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 2FIB
The molecule _________ became a candidate for the first self-replicating information-carrying molecule when Thomas Cech and Sidney Altman discovered that some of these molecules can act as _________, which they called _________.
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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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- The Number of Protein-Coding Genes in an Organism’s ________ Is Not Directly Related to Its Biological ________ .arrow_forwardSequence of _______ in a DNA molecule stores genetic information?arrow_forwardResearchers at the Best Southern University wanted to test the same Drug X (which was available from a commercial source) in their study to see if it lowered blood cholesterol levels in mice. Is it: Replicability Reproducibility Generalizability Translatability Rigor Transparencyarrow_forward
- A graduate student, Dolt Colt, at The Best Western University synthesized a drug called Drug X and noted that it lowered blood cholesterol levels in mice. He tried to see if it works in humans. Is it: Replicability Reproducibility Generalizability Translatability Transparency Rigorarrow_forwardWhich of the following was the least likely objective of the Urey-Miller experiment? Group of answer choices To demonstrate that oxygen can be produced by plants. To recreate the conditions of the Earth before life existed and produce the molecules necessary for life from primordial inorganic matter (water, methane, ammonia, and carbon dioxide). To build a case (though not necessarily prove) that life can originate from nonliving matter through natural means. To demonstrate that organic molecules like amino acids (building blocks of protein) and nucleotide bases (building blocks of DNA) do not necessarily originate only from living matter. To demonstrate that lightning may have been the essential energy source (early in Earth's evolution) in the production of molecules essential for life.arrow_forwardThe flow of information in a cell proceeds Group of answer choices - from DNA to RNA to protein. - from RNA to DNA to protein. - from protein to RNA to DNA. - from DNA to protein to RNA. - from RNA to protein to DNA.arrow_forward
- DNA stands for ________.arrow_forwardWhat is the Similarities between the story of Henrietta lacks and the Tuskegee experiment? Don't for google copyarrow_forwardwhat are the uses of nucleic acids? a-Three things about how nucleic acids are used in cells: b-Two other things found interesting about the uses of nucleic acids: c- One questionwe can ask:arrow_forward
- how might a scientist find the patterns in nature? By what means might he or she determine the regularities?arrow_forwardProvide a brief discussion in support of the following statement: “RNA is believed to have played an important role during the origin of life.”arrow_forwardBefore X-ray diffraction and the discovery of the structure of deoxyribonucleic acid (DNA) was identified, what historical knowledge and technology existed? Explain previous models, theories and laws and technologies of that time. (Long response)arrow_forward
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