of the above answer choices are correct. (That is, answer choices A, B, C and D are all true statements.)
Chapter 45 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 45 - The type of physical environment in which a...Ch. 45 - Which cannot be a symbiosis? a. mutualism b....Ch. 45 - Prob. 3SQCh. 45 - ______ can lead to resource partitioning. a....Ch. 45 - Prob. 5SQCh. 45 - Prob. 1DAACh. 45 - Prob. 2DAACh. 45 - Testing Biological Control Ant-decapitating phorid...Ch. 45 - Prob. 4DAACh. 45 - Lizards that eat flies they catch on the ground...
Ch. 45 - Prob. 7SQCh. 45 - With ______, one species evolves to look like...Ch. 45 - Growth of a forest in an abandoned corn field is...Ch. 45 - Prob. 10SQCh. 45 - If you remove a species from a community, the...Ch. 45 - Prob. 12SQCh. 45 - Prob. 13SQCh. 45 - Prob. 14SQCh. 45 - Prob. 15SQCh. 45 - With antibiotic resistance rising, researchers are...Ch. 45 - Flightless birds on islands often have relatives...
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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
- With antibiotic resistance rising, researchers are looking for ways to reduce the use of antibiotics. Instead of antibiotic-laced food, some cattle now get probiotic feed with cultured bacteria that can establish or bolster populations of helpful bacteria in the animals gut. The idea is that if a large population of beneficial bacteria is in place, then harmful bacteria cannot become established or thrive. Explain the ecological principle that is guiding this practice.arrow_forwardI think my reasoning is wrong because I keep getting Italy as the answer choice. It seems odd to me that I got Italy three times. The other option is Burkina Faso. So, it is either Italy or Burkina Faso. Please carefully review my answer choices because I could be WRONG. Richness refers to the total number of species of microbe in the gut microbe. Italy, Europe seems to have greater gut microbe richness. Diversity- It is the variety of species Italy has a greater variety of species. Evenness refers to the distribution of abundance across the species in the community. Italy seems to have greater evenness as the species percentage is almost similar.arrow_forwardIn the previous simulations we overlooked a very important component of ecosystems: the soil microbial communities. In the following examples we will see how their community succession changes the entire system. Going from the ecosystems that we picture in our minds: -forest landscapes and such- to our gut microbiome or even the artificial ecosystems created to produce food like wine or tea, microbes are everywhere. The first example is from: Development of microbial community during primary succession in areas degraded by mining activities "During open-cast coal mining, large amounts of spoil material overlying coal layers are excavated and deposited aboveground. This process leads to land degradation because it destroys the existing ecosystems or buries them under the deposited spoil material, which is a substrate with very low initial biological activity (Frouz & Nováková, 2005). The type of succession here would The second example is from: Trait- infant gut microbiome ✓ [Select]…arrow_forward
- An organism is able to live well in its environment because of special characteristics called * a) Abiotic factors B) Biotic factors C)Aggregates D)Adaptationsarrow_forwardWhich of the following factors would explain why there is a decreasing trend of microbial population from top to bottom? A. There is a shift in the condition form oxic to anoxic. B. All statements are acceptable. C. The soil particles become larger and not weathered. D. There is a decrease in the available nutrients.arrow_forward1. With antibiotic resistance rising, researchers are looking for ways to reduce use of these drugs. Some cattle once fed antibiotic-laced food now get probiotic feed that can bolster populations of helpful bacteria in the animal's gut. The idea is that if a large population of beneficial bacteria is in place, then harmful bacteria cannot become established or thrive. Which ecological principle is guid- ing this practice?arrow_forward
- Under ideal conditions, a population of bacteria can grow to more than 1036 in 24 hours. This is a statement of the populations: a. Density b. Carrying capacity c. Growth rate d. Biotic potentialarrow_forwardwhat is mutualism? mention any two example where the organisms involved are commercially exploited in modern agriculture.arrow_forwardLarge amounts of nitrates in fertilizer can indirectly harm sea otters and even more directly degrade ecosystems because nitrates contain large quantities of bacteria that cause infections in sea otters they stimulate the growth of algae, increasing kelp growth they reduce seaweed growth, degrading kelp forest habitat and reducing the number of sea urchins for sea otters to eat nitrates contribute to tree growth along beaches, dramatically changing ocean habitats nitrates encourage sea urchin growth, meaning that there is not enough food for the sea ottersarrow_forward
- Answer these two questions A) What are the abiotic factors that support different types of life? B) Explain how ecosystem diversity results in species diversity in a healthy biospherearrow_forwardThe 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 exclusionb. selective pressurec. successiond. environmental resistancearrow_forwardWhich of the following is not an abiotic factor in an ecosystem? A) Available light B) Temperature Water availability Number of organisms in a populationarrow_forward
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