Biology: Life on Earth Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
11th Edition
ISBN: 9780134153742
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Textbook Question
Chapter 18, Problem 2FTB
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 Plus Mastering Biology with Pearson eText -- Access Card Package (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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- Which 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_forwardOrganisms require ----- and ------ to maintain themselves, grow and reproduce. a. DNA; energy b. food; sunlight c. nutrients; energy d. DNA; cellsarrow_forwardGenomes are the shared genetic information among all living cells on Earth. the sum of genetic information in a cell. usually made of RNA. only found in animal and plant cells. made of proteins.arrow_forward
- If all living organisms have the same pattern, then humans would have the same genetic code as a worm because all species have the same repeated pattern, DNA could not provide the variety needed for the genetic code. Was the hypothesis supported? Be sure to explain your reasoning! (Sentence starters: “Yes, my hypothesis was supported. I know this because…” or “No, my hypothesis was not correct. It was proven to be false because…”)arrow_forwardGenetic information flows in one direction. Which of the following exceptions can actually occur? a. DNA to Protein b. RNA to DNA c. Protein to DNA d. Protein to RNAarrow_forwardHuman DNA contains almost twice as much information as is needed to code for all the substances produced in the body. Likewise, the digital data sent from Voyager II contained one redundant bit out of every two bits of information. The Hubble space telescope transmits three redundant bits for every bit of information. How is entropy related to the transmission of information? What do you think is accomplished by having so many redundant bits of information in both DNA and the space probes?arrow_forward
- In the Isolation of DNA, what is the role of Proteinase K? Choose the best answer -Remove disulfied bonds in proteins -Inhibit enzymes -Catalyze breAkdown of Nucleic acids -Degrade proteinsarrow_forwardSome people compare DNA to a blueprint stored in the office of aconstruction company. Explain how this analogy would extend totranscription and translation.arrow_forwardWhat did the Miller-Urey experiment demonstrate? A. Life originated in outer space and was brought to Earth on a meteor. B. Complex molecules can be formed from water, carbon dioxide, methane, ammonia, and hydrogen gas in a reducing atmosphere. C. Eukaryotic cells evolved from prokaryotic cells following an endosymbiotic event. D. RNA was the genetic storage merial before DNA.arrow_forward
- Which of the following statements represent the flow of genetic information in cells? Group of answer choices DNA to RNA to protein protein to DNA to RNA RNA to DNA to protein DNA to protein to RNAarrow_forwardThe ability of genomes to respond to the outside environmentby changing the developmental trajectories of organisms opens up entire worlds of research. Is evolution selecting “teams” of organisms?arrow_forwardWhat are model organisms?arrow_forward
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