Biology
12th Edition
ISBN: 9780078024269
Author: Sylvia Mader, Michael Windelspecht
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 20.3, Problem 3CYP
Construct a hypothesis about how cyanobacteria may haveaffected the atmosphere of early Earth.
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Cyanobacteria was responsible for the increase in oxygen levels billions of years ago. They play a decisive role in changing the earth’s environment.
Explain how are Cyanobacteria related in changing the early earth’s environment which later suitable for the development of other organisms.
To which taxonomic group do cyanobacteria belong?a. Domain Archaea c. Domain Bacteriab. Phylum Actinobacteria d. Phylum Fusobacteria
Which of the following extremophiles is the best model for the earliest organisms on Earth?
A. a prokaryote found near hydrothermal vents
B. an archaean capable of surviving in the polar ice caps
C. an anaerobic archaean species
D. a bacterium that thrives in a highly acidic environment
Chapter 20 Solutions
Biology
Ch. 20.1 - Prob. 1CYPCh. 20.1 - Prob. 2CYPCh. 20.1 - Prob. 3CYPCh. 20.1 - Prob. 4CYPCh. 20.2 - Explain the connection between Pasteur’s...Ch. 20.2 - Prob. 2CYPCh. 20.2 - Define three ways in which prokaryotes can...Ch. 20.3 - Prob. 1CYPCh. 20.3 - Prob. 2CYPCh. 20.3 - Construct a hypothesis about how cyanobacteria may...
Ch. 20.4 - Prob. 1CYPCh. 20.4 - Prob. 2CYPCh. 20.4 - Prob. 3CYPCh. 20 - Prob. 1NS.1QCCh. 20 - Prob. 1NS.2QCCh. 20 - Prob. 1NS.3QCCh. 20 - Prob. 2NS.1QCCh. 20 - Prob. 2NS.2QCCh. 20 - Prob. 2NS.3QCCh. 20 - Prob. 1ACh. 20 - Prob. 2ACh. 20 - Prob. 3ACh. 20 - What is the correct order of the stages in the...Ch. 20 - Prob. 5ACh. 20 - Prob. 6ACh. 20 - Prob. 7ACh. 20 - Prob. 8ACh. 20 - Prob. 9ACh. 20 - Prob. 10ACh. 20 - Prob. 11ACh. 20 - Prob. 12ACh. 20 - Prob. 13ACh. 20 - Prob. 14ACh. 20 - Prob. 15ACh. 20 - Prob. 1TSCh. 20 - Prob. 2TSCh. 20 - Prob. 3TS
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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
- Why was the origin of cyanobacteria of suchimportance to the evolution of life on Earth?arrow_forwardHow did the appearance of Cyanobacteria change the atmosphere of the ancient earth ?arrow_forwardMitochondria and chloroplasts contain some DNA, which more closely resembles prokaryotic DNA than (eukaryotic) nuclear DNA. Use this information to suggest how eukaryotes may have originated.arrow_forward
- Propose a hypothesis to explain how bacteria and archaea could have,together, given rise to eukaryotes.arrow_forwardUsing the analogy of a one-hour countdown timer, when did prokaryotes originate? When did the colonization of land occur?arrow_forwardWhich statement about spontaneous generation is false? A. It addresses the formation of living cells from previously nonliving material. B. This was a common belief for during the Middle Ages. C. Pasteur demonstrated that it does not occur under normal laboratory conditions. D. It occurs every time a new species evolves from a preexisting species. E. It apparently occurred at least once – when life on Earth began.arrow_forward
- 7. Which of the following statements about early life on earth is incorrect? A) Earth was anoxic B) Carbon was obtained from CO2 C) Energy was obtained from glucose D) D) Cells were likely chemolitbotrophicarrow_forwardWhat would the results of Pasteur's swan-neck flask experiment have looked like if they supported the theory of spontaneous generation? B. What did Pasteur's experiments not prove? C. How would the presence of endospores in Louis Pasteur's nutrient solutions have affected his conclusions about spontaneous generation?arrow_forwardExplain how the origin of eukaryotic cells involved a unionbetween bacterial and archaeal cells.arrow_forward
- A colleague proposes that the Archaea may be the oldest life form currently inhabiting Earth. Do you agree? Explain.arrow_forwardState in what ways Stanley miller simulated the condition of :-i) Primitive atmosphere on earth.ii) Energy source at the time of origin of life .iii) Formation of organic molecule of life.arrow_forwardArchaea are often found living in extreme conditions of heat, salt, and acidity, which are similar to those found in early earth. Speculate on the origin of life, especially as it relates to the archaea.arrow_forward
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