BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Textbook Question
Chapter 18, Problem 14SA
During the Precambrian, _______.
a. atmospheric oxygen concentration declined |
b. bacteria, archaea, and early eukaryotes arose |
c. dinosaurs became extinct |
d. all of the above |
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Chapter 18 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 18 - An abundance of___________ in Earths early...Ch. 18 - The first interval of Earths existence is called...Ch. 18 - The prevalence of ironsulfur cofactors in...Ch. 18 - Miller and Urey created a reaction chamber that...Ch. 18 - RNA in ribosome catalyzes formation of peptide...Ch. 18 - By one hypothesis, clay________. a. facilitated...Ch. 18 - Photosynthesis carried out by one group of...Ch. 18 - Mitochondria are most closely related to...Ch. 18 - The presence of ozone in the upper atmosphere...Ch. 18 - A ribozyme consists of ___________. a. clay c. DNA...
Ch. 18 - A rise in oxygen in Earths air and seas set the...Ch. 18 - Which of the following was not present by the end...Ch. 18 - The first chloroplasts evolved from ___________....Ch. 18 - During the Precambrian, _______. a. atmospheric...Ch. 18 - Arrange these events in order of occurrence, with...Ch. 18 - Researchers looking for fossils of the earliest...Ch. 18 - Rickettsia bacteria always live as parasites...
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- Chronologically arrange the evolutionary events with 1 being the earliest and 6 the most recent. ____ 1 a. Onset of oxygen-releasing pathway of photosynthesis ____ 2 b.Liquid water appears ____ 3 c.Origin of protocells ____ 4 d. Emmergence of the first eukaryotes ____ 5 e. Origin of chloroplasts ____ 6 f. The big bangarrow_forwardThe fossil record shows how ________________ a. dead organisms were buried b. organisms have changed over time and when organisms lived on Earth c. parents of the offsprings d. evolution occurredarrow_forwardChronologically arrange the evolutionary events, with 1being the earliest and 6 the most recent.___ 1 a. onset of oxygen-releasing___ 2 pathway of photosynthesis___ 3 b. liquid water appears___ 4 c. origin of protocells___ 5 d. emergence of the first___ 6 eukaryotes e. origin of chloroplasts f. the big bangarrow_forward
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