Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Textbook Question
Chapter 18, Problem 1FTB
Because there was no oxygen in the earliest atmosphere, the first cells must have derived energy by __________
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The first organisms that oxygenated the atmosphere were a. cyanobacteria b. phototrophic organisms c. anaerobic organisms d. all of the above
Here is the question: What was the likely source of the raw material incorporated into the first life forms? I believe it is carbon, but I don't know why it is carbon. What I mean is, why is carbon considered the thing that makes something alive? Why are eukaryotes and prokaryotes simply considered alive just because they have carbon. Would that mean that carbon is alive because carbon has carbon? I would appreciate an anwser because I'm really trying to understand everything I run across. I love educating myself and I'm on a quest for knowledge. Thanks guys!
BIOLOGY
How did life most likely originate in the planet? Choose below.
- Biogeochemical theory
- Special Creation
- Spontaneous Generation
- Panspermia
Chapter 18 Solutions
Biology: Life on Earth (11th Edition)
Ch. 18 - 1. Almost all of the oxygen gas in today’s...Ch. 18 - Extinction a. generally does not occur except...Ch. 18 - 3. In the endosymbiotic origin of the...Ch. 18 - 4. Which of the following does not list...Ch. 18 - Prob. 5MCCh. 18 - 1. Because there was no oxygen in the earliest...Ch. 18 - 2. The molecule ________ became a candidate for...Ch. 18 - 3. Complex cells that contain a nucleus and other...Ch. 18 - 4. The sperm of early land plants had to reach the...Ch. 18 - 5. Early plants that protected their seeds within...
Ch. 18 - Prob. 6FTBCh. 18 - Amphibians gave rise to ____________, which had...Ch. 18 - 1. What is the evidence that life might have...Ch. 18 - Prob. 2RQCh. 18 - 3. Explain the endosymbiont hypothesis for the...Ch. 18 - 4. Name two advantages of multicellularity for...Ch. 18 - What advantages and disadvantages would...Ch. 18 - 6. Outline the major adaptations that emerged...Ch. 18 - Outline the evolution of humans from early...Ch. 18 - Extinctions have occurred throughout the history...Ch. 18 - In biological terms, what do you think was the...
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- Photosynthesis carried out by one group of ________ resulted in Earths first increase in atmospheric oxygen levels. a. archaea c. protists b. bacteria d. algaearrow_forwardA rise in oxygen in Earths air and seas set the stage for the evolution of _______. a. aerobic respiration c. photosynthesis b. fermentation d. sexual reproductionarrow_forwardThe first organisms that oxygenated the atmosphere were ______. a. cyanobacteria b. phootrophic organisms c. anaerobic organisms d. allof the abovearrow_forward
- Which of the following was not present by the end of Precambrian? a. archaea c. fungi b. bacteria d. fisharrow_forwardWhich sequence of events accurately describes the history of the planet (from oldest to youngest)? Eukaryotes appear, Oxygen increases in the atmosphere, Prokaryotes appear, Oxygen increases in the atmosphere, Eukaryotes appear, Prokaryotes appear Prokaryotes appear, Oxygen increases in the atmosphere, Eukaryotes appear Prokaryotes appear, Eukaryotes appear, Oxygen increases in the atmospherearrow_forwardAn abundance of___________ in Earths early atmosphere would have prevented the spontaneous assembly of organic compounds on early Earth. a. hydrogen b. methane c. oxygen d. nitrogenarrow_forward
- The table below shows four organisms and the biological processes each uses. Select the organisms that removes carbon from the atmosphere.arrow_forwardWhich of these steps probably occurred first in the chemical andbiological evolution of life?a. The cell membrane of a protobiont formed.b. The first organic molecules formed.c. The original genetic material was RNA.d. Simple organic monomers formed from inorganic materials.arrow_forwardScientist have determined that the early Earth had no free oxygen anywhere. Briefly explain what evidence in the rock layers that scientists found to prove when the early conditions on earth had free oxygen in the atmosphere.arrow_forward
- Chloroplasts of green algae evolved from_____ . a. cyanobacteria b. archaea c. red algaearrow_forwardThe early earth atmosphere was _____. MULTIPLE CHOICE. Choose only one. a. Reducing and favors biosynthetic reactions b. Reducing, due to absence of carbon dioxide c. Oxidizing, due to abundance of oxygen d. Oxidizing an favors breakdown of moleculesarrow_forwardWhich are thought to have evolved first, aerobic bacteria or photosynthetic bacteria? Explain.arrow_forward
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