During the first 600 million years of Earth history, enzymes, ATP , and other molecules could have assembled spontaneously at the same locations. Which probable stage of physical and chemical evolution of life is that?
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A: Introduction There are several hypotheses presents on that how life starts on the primitive earth.…
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A: Null hypothesis is a statement which is based upon certain observations and facts.
Q: How did life first begin on Earth?
A: The Earth was created about 4.5 billion years ago. Scientists and researchers believe that the…
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A: Eon is geologic time and it is such a long time that cannot measure. Firstly, the origin of the…
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Q: Chronologically arrange the evolutionary events with 1 being the earliest and 6 the most recent.…
A: Chronological event describe the timing of event as it occurred in the event of time period.…
Q: In the 1950s, scientists Miller and Urey conducted a classic experiment in which water, methane,…
A: Evolution is the study of origin of earth, origin of life on earth and relationship between…
Q: Which of the following events occurred first in eukaryotic evolution? a. Endosymbiosis and…
A: Answer is c.) compartmentalization and formation of nucleus.
Q: Direct evidence of life on early Earth comes from fossils of microorganisms that lived 3.5 billion…
A: The earliest life structures we are aware of were minuscule organic entities (microorganisms) that…
Q: No one knows exactly when or how the first living organisms evolved, but we know that life existed…
A: Just as the universe is believed to have been formed due to the occurrence of the 'Big Bang', the…
Q: Which of the following eras in Earth's history is the longest? Precambrian Cenozoic Paleozoic…
A: A geological era divides eon into smaller unit of time. Geological era are further divided into…
Q: Without an oxygen-free atmosphere, the organic compounds that started the story of life never would…
A: The Earth has been significantly altered by life. Organisms have influenced the composition of the…
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: Simple systems (of this type) of RNA , enzymes, and coenzymes have been created in the laboratory.…
A: Chemical evolution refers to changes in entities that do not have to be able to reproduce…
Q: One of the prerequisites for chemical evolution on early Earth is that there was an adequate amount…
A: on the early earth, there had much time to generate a suitable condition which may lead to the…
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: On the geologic time scale, life originated in the_____ . a. Archean c. Phanerozoic b. Proterozoic…
A: The geologic time scale is a chronological dating system that classifies geological strata into…
Q: The current geological era is the ________. Question 32 options: Cambrian Paleozoic…
A:
Q: Four billion years ago, the Earth was a thin-crusted inferno. Which probable stage of physical and…
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A: Option a is correct Land and air were inhospitable places for life during the archean eon.
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A: The major evolution evens since the origin of the earth have been categorized into three major eras.
Q: What was the Earth like million of years ago?
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Q: Why was the development of enzymes fundamental to the evolution of life?
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Q: Which of the following is not thought to have been a source of organic molecules on early Earth?* O…
A: Cosmic dust
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A: Constant change has characterized earth since its beginning some 4.5 billion years ago. life…
Q: Which of the following is the most probable order of appearance of molecules the evolution of life…
A: According to guidelines we have to answer the first question only. so please kindly post the…
Q: A. What is the PROTEROZOIC LIFE? B. Discuss the Great Oxygenation Event. C. Discuss the CAMBRIAN…
A: Geological time scale is a evolutionary event which determines how the life appear , its…
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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: Imagine an ancient sunlit estuary rich in clay deposits. Countless aggregations of organic molecules…
A: Several hypotheses have been made in relation to life's origins on Earth. In 1936, Alexander Oparin…
Q: a) With the above scenario in mind, discuss the significance (to life on earth) of the original…
A: a) Photosynthesis is the process in which green plants utilize water and carbon dioxide to generate…
Q: The evolution of eukaryotes was most directly enabled by which of the following? a. Diversification…
A: According to guidelines we have to answer the first question only. so please kindly post the…
Q: Why did the evolution of multicellular organisms such as plants and animals have to be preceded by…
A: evolution is a process or a theory that describes how the organisms developed from simple organic…
Q: Which eon has more events occurring in it? During which eon did life evolve? What is the difference…
A: Evolution refers to the gradual changes in an organism over a given period of time. These changes…
Q: Arrange these events in order of occurrence, with 1 being the earliest and 6 the most recent. First…
A: From the time earth came into existence, till now, our planet has gone through several changes.…
Q: What is the name of the evolution where carbon, oxygen, nitrogen were formed?
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Q: Place the following events in the order in which they are thought to have occurred in early…
A: Evolution is a continuous process and we are still evolving. Evolution is nothing but adapting to…
Q: With the above scenario in mind, discuss the significance (to life on earth) of the original…
A: Photosynthetic bacteria are the group of bacteria that uses the photosynthesis process to generate…
Q: If living cells were produced in a test tube from nonbiological components by chemical processes,…
A: The first cells that appeared on the earth are believed to be prokaryotic heterotrophic and are…
Q: Describe in general terms how the appearance of molecular oxygen in Earth’s atmosphere about 3…
A: The earth was created almost 4.5 billion years ago. The evidence suggests that the planet was devoid…
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- Without an oxygen-free atmosphere, the organic compounds that started the story of life never would have been formed on their own. Free oxygen would have attacked them. Which probable stage of physical and chemical evolution of life is that?For how long has there been life on Earth? For what percentage of time has life existed on Earth? For about how many years of geological time have human existed on earth?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?
- Which molecule is believed to have preceded the other two during the evolution of life? RNA Proteins DNAFour billion years ago, the Earth was a thin-crusted inferno. Which probable stage of physical and chemical evolution of life is that?Arrange these events in order of occurrence, with 1 being the earliest and 6 the most recent: ___1 a. Earths first seas form ___2 b. origin of mitochondria ___3 c. first protocells form ___4 d. Precambrian ends ___5 e. origin of chloroplasts ___6 f. first animals appear
- During what geologic period did life on Earth begin?During the Early _______________, life consisted of prokaryotic cells, but by the end of this geologic time span, multicellular eukaryotic organisms had evolved. (a) Cenozoic era (b) Paleozoic era (c) Mesozoic era (d) Archaean eon(e) Proterozoic eonWhich of the following questions about the origin of life on Earth is most scientifically testable? * Why were the earliest life-forms created using only twenty amino acids? Did life originate to make the universe a better place? Was catalytic RNA used by ancient organisms as a stepping stone to acquire protein enzymes? Can simple organic molecules form spontaneously in an oxygen-free atmosphere?
- Which molecule -DNA or RNA- do scientist believe was found in the first life form on Earth? Why do scientist believe this molecule was first to form life?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 CO2If living cells were produced in a test tube from nonbiological components by chemical processes, would this accomplishment prove that life evolved in asimilar manner billions of years ago? Explain your answer.