Classification of Organisms and Cells
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Questions and Answers

Which concept is best illustrated by the diagram of a single-celled organism?

  • Single-celled organisms carry out life functions that are essential for survival. (correct)
  • The life functions performed by a single-celled organism are different from the life functions performed by complex organisms.
  • Single-celled organisms contain one organelle that performs all the life functions.
  • Since single-celled organisms lack organs, they can survive only in moist environments.

    • Bacteria and humans are similar in that they both:

  • are single-celled
  • contain genetic material (correct)
  • lack cell organelles
  • carry out autotrophic nutrition

    • Which statement concerning organism A and organism B is correct?

  • Organism A and organism B both have structures that perform life processes. (correct)
  • Organism A and organism B have the same organ systems.
  • Organism A contains organs, whereas organism B lacks organs.
  • Organism A lacks structures that help maintain dynamic equilibrium.

    • Which of the following pairs of species are most distantly related?

    <p>Dog and bacteria</p> Signup and view all the answers

    Which two organisms are the most closely related?

    <p>B and C</p> Signup and view all the answers

    Which letter or letters represent an animal that could be a coelenterate?

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

    Which scientist is correctly paired with his contribution to biological science?

    <p>Linnaeus - devised a binomial system for naming organisms</p> Signup and view all the answers

    In the binomial system of nomenclature, which two classification groups provide the scientific name of an organism?

    <p>genus and species</p> Signup and view all the answers

    Which organism in the chart is most distantly related to the other organisms?

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

    Study Notes

    Classification of Organisms

    • Single-celled organisms perform essential life functions necessary for survival.
    • The life functions of single-celled organisms differ from those of complex multicellular organisms.
    • Single-celled organisms, despite lacking complex organs, can thrive in moist environments.

    Similarities Between Organisms

    • Both bacteria and humans are characterized by the presence of genetic material.
    • Not all bacteria are single-celled; humans are multicellular and do not lack cell organelles.

    Organism Structures and Life Processes

    • Organism A (single-celled) and Organism B (multicellular) both possess structures necessary for carrying out life processes.
    • Organism A does not contain organs, but both organisms have mechanisms that support life functions.

    Relational Distance Among Species

    • The dog and bacteria represent the most distantly related pairs of species in a given comparison.
    • Closer relationships are observed among species like humans and dogs or giraffes and squirrels.
    • Based on a classification chart, organisms B (Felis domestica) and C (Canis lupus familiaris) are the most closely related.
    • Organisms A (Musca), B (Canis), and C (Felis) belong to the Animalia kingdom but differ in specific classification features.

    Coelenterates in the Animal Kingdom

    • Animal B, characterized by a saclike cavity, may represent a coelenterate as it possesses both intracellular and extracellular methods of digestion.
    • Organism classifications can vary according to their digestive structures and methods.

    Contributions to Biological Science

    • Carl Linnaeus is known for creating the binomial system of nomenclature to name organisms.
    • Other notable scientists are incorrectly paired with unrelated contributions, such as Darwin and the invention of the electron microscope.

    Binomial Nomenclature

    • The binomial system for naming organisms uses the genus and species classification groups.
    • This system provides a unique scientific name that identifies an organism’s specific classification.
    • In a classification chart, the plant organism (Organism A) is the most distantly related compared to other animal organisms (B, C, D).
    • The classification reveals clear distinctions among kingdoms, highlighting the diversity of life forms.

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    Description

    Explore the fascinating world of living organisms through this quiz focused on classification and cellular functions. Test your understanding of how single-celled organisms carry out essential life functions compared to more complex organisms. This quiz is designed for students studying biology.

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