BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 41, Problem 1CT
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 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. Explain the ecological principle that is guiding this practice.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
The term “ecology” is derived from the Greek meaning “house” or “place to live.” However, as used by scientists, the term “ecology” is not the same as “environment.” How do these terms differ?
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.
What happens as the bacteria grow in numbers? What do pathogenic bacteria synthesize?
How do bacteria know what their population density is?
Biologists can set up an ecosystem in a small, sealed aquarium that continues to function without maintenance for years. Describe the minimum biotic and abiotic components it must contain to remain balanced and stable.
Chapter 41 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 41 - The type of place where a species typically lives...Ch. 41 - Which cannot be a symbiosis? a. mutualism c....Ch. 41 - Lizards that eat flies they capture on the ground...Ch. 41 - ________ can lead to resource partitioning. a....Ch. 41 - Prob. 5SACh. 41 - Prob. 6SACh. 41 - Prob. 7SACh. 41 - By the currently favored hypothesis, species...Ch. 41 - Growth of a forest in an abandoned corn field is...Ch. 41 - Prob. 10SA
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
- How are abiotic factors important in the process of natural selection? The abiotic factors of an environment include nonliving things that affect where the organism lives. The conditions or environment where an organism lives is the base for an organism making adaptations. If they are well adapted, they will survive; if not, they will not survive. The abiotic factors are the plants that live in the ecosystem. If the organism can feed off the plants, it will survive. If it cannot find a food source, it will not survive. The abiotic factors are the species within the ecosystem that compete for resources. The organisms that are able to obtain these factors will survive; those that are not will not survive. The abiotic factors are the number of predators present in the ecosystem where the organism lives. If the organism can fend off the predator, it will survive.arrow_forwardIn some marine habitats in New England, the population density of lobsters has been depleted due to heavy fishing. When this happens, it often follows that the diversity of species in the biological communities is reduced. Based on this observation, how would you characterize lobsters? a keystone organism a decomposer a crustacean a superior predator a producer The composition of a community refers to the nutrients available in the soil. type of succession that occurs locally. sunlight available to drive the energy needed for metabolism. extent vegetation covers the ground--a desert has low composition. types of species adapted to living there. Small fish sometimes swim very close to large predatory fishes such as sharks. There is no risk since the shark does not feed on these smaller fish. The small fish are able to eat the remains of prey such as seals that the shark rips apart when eating.…arrow_forwardIf you had to monitor an ecosystem for evidence of pollution, what are one or two indicator species you would want to pay particularly close attention to? You may discuss specific species of organisms, or can discuss organisms that occupy a specific trophic level in an ecosystem’s food web. Explain why you would select these species or this trophic level.arrow_forward
- Some people think that our most environmental goals should be to sharply reduce the rate of population growth in the less-developed countries, where at least 92% of the world’s population is expected to take place between now and 2050. Others argue that the most serious environmental problems stem from high levels of resource consumption per person in more-developed countries, which have moreecological footprints per person. What is your view on this issue? Explain.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_forwardThe tick feeds off the blood of the deer. The tick has its good, but the deer ends up with Lyme’s disease. What type of ecological relationship is this? Explain.arrow_forward
- Which of the following situations show a biotic factor operating within an ecosystem? the rate of water flow in a body of water the kind of climate in a given region the concentration of hydrogen gas in the air carnivores that eat other animalsarrow_forwardMost biologists and climatologists agree that the earth is warming, why do people disregard the evidence for global warming? What should be done to reach the public?arrow_forwardWhich of the following statements about biotic potential is TRUE? Biotic potential of an organism is determined by how they interact with the environment. Increase in food supply increases the biotic potential of an organism. If an organism has higher rate of reproduction, it has higher biotic potential. Small organisms have low biotic potential because of their size.arrow_forward
- What can you do to change the loss of biodiversity that is occurring? What can we, the human population, do? The Facts: Choose a fact and explain its impact to you, to the world, to the environmentarrow_forwardWhich of the following statements about systems theory, as applied in ecology, is incorrect? a) Feedback loops (both positive and negative) are common in ecological systems. b) Components of ecological systems are interconnected c) Ecological systems exhibit emergent properties that are not seen in any individual component in isolation. d) Ecological systems are static in response to changes in any component.arrow_forwardWhich of the following might you expect if you increase the amount of energy (and nutrients) into an ecosystem? Group of answer choices increase rates of competition among species increase the consumption of fossil fuels increase the number of trophic levels decrease the standing croparrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biodiversity hotspots and functional diversity; Author: Stockholm Resilience Centre TV;https://www.youtube.com/watch?v=Gr_eIsFOKr4;License: Standard Youtube License