Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Textbook Question
Chapter 21, Problem 15TYU
EVOLUTION LINK If living cells were produced in a test tube from nonbiological components by chemical processes, would this accomplishment prove that life evolved in a similar manner billions of years ago? Explain your answer.
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Direct evidence of life on early Earth comes from fossils of microorganisms that lived 3.5 billion years ago. But how did the first living cells appear?
The theory of evolution was controversial when it was first proposed in 1859, yet within 20 years virtually every working biologist had accepted evolution as the explanation for the diversity of life. Explain in at least 50 words why.
A)The Miller-Urey experiment in 1953 proved that
Group of answer choices
multicellular organisms can evolve from unicellular ones
living cells could arise from non-living substances
organic molecules important to living things could form from a "hot soup" of simple substances
conditions on early Earth were not as inhospitable as biologists of the time generally believed
a source of energy was not required in order for life to develop on Earth
Chapter 21 Solutions
Biology (MindTap Course List)
Ch. 21.1 - Describe the conditions that scientists think...Ch. 21.1 - Compare the prebiotic soup hypothesis with the...Ch. 21.1 - Prob. 1CCh. 21.1 - How does the ironsulfur world hypothesis differ...Ch. 21.2 - Outline the major steps hypothesized to have...Ch. 21.2 - Explain how the evolution of photosynthetic...Ch. 21.2 - Prob. 5LOCh. 21.2 - Prob. 1CCh. 21.2 - Prob. 2CCh. 21.2 - VISUALIZE Draw a simple sketch illustrating the...
Ch. 21.3 - Briefly describe the distinguishing organisms and...Ch. 21.3 - What is the correct order of appearance in the...Ch. 21.3 - Prob. 2CCh. 21.3 - What is the correct order of appearance in the...Ch. 21 - Energy, the absence of molecular oxygen, chemical...Ch. 21 - Prob. 2TYUCh. 21 - Prob. 3TYUCh. 21 - According to the hypothesis of serial...Ch. 21 - Prob. 5TYUCh. 21 - Prob. 6TYUCh. 21 - Prob. 7TYUCh. 21 - The time of greatest evolutionary diversification...Ch. 21 - Prob. 9TYUCh. 21 - The Age of Reptiles corresponds to the (a)...Ch. 21 - Evidence exists that a catastrophic collision...Ch. 21 - Flowering plants and mammals diversified and...Ch. 21 - Prob. 13TYUCh. 21 - EVOLUTION LINK If you were studying how...Ch. 21 - EVOLUTION LINK If living cells were produced in a...Ch. 21 - EVOLUTION LINK Why did the evolution of...Ch. 21 - INTERPRET DATA Evidence for the oldest...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following steps has not yet been accomplished byscientists studying the origin of life?(A) synthesis of small RNA polymers by ribozymes(B) formation of molecular aggregates with selectivelypermeable membranes(C) formation of protocells that use DNA to direct thepolymerization of amino acids(D) abiotic synthesis of organic moleculesarrow_forwardYou are studying the evolution of species. After performing DNA analysis, he discovers a gene that is conserved from yeast to humans. In which cellular processes is this gene most like to be involved? Could this gene have evolved to confer some of the complex traits that we observe in modern animals, like multicellularity? Briefly explain.arrow_forwardYou are discussing the choice of the “oil-eating” bacteria that you will use to clean the affected area from the oil spill and your team wants to know whether the Kalba sea constitutes a natural habitat for these bacteria. Formulate a hypothesis stating why or why not the Kalba sea area can be considered a natural habitat for such bacteria. Support your answer by discussing the role of evolution in contributing to the survival and thriving of “oil-eating” bacteria. Explain how and why these bacteria acquired these characteristicsarrow_forward
- One of the simplest definitions of a life-form is anything with the capacity to reproduce and regulate itself. Before life began, the complex organic, or hydrocarbon-bearing, molecules that makeup RNA and DNA, the building blocks of life, must have formed. No one knows exactly how life is formed from these molecules, but many ideas have been put forward. As you enter this area, go toward the large video screen on the right and explore the “Life at the hydrothermal Vents” label deck. Some scientists theorize that life begins at deep-sea vents. Find three lines of evidence to support this claim.arrow_forwardSimple systems (of this type) of RNA , enzymes, and coenzymes have been created in the laboratory. Which probable stage of physical and chemical evolution of life is that.arrow_forwardWhat are the implications of cellular and molecular biology for spontaneous generation and the hypothesis of evolution? Please answer in a simple way and don't need to be too long.arrow_forward
- You are examining an organism you believe to be an animal. Which of the following would NOT support your hypothesis? O A The organism appears to be heterotrophic. O B The organism appears to be multicellular. O C The organism appears to be motile. O D The organism appears to have cell walls. O E All animals, including sponges, have development directed by Hox genes.arrow_forwardWhy is evolution important in explaining the diversity of life? Explain the question briefly.arrow_forwardExplain why the answer is correct. For eukaryote cells to evolve into new types of eukaryotic organisms, which of the following would one expect to occur? The correct answer is E a) these cells have evolved because they have different DNA because of mutations b) Their endoplasmic reticulum is synthesizing new and/or different proteins. c) These specialized cells activate new genes to synthesize new proteins. d) these organisms have new characteristics because they have acquired new genes. e) all of these are truearrow_forward
- WRITE ABOUT A THEME: Organization You have seenmany examples of how form fits function at all levels of thebiological hierarchy. However, we can imagine forms thatwould function better than some forms actually found innature. For example, if the wings of a bird were not formedfrom its forelimbs, such a hypothetical bird could fly yet alsohold objects with its forelimbs. In a short essay (100–150words), use the concept of “evolution as tinkering” to explainwhy there are limits to the functionality of forms in nature.arrow_forwardMost likely the proto-cells were little more than membrane sacs protecting information-storing template and various metabolic agents from the environment. Which probable stage of physical and chemical evolution of life is that?arrow_forwardThe use of model organisms such as the mouse for research and biomedical testing of human diseases is based on the assumption that all organisms share a common ancestor. On what evidence is this assumption based?arrow_forward
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