Q: A scientist discovers something new about the composition of the mantle. What type of rock (group)…
A: The mantle is the part of the earth between its crust and its core.
Q: How did discoveries in the deep sea influence scientists' ideas about whether life could be found…
A: A discussion of life elsewhere therefore naturally begins with a review of some key aspects of the…
Q: Which of these did Stanley Miller place in his experimental systemto show that organic molecules…
A: Answer- S.L. Miller experiment concluded the thoery of chemical evolution. He used all the inorganic…
Q: What evidence would you look for on one of these moons that would tell you that life may have…
A: The proof that we would look at Moon is about the indication for aspects of life.For example-…
Q: Whose discovery made the dating of ancient materials possible?
A: Radiocarbon dating works by comparing the three different isotopes of carbon. Isotopes of a…
Q: what was the first element formed in the universe
A: The Big Bang Theory is the leading explanation about how the universe began. It explains that the…
Q: What is the correct order of appearance in the fossil record, starting with the earliest: eukaryotic…
A: They consist of eubacteria and archaebacteria. Bacteria are simple prokaryotic organisms which are…
Q: Which of the following did Stanley miller place in the experimental system to show that organic…
A: Stanley Miller and Harold Urey's experiments reported evidence of chemical evolution or Chemogeny.…
Q: Before the emergence of life of what gases was the earth's primitive atmosphere constituted?
A: the primitive atmosphere was reducing in nature it had little or no oxygen it was rich in water…
Q: How did the origin of photosynthesis affect subsequentevolution of life on Earth?
A: Evolution is a series of events through which new biological species develop over time from…
Q: During what geologic period did life on Earth begin?
A: Evolution is the process of gradual changes occurring in the species over a period of time, when the…
Q: How did the Paleozoic era end?
A: Paleozoic era is the earliest era that has occurred in the Phanerozoic eon. It is the largest of all…
Q: Describe how scientists have tested the hypothesis that simpleorganic molecules could have formed on…
A: There are fossils that were discovered from Western Australia 3.5 million years ago (mya). This…
Q: How does the fact that Earth is a sphere tilted on its axis influence thedistribution of life?
A: Earth is so far the only planet that has the capability to sustain life on it. There are many…
Q: With regard to the origin of life, why are biologistsinterested in the prebiotic synthesis of…
A: Introduction The Oparin-Haldane model suggested that under the highly reducing atmosphere of…
Q: How would the appearance of protocells have represented a key step in the origin of life?
A: Introduction Origin of life on earth can be traced back to 3.4 billion years ago and as we now know…
Q: What evidence would you look for on Enceladus, Europa or Mars that would tell you that life may have…
A: Europa is the smallest of four Galilean moons orbiting Jupiter. Enceladus is the sixth-largest moon…
Q: How were biomolecules likely to have formed on the early Earth?
A: The fundamental biochemical similarities that were observed in living organisms have developed…
Q: What was the composition of the earth’s atmosphere at the time of the origin of life, and how did it…
A: Earth was originally in the molten lava state mainly consists of hydrogen sulfide and other…
Q: What is the most accepted hypothesis on the origin of life on earth? How does it compare to the…
A: Introduction The heterotrophic hypothesis on the origin of life is the most compelling and widely…
Q: Describe the conditions that scientists think existed on early Earth.
A: Introduction The origin of life on earth can be traced back to 3.4 billion years ago and as we now…
Q: What was the Earth like million of years ago?
A: Millions of years ago, there is no life on the Earth. The temperature of the Earth was scorching,…
Q: How does the structure of a DNA molecule help account for the great variety of life that exists on…
A: DNA is the specific and dominant building block of the entire living organisms. They provide almost…
Q: Why are scientists interested in the primordial synthesis of organic molecules when it comes to the…
A: Introduction: The Oparin-Haldane hypothesis proposed that inorganic molecules in the atmosphere of…
Q: HOW OLD IS EARTH? HOW LONG DID THE LONGEST EON (SO FAR) LAST?
A: Different planets have different atmosphere.
Q: what element rise that caused the diversification event in evolution of earth
A: Introduction : The rise in oxygen, which is termed the Great Oxygenation Event is an important event…
Q: an abundance of ______________ in earth's early atmosphere would have interfered with assembly of…
A: Organic molecules are molecules found in all the living organisms. These molecules are formed by a…
Q: How do metamorphic rocks form
A: The process of change in form i.e. from a type to another type occurs leads to the formation of…
Q: Describe the roles that montmorillonite clay and vesicles may haveplayed in the origin of life.
A: The origin of life (OoL) on Earth is a natural mechanism. Life conquered the Earth about 3.7 billion…
Q: What was the most significant contribution of early photosynthetic organisms to Earth’s environment?
A: Photosynthesis is preparation of food by the use of light and carbon-dioxide gas.
Q: What's the earth crust?
A: Earth is a planet that is made up of the lithosphere, hydrosphere, and atmosphere. All of these…
Q: What provided energy for a biotic synthesis on primitive earth?
A: Primitive earth or early earth is referred to as the Earth during an initial one billion year of…
Q: How would you describe earth of millions year ago
A: It is believed that our planet Earth is about 4.54 billion years old. About 3.5 billion years ago…
Q: What were the consequences of an “oxygenated” Earth to life and to the atmosphere itself? (explain)
A: About 2.4 - 2.0 billion years ago, during the paleoproterozoic era, there was a time phase when the…
Q: How have changes in earths systems contributed to the evolution of life?
A: Earth and its environment are persistently modified. Plate tectonics move the landmasses, raise…
Q: Could the First Biological Molecules Have Formed NearVolcanoes on Early Earth?
A: In 1953, Stanley Miller conducted an experiment in the laboratory of Harold Urey to understand the…
Q: Can organic molecules form under conditionsestimated to simulate those on the early Earth?
A: Organic molecules are those composed of carbon atoms in the ring to which other atoms like hydrogen,…
Q: Which event in Earth’s historyeventually lead to the evolution of multicellular lifeforms?
A: The process of evolution of multicellular life from simpler, unicellular microbes was an important…
Q: A. How old is the Earth? B. How long did the longest eon (so far) last? C. How many years ago did…
A: Epoch is longer than era. Eon is the longest period of geological time.
Q: Name three different sources of energy that could have powered reactions on early earth to form…
A: The origin of simple organic compounds or monomers took place by the gases present in the primitive…
Q: When scientists try to assess the habitability of Mars, what is their guiding principle, based on…
A: Introduction Life:- It is defined as any system capable of performing functions such as breathing,…
Q: How are the different periods in the history of the earths broken up?
A: Evolutionary biology is the branch of biology that deals with the study of evolution or orderly…
Q: How do sedimentary rocks form?
A: There are three major rock types including igneous, metamorphic, and sedimentary rocks. Among these,…
Q: How do we know when oceans were first present on Earth?Why is the presence of oceans significant to…
A: The water body, which consists of hydrosphere of different planets, is called oceans. The 71%…
Q: What type of plates that float on top of the mantle do scientist believe that the Earth's crust is…
A: The earth is made up of different layers: 1)The Inner core- It is the inner and hottest layer of the…
Which scientists investigated the origins of organic molecules on the primordial Earth?
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- Charles Lyell's contribution to evolution is the idea that: O the earth is more than 6,000 years old O species evolve O natural selection is the mechanism of evolution there will always be a shortage of resourcesThere was a series of important experiments that were meant to recreate the conditions of Earth when life originated. What were these experiments named? O Miller-Urey experiments Stern-Gerlach experiments Sagan-Newton experiments Darwin-Gould experiments Michaelson-Morley experiments OOOO0What is Abiogenesis? Make a comprehensive essay about the theories on the Origin of Life: Abiogenesis.
- In their laboratory experiments of simulations of early Earth, Miller and Urey observed the abiotic synthesis of abundant amounts of DNA amino acids liposomes genetic systems Which of the following was probably NOT present in the primitive Earth s atmosphere (when life first appeared)? O2 NH3 H2O CH4 CO2How does evolution lead to both the diversity and the unity of life?How do organisms evolve? Explain clear
- 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.Figure 1.18 In the example below, the scientific method is used to solve an everyday problem. Which part in the example below is the hypothesis? Which is the prediction? Based on the results of the experiment, is the hypothesis supported? If it is not supported, propose some alternative hypotheses. 1. My toaster doesn’t toast my bread. 2. Why doesn’t my toaster work? 3. There is something wrong with the electrical outlet. 4. If something is wrong with the outlet, my coffeemaker also won’t work when plugged into it. 5. I plug my coffeemaker into the outlet. 6. My coffeemaker works.What Have I Learned So Far? Write True if the statement is true. If false, change the underlined word or phrase to make the statement true. 1. Charles Darwin coined the term “survival of the fittest." Fossils can be used in determining the remains of ancient organisms. 2. 3. Geology is the study of the distribution of plants and animals on Earth. 4. Lamarck proposed the theory of use and disuse. 5. Genetic mutation accounts for evidence of evolution. 6. The theory of acquired characteristics is the concept of Wallace. 7. Vestigial organs are structures that have a particular use before but have no particular purpose for existing animals. 8. The similarities of the embryos of vertebrates indicate a common ancestral domain among them. Biochemical evidence does not provide a solid proof of evolution. 9. 10. Anatomy of animals can be used as evidence of evolution Biodiversity and Systematics: Evolutionary Relationships 179
- The idea of the great chain of being, or scala naturae suggests that O a. all non-living and living things on earth can be arranged naturally on a branching tree O b. the earth is very young, and newly created c. new life forms appear periodicly through a process of spontaneous generation O d. all life forms can be arrayed along a linear progression of increasing reasoning ability O e. the natural world is made up of a set of unchanging essences that are discretely different from one anotherWhat is the origin of life or the main ancestor of all organismsWrite comprehensively your answer about why would understanding the origins of life on earth help with discovering life on other planets?
