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?

Q: In which probable stage of physical and chemical evolution of life were gaseous oxygen and water…

A: Earth was formed some 4.6 billion years ago from the sun due to the continuous bombardment of huge…

Q: The period of the history of the earth that is referred to as Chemical Evolution was essential for…

A: Chemical evolution explains how life started on Earth. Chemical evolution refers to changes in…

Q: What is the most logical theory on the topic of the Origin of Life?

A: In the 1920s, English scientist John Burdon Sanderson Haldane and Russian scientist Aleksandr Oparin…

Q: Which molecule is believed to have preceded the other two during the evolution of life? RNA…

A: Introduction :- When an environmental shift makes new resources available or poses new environmental…

Q: How does evolution lead to both the diversity and the unity of life

A: Unity of life is states that all living organisms share basic fundamental characteristics and they…

Q: What is a domain ? What are the three domains of life on Earth? Explain briefly.

A: Domain is the highest taxonomic rank in the hierarchical biological classification system, above the…

Q: Are the three methods/hypotheses of producing the building blocks of life on earth mutually…

A: Introduction carbon is the building blocks life on earth.

Q: What is the origin of life or the main ancestor of all organisms

A: Origin of life is still one of the most complex topics to be explained and it encompasses all the…

Q: Which theory of the origin of life do you think is most possible? Why?

A: Earth's life began millions of years ago. There are numerous ideas about the origin of life,…

Q: Which of the following is the most likely organism to fossilize and be found in the fossil record?…

A: Step 1 Fossils are remains, tracks, impressions, or traces of organisms that existed in the past.…

Q: Which of the following events occurred first in eukaryotic evolution? a. Endosymbiosis and…

A: Answer is c.)  compartmentalization and formation of nucleus.

Q: When a human child goes through puberty, the organs associated with reproduction grow and become…

A: The human body is constantly growing or is repaired. Wear and tear of the body need repair while the…

Q: Which of the following pairs of taxa are most closely related?   A. Eubacteria and Archaea   B.…

A: Taxa are defined as the group or set of one or more population of a specific organism to form or…

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: Through which of the following sequences did chemical evolution MOST likely take place? Protobionts,…

A: According to Oparin, coacervate serves as a bridge between loose complex organic molecules and…

Q: Four billion years ago, the Earth was a thin-crusted inferno. Which probable stage of physical and…

A: Solar system was originated around 4.6 billion years ago from contraction of rotating gas and dust…

Q: ich of the following questions about the origin of life on Earth is most scientifically testable? *…

A: Different theories have been put forward to explain the origin of life on earth. Some of those…

Q: Which of the following is an accurate point that supports the idea that the earliest protocells…

A: DNA and RNA are the genetic material present in the cell.

Q: Why are homologous structures among organisms evidence for evolution?

A: There are pieces of evidence that prove the similarities and differences between the organisms of…

Q: Identify the stages of the origin of life hypothesis.

A: BASIC INFORMATION EVOLUTION The theory of evolution was first given by the Jean Baptist de Lamark.…

Q: What theory of the origin of life do you think is most possible? Why?

A: There are so many theories of the origin of life is available. First of all, we will know about the…

Q: What is the origin of life or the main ancestor of all organisms?”, what would be your answer and…

A: Answer: As the question depicts that it is the topic of EVOLUTION.  EVOLUTION: this is the process…

Q: Which of the following is true? A) Life originated around volcanic vents deep in the oceans. B)…

A: Abiogenesis is the theory that explains that life originated by the spontaneous process in hot…

Q: What is the difference between micro- and macroevolution? a. Microevolution describes the evolution…

A: MICRO EVLOUTION The change in allele frequency within the population. The mechanism involved in…

Q: Based on the Origin of Life by John H. McClendon, what are the implications of each theories?

A: Origin of life by John H.McClendon It explains the Origin of the atmosphere ocean, and earth crust…

Q: All the following statements support the theory that similar organisms have a common ancestor except…

A: Introduction The change in the heritable characteristics in a population over a period is termed…

Q: Which of the following steps has not yet been accomplished byscientists studying the origin of…

A: The earth is formed before 4.6 billion years ago from the sun with continuous bombardment of huge…

Q: Below are some key events that took place during the long history of life on Earth. Arrange them in…

A: Constant change has characterized earth since its beginning some 4.5 billion years ago. life…

Q: Scientists Stanley Miller and Harold Urey set up an experiment modeling the environmental conditions…

A: Conclusion from stanley Miller and Harold urey experiment is:- Life assembled from chemical building…

Q: Asian tiger mosquito  Trace its origin and evolutionary history or changes in the species. Describe…

A: Note- we are supposed to answer 3 subpart of a question according to our guidelines.  Please repost…

Q: True or false: The "Miller Urey" experiment that found heating and cooling gases such as H20 and CH4…

A: This research suggests that at least a few of the components of life may have developed abiotically…

Q: Which of the following is thought to be a necessary precursor for Eukaryotes to evolve?…

A: Introduction :-   Eukaryotes are organisms whose cells have membrane-bound organelles in addition to…

Q: does the process of evolution drives the diversity

A: The branch of biology which deals with the study of heredity and evolutions known as the genetics.…

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: Origin of Life List in a series of four or five steps the most likely scenario for the evolution of…

A: Evolution is a continuous process and we are still evolving. Evolution is nothing but adapting to…

Q: Which of the following occurred first in the history of life on earth? Colonization of land…

A: In the starting phase of formation of the earth, the planet was filled by reducing gases that did…

Q: What is an evolutionary tree? Is there a precise evolutionary tree that explains the emergence and…

A: The evolutionary tree is a visual and schematic depiction of evolutionary connections between living…

Q: and biological evolution.     Both chemical and biological evolution are defined by change over…

A: Yes, chemistry can give complex molecules of life. The best example is metabolism. For chemical…

Q: What is the name of the evolution where carbon, oxygen, nitrogen were formed?

A: Carbon, nitrogen and oxygen They are the three main basic components of life. Life is impossible…

Q: Based on the Origin of Life by John H. McClendon, which of theories is most plausible

A: Origin of Life, by John H. McClendon, is an informational book about the origin of life on Earth. It…

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: Put the following events in chronological order. First protocell forms First prokaryote First…

A: Origin of life on Earth still seems unsure. But different scientific theories about this are -…

Q: Why does icee float? Why is this "weird." What "should" happen when the temperature decreases? Why/…

A: To determine: how Ice float What happens if temperature decrease How floating helps aquatic…

Q: How is Aristotle’s “scale of nature” idea linked to early evolutionary thought? In what ways does it…

A: Evolutionary theory of biology states that organisms undergo a change in successive generations over…

Q: A pond starts to dry up, and the turtles living in the pond start migrating to a new pond. What…

A: Irritabilty is defined as ability of a living organism for changing environment conditions.

Q: Organisms keep on evolving including human beings, how do you picture out the world would be 50…

A: Studies have shown that people are advancing. Human advancement depends on the distinctions in our…

Q: Which sequence of events accurately describes the history of the planet (from oldest to youngest)?

A: The history of our planet, Earth, started with the formation of the solar system. The solar system…

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…

Abiogenesis