BIOLOGY W/ MASTERING >C<
10th Edition
ISBN: 9781269904889
Author: Campbell
Publisher: PEARSON C
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Chapter 27, Problem 8TYU
SCIENTIFIC INQUIRY • INTERPRET THE DATA The nitrogen-fixing bacterium Rhizobium infects the roots of some plant species, forming a materialism in which the bacterium provides nitrogen, and the plant provides carbohydrates. Scientists measured the 12-week growth of one such plant species (Acachiirrorata) when Infected by six different Rhizobium strains.
(a) Graph the data. (b) Interpret your graph.
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Chapter 27 Solutions
BIOLOGY W/ MASTERING >C<
Ch. 27.1 - Prob. 1CCCh. 27.1 - Contrast the cellular and DNA structures of...Ch. 27.1 - Prob. 3CCCh. 27.2 - Although rare on a per gene basis, new mutations...Ch. 27.2 - Distinguish between the three mechanisms by which...Ch. 27.2 - In a rapidly changing environment, which bacterial...Ch. 27.2 - WHAT IF? If a nonpathogenic bacterium were to...Ch. 27.3 - Distinguish between the four major modes of...Ch. 27.3 - A bacterium requires only the amino acid...Ch. 27.3 - WHAT IF? Describe what you might eat for a...
Ch. 27.4 - Explain how molecular systematics and metagenomics...Ch. 27.4 - WHAT IF What would the discovery of a bacterial...Ch. 27.5 - Explain how prokaryotes, though small, can be...Ch. 27.5 - MAKE CONNECTIONS Review Figure 10.6. Then...Ch. 27.6 - Identify at least two ways that prokaryotes have...Ch. 27.6 - Prob. 2CCCh. 27.6 - Prob. 3CCCh. 27 - Describe features of prokaryotes that enable them...Ch. 27 - Mutations are rare and prokaryotes reproduce...Ch. 27 - Describe the range of prokaryotic metabolic...Ch. 27 - How have molecular data informed prokaryotic...Ch. 27 - In what ways are prokaryotes key to the survivaI...Ch. 27 - Prob. 27.6CRCh. 27 - Genetic variation in bacterial populations cannot...Ch. 27 - Photoautotrophs use (A) light as an energy source...Ch. 27 - Which of the following statements is not true? (A)...Ch. 27 - Prob. 4TYUCh. 27 - Prob. 5TYUCh. 27 - Prob. 6TYUCh. 27 - Prob. 7TYUCh. 27 - SCIENTIFIC INQUIRY INTERPRET THE DATA The...Ch. 27 - WRITE ABOUT A THEME: ENERGY In a short essay...Ch. 27 - SYNTHESIZE YOUR KNOWLEDGE Explain how the small...
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- Make a diagram showing the interconnection between carbon and nitrogen cycle. Indicate possible microorganisms (scientific name) involved in each process.arrow_forwardWhat is nature inspired carbonmaterials? Describe the synthesis of corn-cob derived carbon from corn biomass.arrow_forwardSCIENTIFIC INQUIRYINTERPRET THE DATA The feather moss Pleurozium schreberiharbors species of symbiotic nitrogen-fixing bacteria.Scientists studying this moss in northern forests found thatthe percentage of the ground surface “covered” by the mossincreased from about 5% in forests that burned 35 to 41 yearsago to about 70% in forests that burned 170 or more years ago.From mosses growing in these forests, they also obtained thefollowing data on nitrogen fixation: Age(years after fire) N fixation rate[kg N/(ha · yr)] 35 0.001 41 0.005 78 0.08 101 0.3 124 0.9 170 2.0 220 1.3 244 2.1 270 1.6 300 3.0 355 2.3arrow_forward
- Which of the following statements is/are TRUE for nitrogen fixation? A. Process is performed by nitrifying soil bacteria. B. Performed by bacteria present in the roots of all plants. C. Reduction of N2 to NH3. D. Consumes a negligible amount of ATP.arrow_forwardMAKE CONNECTIONS Focusing just on the effects oftemperature, would you expect the global distributionof C4 plants to expand or contract as Earth becomeswarmer? Why? (See Concept 10.4.)arrow_forwardSCIENTIFIC INQUIRY Acid precipitation has an abnormallyhigh concentration of hydrogen ions (H+). One effect ofacid precipitation is to deplete the soil of nutrients suchas calcium (Ca2+), potassium (K+), and magnesium (Mg2+).Suggest a hypothesis to explain how acid precipitationwashes these nutrients from the soil. How might you testyour hypothesis?arrow_forward
- Many plants that produce nodules for nitrogen-fixing bacteria are common on disturbed sites. Explain how these plants might simultaneously compete with and facilitate other plant species.arrow_forwardwhat process can give plants an advantage because of the presence of these bacteria undergoing the following process can provide them with nitrogen for the production of protein? A. nitrifying B. denitrifying C. ammonification D. nirtogen fixingarrow_forwardInaquatic ecosystems, leaves with high lignin content decompose:a.rapidly because lignin is a nutrient-rich compound.b.rapidly because lignin enhances colonization by decomposing fungi.c.slowly because lignin reduces colonization by decomposing fungi.d.slowly because lignin is a carbon-poor compound.e.slowly because lignin-containing leaves sink rapidly.arrow_forward
- Explain the importance of water, carbon, nitrogen and phosporus in nature.arrow_forwardWRITE ABOUT A THEME: ORGANIZATION As you read inthis chapter, fungi have long formed symbiotic associationswith plants and with algae. In a short essay (100–150 words),describe how these two types of associations may lead toemergent properties in biological communities.arrow_forwardFungi (as well as bacteria and various animals) are major decomposers. What would the world be like if there were no decomposers of any kind?arrow_forward
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