Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Textbook Question
Chapter 20.3, Problem 1TC
If all of Earth’s nitrogen-fixing prokaryotes were to die suddenly, what would happen to the concentration of nitrogen gas in the atmosphere?
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Can someone please help me with 3 multiple choice question, please choose the best that fits, Thank you
1) Most of the nitrogen on earth is contained in nitrogen gas in the atmosphere, which of the following orgnisms convert nitrogen to a form accessible to the rest of the biological community ?
A)fungi
B)nitrogen fixing prokaryotes
C) plants
D) nitrogen fixing protists
2)if a meteor impact or volcanic eruption injected a lot of dust into the atmosphere and significantly reduced the sunlight reaching Earth's surface for one year, which of the following marine communitites would be least affected?
A)coral reef
B)estuary
C) intertidal
D) deep -sea-vent
E) wetlands
3)In terrestrial biomes, which factor is dependent on all the others?
A)mineral nutrient availability
B)annual average precipitation
C) soil structure
D)the specific plant and animal species
E) light availability
How would the nitrogen cycle operate in the absence of bacteria and archaeons?
Explain why eukaryotes cannot fix nitrogen.
Chapter 20 Solutions
Biology
Ch. 20.1 - describe some differences between bacteria and...Ch. 20.1 - describe the typical sizes and shapes of...Ch. 20.2 - What might explain the observation that most...Ch. 20.2 - Unwelcome Dinner Guests A few of the bacteria that...Ch. 20.2 - Some of the enzymes that have important uses in...Ch. 20.2 - Unpleasant breath odors are caused mainly by...Ch. 20.2 - As part of a study on the relationship between...Ch. 20.2 - What is the main advantage of prokaryotic fission,...Ch. 20.2 - describe the range of environments inhabited by...Ch. 20.2 - describe adaptations that help protect prokaryotes...
Ch. 20.2 - explain how prokaryotes reproduce and exchange...Ch. 20.3 - If all of Earths nitrogen-fixing prokaryotes were...Ch. 20.3 - Unwelcome Dinner Guests Many of the bacteria...Ch. 20.3 - explain how prokaryotes affect animal and plant...Ch. 20.3 - explain prokaryotes role in nutrient recycling?Ch. 20.3 - describe how prokaryotes help clean up pollution?Ch. 20.3 - describe some of the pathogenic bacteria that...Ch. 20.4 - Why are viruses unable to replicate outside of a...Ch. 20.4 - Biotechnologists often use viruses to transfer...Ch. 20.4 - describe the structure and characteristics of...Ch. 20.4 - describe the effects they can have on host...Ch. 20.4 - Prob. 3CYLCh. 20.4 - Unwelcome Dinner Guests How do harmful bacteria...Ch. 20 - The name of the process by which DNA is...Ch. 20 - A community of prokaryotes surrounded by slime and...Ch. 20 - Which of the following statements about archaea is...Ch. 20 - Viruses a. are usually photosynthetic. b. consist...Ch. 20 - Applying fertilizer near an oil spill to Increase...Ch. 20 - ____________, have peptidoglycan in...Ch. 20 - Prokaryotic cells are ____________,...Ch. 20 - Many prokaryotes use ____________ to move about....Ch. 20 - ____________,bacteria inhabit environments that...Ch. 20 - Prokaryotes reproduce by ____________ and may...Ch. 20 - The plant nutrient ammonium is produced by...Ch. 20 - Cholera, gonorrhea, and pneumonia are some of the...Ch. 20 - A virus consists of a molecule of __________ or...Ch. 20 - Describe some of the ways in which prokaryotes...Ch. 20 - What are nitrogen-fixing bacteria, and what role...Ch. 20 - Describe some of the extreme environments in which...Ch. 20 - What is an endospore? What is its function?Ch. 20 - What is conjugation? What role do plasmids play in...Ch. 20 - Why are prokaryotes especially useful in...Ch. 20 - Describe the structure of a typical virus. How do...Ch. 20 - Describe some examples of how prokaryotes are...Ch. 20 - How do archaea and bacteria differ? How do...Ch. 20 - Prob. 1ACCh. 20 - Before the discovery of prions, many (perhaps...
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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
- Question 7 The carbon cycle differs from the nitrogen cycle in that ______________________. A) the residence time of carbon is longer. B) the nitrogen cycle requires specialized organisms. C) there is a large atmospheric pool of carbon. D) the carbon cycle is in equilibrium. Question 8 The phosphorus cycle differs from the nitrogen cycle in that ________________. A) there is a large sedimentary pool of nitrogen. B) the phosphorus cycle has a short residence time. C) there is a large sedimentary pool of phosphorus. D) there is no limiting step in the phosphorus cycle.arrow_forwardSome prokaryotes, especially archaea, are capable of living in extreme environments, such as deep-sea vents, where temperatures can reach 80°C (176°F). Few organisms can survive at this temperature. What adaptations might archaea possess that allow them to survive in such extreme heat?arrow_forwardIn what ways are prokaryotes key to the survival of many species?arrow_forward
- Why are prokaryotes so abundant and have such high diversity?arrow_forwardSoil-based nitrogen-fixing bacteria appear to be highly vulnerable to exposure to UV radiation. Suppose that the ozone level continues to be depleted, what are the long-term effects on the planet?arrow_forwardGive examples of free-living and symbiotic nitrogen-fixing microorganisms. Are these prokaryotic or eukaryotic?arrow_forward
- Using the analogy of a one-hour countdown timer, when did prokaryotes originate? When did the colonization of land occur?arrow_forwardAdding high levels of nutrients to a lake or inshore area wouldhave all of the following effects in that environment excepta) death of clams and crabs.b) increased growth of heterotrophic microbes.c) increased growth of photosynthetic organisms.d) increased levels of dissolved O2 .arrow_forwardNitrifying bacteria participate in the nitrogen cycle mainly by(A) converting nitrogen gas to ammonia.(B) releasing ammonium from organic compounds, thusreturning it to the soil.(C) converting ammonium to nitrate, which plants absorb.(D) incorporating nitrogen into amino acids and organiccompoundsarrow_forward
- How does the ocean remove carbon dioxide from Earth’s atmosphere? What role do tiny marine organisms, such as foraminifera, play in the removal of carbon dioxide?arrow_forwardIf all prokaryotes were eliminated from the planeta) animals would thrive because there would be no disease.b) archaea would thrive because there would be no competition for nutrients.c) all animals would die.d) animals and archaea would thrive.arrow_forwardWhich of the following is an example of a symbiotic pair of organisms? Question 3 options: A) elk and deer B) algae and yeast C) orchid and mycorrhizae D) Escherichia coli and Rhizobiumarrow_forward
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