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 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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The data processing cycle in Figure2-1 is an example of a basic process found throughout nature. Relate the basic input/process/store/output model to the functions of the human body.
The 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.
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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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- In a study published in Science, Premack and Woodruff asked: "To what extent does the chimpanzee comprehend the elements of a problem situation and potential solutions?" An adult chimpanzee (Sarah) was shown 30-second videotapes of a human actor struggling with one of several problems (for example, not able to reach bananas hanging from the ceiling, a record player not playing). Then Sarah was shown two photographs, one that depicted a solution to the problem (like stepping onto a box, plugging in the record player) and one that did not. She was then instructed to pick one of the photos and place it under the television monitor. (Sarah had been raised in captivity since age one and had extensive prior exposure to photographs and television.) The order in which the scenes were presented to Sarah was randomized, as was the left/right position of the photos presented to her. Sarah was shown eight different scenarios. For each scenario, researchers recorded whether Sarah selected the…arrow_forwardWith explanation don't copy from the internet.arrow_forwardWhy matter important among living systems? Explain your answer.arrow_forward
- Suppose that the gene for a protein 500 amino acids in length undergoes a mutation. If the mutation causes the synthesis of a mutant protein in which just one of the 500 amino acids is incorrect, the protein may lose its biological function. How can a small change in a protein's sequence inactivate the protein? The catalytic site of the protein may be malformed, preventing complementary fit. RNA may not recognize the altered DNA sequence, and bases may pair incorrectly. It may alter the shape of the protein's molecular chaperone, preventing proper protein folding. The active site may base pair incorrectly with the complementary DNA strand. The resulting protein may fold incorrectly and may not attain its native conformation.arrow_forwardThe miller urey experiment provided an idea for what?arrow_forwardThe ratio of _____ in DNA is 1:1 A) guanine to adenine B) adenine to thymine C) cytosine to adenine D) uracil to cytosinearrow_forward
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