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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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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- In 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_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_forwardAn organism is able to live well in its environment because of special characteristics called * a) Abiotic factors B) Biotic factors C)Aggregates D)Adaptationsarrow_forward
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- what 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_forwardAnswer 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_forward
- 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 exclusionb. selective pressurec. successiond. environmental resistancearrow_forwardThe three microbial species shown in the graph where all treated at 70° C. When we have to sterilize a food product that contained 107 bacteria, the time taken for each bacterial species would be:- For species A :- 42 minutes For species B :- 70 minutes For species C :- 112 minutes arrow_forward Step 3 The D70 values for these three bacterial populations. D70 for microbial species A= 42 minutes B: D70 microbial species B= 70 minutes C: D70 microbial species C =112 minutes Please answer these questions below: please use drawings too (i learn best that way) For the next three questions, assume D90 = 22 minutes. At what temperature will you treat a food product? How long does it take you to kill 90% of bacteria? How long will it take you to sterilize a food product if it had 109 bacteria on it?arrow_forwardAll of the following choices are autotrophic organisms, EXCEPT for Select the correct response: The Titan Arum "Methusalah" - Bristlecone Pine The Corpse Flower "Hyperion" - Redwoodarrow_forward
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