Evolution of Life on Earth
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Questions and Answers

What is the approximate age of the beginning of life on Earth?

  • 4.5 billion years ago
  • 2.5 billion years ago
  • 3.8 billion years ago (correct)
  • 3.0 billion years ago

    • What is the primary characteristic that distinguishes multicellular organisms from unicellular organisms?

  • The ability to perform photosynthesis
  • The ability to move from one place to another
  • The presence of multiple cells with specialized functions (correct)
  • The presence of a cell nucleus

    • What is the term for organisms that obtain energy by consuming other organisms or organic matter?

  • Eukaryotic
  • Prokaryotic
  • Autotrophic
  • Heterotrophic (correct)

    • What is the approximate time period when the evolution of multicellular organisms occurred?

    <p>1.5-0.5 BYA</p> Signup and view all the answers

    What is the characteristic that is shared by all living things?

    <p>They are all composed of cells</p> Signup and view all the answers

    What is the term for the process by which cells become specialized to perform specific functions?

    <p>Cell differentiation</p> Signup and view all the answers

    What is the result of repeated cell divisions without cytoplasmic division?

    <p>A coenocytic cell with many nuclei</p> Signup and view all the answers

    Which characteristic of living organisms refers to the ability to react to environmental factors?

    <p>Irritability</p> Signup and view all the answers

    What is the term for the intracellular movement of protoplasm?

    <p>Cyclosis</p> Signup and view all the answers

    What is the result of cell nuclei division and cell cytoplasm division?

    <p>A multicellular organism with separate cells</p> Signup and view all the answers

    Which of the following is NOT a characteristic of living organisms?

    <p>Electromagnetism</p> Signup and view all the answers

    What is the term for the sum total of chemical reactions in an organism?

    <p>Metabolism</p> Signup and view all the answers

    What is the level of organization that consists of a group of similar cells that perform a specific function?

    <p>Tissue</p> Signup and view all the answers

    What is the principle that describes the relationship between the structure and function of an organism?

    <p>Form fits function</p> Signup and view all the answers

    What is the molecule that carries genetic information and is passed from parents to offspring?

    <p>DNA</p> Signup and view all the answers

    What is the level of organization that consists of several organs that work together to perform a specific function?

    <p>Organ system</p> Signup and view all the answers

    What is the phrase that describes the ability of organisms to reproduce their own kind?

    <p>Like begets like</p> Signup and view all the answers

    What is true about the environment and an organism?

    <p>An organism interacts with its surroundings</p> Signup and view all the answers

    What do plants obtain from their surroundings to make food?

    <p>Water, nutrients, carbon dioxide, and energy</p> Signup and view all the answers

    What is the result of plants releasing oxygen?

    <p>Other organisms use it for their own survival</p> Signup and view all the answers

    What is the primary source of energy in an ecosystem?

    <p>Sunlight</p> Signup and view all the answers

    What is the process by which organisms maintain a stable internal environment?

    <p>Homeostasis</p> Signup and view all the answers

    What is the outcome of a plant's roots breaking up rocks and releasing acids?

    <p>The soil becomes more acidic</p> Signup and view all the answers

    What is the brain's response when the body temperature varies slightly from 37°C?

    <p>It signals the skin to produce sweat</p> Signup and view all the answers

    What is the theory that proposes that life on Earth began from rocks and other debris from impacts?

    <p>Panspermia (Cosmozoic Theory)</p> Signup and view all the answers

    What is the hypothetical phase of the evolutionary history of life on Earth in which self-replicating RNA molecules proliferated?

    <p>RNA World</p> Signup and view all the answers

    What is the theory that proposes that life on Earth began due to lightning striking through rich volcanic clouds?

    <p>Electricity</p> Signup and view all the answers

    What is the theory that proposes that Earth's oceans were covered with ice, which may have protected the compounds, allowing them to interact and create life?

    <p>Beneath the Ice</p> Signup and view all the answers

    What is the theory that proposes that the primordial soup simply continued to react with itself over time, producing more and more complex molecules, yielding life?

    <p>Simple Metabolism and Reactions</p> Signup and view all the answers

    What contains vast and diverse ecosystems?

    <p>Submarine Hydrothermal Vents</p> Signup and view all the answers

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