Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Textbook Question
Chapter 18, Problem 1MC
Almost all of the oxygen gas in today’s atmosphere is present as a result of
- a. outgassing from volcanoes.
- b. aerobic respiration.
- c. endosymbiosis.
- d. photosynthesis.
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Chapter 18 Solutions
Biology: Life on Earth with Physiology (11th Edition)
Ch. 18.1 - describe a likely scenario for the origin of life?Ch. 18.1 - How Would the experiments result charge if oxygen...Ch. 18.1 - describe, for each step in the scenario, some...Ch. 18.2 - describe scenarios for the major evolutionary...Ch. 18.2 - Uranium-235, with a half-life of 713 million...Ch. 18.2 - State the order in which these events occurred,...Ch. 18.2 - Scientists have identified a free living bacterium...Ch. 18.3 - describe fossil evidence of the earliest...Ch. 18.3 - describe the advantages that fostered the origin...Ch. 18.3 - Prob. 3CYL
Ch. 18.4 - Can ancient DNA reveal the secrets of dinosaur...Ch. 18.4 - describe the transitions and innovations...Ch. 18.4 - Prob. 1TCCh. 18.4 - Although it may never be possible to recover DNA...Ch. 18.4 - describe the advantages gained by the first plants...Ch. 18.4 - Does the mudskippers ability to walk on land...Ch. 18.5 - explain how extinction has affected the course of...Ch. 18.5 - Scientists have cloned a number of animal species,...Ch. 18.5 - describe the likely causes of mass extinctions in...Ch. 18.6 - We might be able to more easily distinguish...Ch. 18.6 - The unexpected discovery that humans interbred...Ch. 18.6 - describe the evolutionary history of humans and...Ch. 18.6 - Paleontologists recently discovered fossil...Ch. 18.6 - name and describe some characteristics of the...Ch. 18.6 - describe the key features of the most recent phase...Ch. 18 - Extinctions have occurred throughout the history...Ch. 18 - Because there was no oxygen in the earliest...Ch. 18 - Almost all of the oxygen gas in todays atmosphere...Ch. 18 - What is the evidence that life might have...Ch. 18 - In biological terms, what do you think was the...Ch. 18 - The molecule _________ became a candidate for the...Ch. 18 - Extinction a. generally does not occur except...Ch. 18 - How did the origin of photosynthesis affect...Ch. 18 - Complex cells that contain a nucleus and other...Ch. 18 - In the endosymbiotic origin of the mitochondrion,...Ch. 18 - Explain the endosymbiont hypothesis for the origin...Ch. 18 - The Sperm of early land plants had to reach the...Ch. 18 - Which of the following does not list evolutionary...Ch. 18 - Name two advantages of multicellularity for plants...Ch. 18 - Prob. 5FIBCh. 18 - Prob. 5MCCh. 18 - What advantages and disadvantages would...Ch. 18 - Prob. 6FIBCh. 18 - Prob. 6RQCh. 18 - Prob. 7FIBCh. 18 - Prob. 7RQ
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- A 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_forwardAlmost all of the oxygen gas in today’s atmosphere ispresent as a result ofa. outgassing from volcanoes.b. aerobic respiration.c. endosymbiosis.d. photosynthesis.arrow_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 processes of the carbon cycle involves the incorporation of the carbon in shells of marine organisms into the Earth’s crust? A. Burning of fossil fuels B. Photosynthesis C. Sedimentation D. Aerobic respirationarrow_forwardWhy does an urban park full of trees have a greater cooling effect than an equal-sized urban golf course covered in grass? Pick the BEST answer a) Because trees sequester carbon into their wood b) Because trees photosynthesize c) Because trees create temperature differentials that improve airflow d) Because trees transpire producing evaporative cooling and grass does notarrow_forwardWhich type of organism does NOT photosynthesize? a. Heterotrophs b. Producers c. Cyanobacteria d. Algae e. Autotrophsarrow_forward
- Which of the following processes increase(s) the amount of atmospheric carbon in the carbon cycle? (a) photosynthesis (b) cellular respiration (c) combustion (d) a and c (e) b and carrow_forwardwhat do you think could be done to reduce levels of carbon dioxide in the atmosphere? What could people change that would reduce the burning of fossil fuels?arrow_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_forward
- Understanding that carbon cycles, what action could we do in order to remove carbon from the atmosphere? Group of answer choices a. Dig up less coal b. Discard less plastic in ocean surface water c. Clean up more leaf litter and animal waste d. Plant more treesarrow_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_forwardWhich of the following describes the organisms and/or processes that were most influential in the creation of early Earth ecosystems? a. Extinction of animals and domination of plants b. Build up the greenhouse gas carbon dioxide c. Prokaryotic production of an oxygen rich environment d. Eukaryotic growtharrow_forward
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