FEU High School Earth and Life Science Module 8 - Lesson 8
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Questions and Answers

What is the Panspermia theory?

  • The theory that life originated from Earth and spread to other planets through meteors
  • The theory that life originated from amino acids present in the Earth's atmosphere and spread to other planets
  • The theory that life originated from amino acids present in meteors and only flourished on Earth (correct)
  • The theory that life originated from microorganisms on other planets and spread to Earth through meteors

    • What does Panspermia theory propose about the seed of life and its origin?

  • Present in the Earth's core and erupted onto the surface through volcanic activity
  • Originated from amino acids in the Earth's atmosphere and spread to other planets
  • Present in meteors in space and landed on different planets, but flourished only on Earth (correct)
  • Originated from microorganisms on Earth and spread to other planets through meteors

    • According to the Panspermia theory, why did life only flourish on Earth?

  • Because Earth contained a habitable environment and made life possible (correct)
  • As a result of volcanic activity on Earth's surface
  • Due to the abundance of water on Earth
  • Due to the presence of microorganisms on Earth

    • What is the significance of amino acids in the Panspermia theory?

    <p>They are the building blocks of proteins</p> Signup and view all the answers

    How does the Panspermia theory explain the origin of life on Earth?

    <p>Life originated from amino acids present in meteors which landed on Earth and flourished due to a habitable environment</p> Signup and view all the answers

    What role do proteins play according to the explanation of the Panspermia theory?

    <p>They play a major role in cell processes</p> Signup and view all the answers

    What does the Miller-Urey experiment suggest?

    <p>Organic compounds can be created from inorganic ones.</p> Signup and view all the answers

    Which theory on the origin of life states that life began as a series of chemical reactions of organic compounds?

    <p>Nonliving Matter Origin</p> Signup and view all the answers

    What was found in meteorites that supports the theory of the origin of life?

    <p>Amino acids</p> Signup and view all the answers

    What is the Divine Creation Theory based on?

    <p>The belief in supernatural creation</p> Signup and view all the answers

    What did the urea production in the Miller-Urey experiment suggest?

    <p>Organic compounds can be produced from inorganic gases.</p> Signup and view all the answers

    What is the most popular theory on the origin of life?

    <p>Divine Creation Theory</p> Signup and view all the answers

    What did the strains of bacteria surviving in space demonstrate?

    <p>Life can exist in extreme environments.</p> Signup and view all the answers

    What did the Book of Genesis describe about the creation of life?

    <p>'Six days of creation' leading to the creation of man.</p> Signup and view all the answers

    What did the vitalism concept propose?

    <p>'Forces governing life are distinct and independent from forces governing the physical sciences.'</p> Signup and view all the answers

    What was debunked by the Miller-Urey experiment?

    <p>The belief that organic compounds cannot be created from inorganic ones.</p> Signup and view all the answers

    Study Notes

    Panspermia Theory

    • Proposes that life exists throughout the universe and can be disseminated by asteroids, comets, and meteoroids.
    • Suggests that life, or the essential building blocks of life, originated from extraterrestrial sources and was carried to Earth.

    Seed of Life and Its Origin

    • Life's fundamental components, such as amino acids, could have originated in space and were transported to Earth.
    • Panspermia theorizes that Earth was hospitable for life when these components arrived, allowing for evolution.

    Flourishing of Life on Earth

    • Conditions on early Earth, such as abundant water and stable climates, created an ideal environment for life to flourish.
    • Variability in celestial bodies may not have provided the same conducive environment as Earth.

    Significance of Amino Acids

    • Amino acids are considered the building blocks of proteins and are essential for life.
    • Their presence in meteorites supports the idea that life’s precursors were distributed across space.

    Origin of Life Explanation

    • Panspermia suggests that life did not originate on Earth but was brought here from other parts of the universe.
    • The process of seeding life involves a combination of cosmic events and biological resilience.

    Role of Proteins

    • Proteins are critical for biological processes and structures; they are synthesized from amino acids.
    • The availability of organic molecules from space is seen as significant for the development of proteins necessary for life.

    Miller-Urey Experiment

    • This experiment simulated conditions of early Earth and successfully produced amino acids from inorganic compounds.
    • It demonstrated that organic compounds could be synthesized abiotically, hinting at possible pathways for life's origins.

    Chemical Reaction Theory

    • Proposes that life began through a series of chemical reactions involving organic compounds present on primordial Earth.
    • Emphasizes the necessity of environmental conditions conducive to complex chemistry.

    Meteorite Findings

    • Analysis of meteorites revealed organic compounds and amino acids, lending credence to the Panspermia theory.
    • These findings suggest that the building blocks of life could be prevalent throughout the cosmos.

    Divine Creation Theory

    • Based on religious texts, notably the Book of Genesis, this theory posits that a divine being created life independently and uniquely on Earth.

    Urea Production

    • The production of urea in the Miller-Urey experiment indicated the feasibility of forming complex organic molecules from simple precursors under plausible early Earth conditions.
    • Abiogenesis is often considered the most widely accepted theory, proposing that life arose from non-living matter through natural processes.

    Bacteria in Space

    • Strains of bacteria have shown that certain life forms can survive in the extreme conditions of space, reinforcing the idea that life is resilient and potentially widespread.

    Creation of Life in Genesis

    • The Book of Genesis describes a divine process for the creation of life, framing it within a theological context rather than a scientific one.

    Concept of Vitalism

    • Vitalism proposed that life is fundamentally different from non-living matter, originating from a vital force exclusive to living beings.
    • Dismissed by the evidence from the Miller-Urey experiment, which showed life-like compounds could arise from non-living materials.

    Debunking by Miller-Urey

    • The successful synthesis of organic compounds from inorganic substances in the Miller-Urey experiment challenged vitalism, demonstrating that life could arise from chemical processes without a special vital force.

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    Description

    Test your understanding of the origins and evolution of life, characteristics of life, and unifying themes in the study of life with this quiz based on AY 23-24 Lesson 8 of the Earth and Life Science Module 8.

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