Prokaryotes vs Eukaryotes and Protists
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Questions and Answers

What characteristic distinguishes protists from bacteria?

  • They lack membrane-bound organelles.
  • They are primarily heterotrophic.
  • They have a nucleus. (correct)
  • They are multicellular organisms.

    • Which of the following correctly describes protozoans?

  • They are all capable of photosynthesis.
  • They belong to the kingdom Plantae.
  • They are primarily autotrophic organisms.
  • They are unicellular and exist as heterotrophs. (correct)

    • What method do zooflagellates use for movement?

  • Spreading cytoplasm.
  • Releasing spores.
  • Utilizing flagella. (correct)
  • Using cilia.

    • Which example represents a sporozoan?

    <p><em>Plasmodium</em></p> Signup and view all the answers

    Which of the following protozoans is known for using a pseudopod for movement?

    <p><em>Amoeba</em></p> Signup and view all the answers

    How do sporozoans reproduce?

    <p>Both sexually and asexually.</p> Signup and view all the answers

    What is the primary feeding mode of heterotrophic protists?

    <p>Consuming other organisms.</p> Signup and view all the answers

    Which characteristic is typical of ciliates?

    <p>They have cilia covering their bodies.</p> Signup and view all the answers

    Which protist is primarily known for helping digest cellulose in wood?

    <p><em>Trichmympha</em></p> Signup and view all the answers

    What type of organism is classified as fungus-like among protists?

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

    Which of these statements correctly describes the characteristics of protists?

    <p>They are mostly unicellular and eukaryotic.</p> Signup and view all the answers

    Which supergroup of protists primarily consists of heterotrophic organisms?

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

    What distinguishes sarcodinians from other protozoans?

    <p>They use pseudopods to move.</p> Signup and view all the answers

    Which of the following protozoans is known for having flagella?

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

    What is a key characteristic of sporozoans?

    <p>They form spores and are parasitic.</p> Signup and view all the answers

    Which of the following lacks means of locomotion?

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

    What kind of protists are classified as autotrophs?

    <p>Plant-like protists</p> Signup and view all the answers

    What is the primary function of cilia in ciliaphorans?

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

    Which statement is true regarding zooflagellates?

    <p>They propel themselves using flagella.</p> Signup and view all the answers

    Which of the following is a characteristic shared by all protozoans?

    <p>They possess a nucleus.</p> Signup and view all the answers

    Study Notes

    Prokaryotes and Eukaryotes

    • Prokaryotes lack a nucleus and membrane-bound organelles.
    • Eukaryotes possess a nucleus.

    Protists

    • Most are unicellular.
    • All are classified as eukaryotes.
    • Divided into 4 supergroups.

    Protist Nutrition

    • Heterotrophs: animal-like.
    • Autotrophs: plant-like.
    • Decomposers: fungus-like.

    Protozoans (Animal-like Protists)

    • Unicellular
    • Eukaryotic
    • Heterotrophic
    • Capable of movement.

    Sarcodines

    • Move using cytoplasmic extensions called pseudopods.
    • Example: Amoeba.

    Zooflagellates

    • Possess whip-like structures called flagella for movement.
    • Example: Trichonympha (digests cellulose in termites).
    • Example: Trypanosoma (transmitted by tsetse flies and causes African Sleeping Sickness).

    Ciliates

    • Largest group of protozoans.
    • Covered in tiny hair-like projections called cilia.
    • Example: Paramecium.

    Sporozoans

    • Non-motile.
    • Parasitic.
    • Reproduce both sexually and asexually.
    • Example: Plasmodium (causes malaria).
    • Sporozoites (immature sporozoans) are transmitted through fluids.

    Prokaryotes vs Eukaryotes

    • Prokaryotes are single-celled organisms that lack a nucleus and other membrane-bound organelles.
    • Eukaryotes are organisms whose cells have a nucleus and other membrane-bound organelles.

    Protists

    • Mostly unicellular organisms
    • Eukaryotic
    • Classified into four "Supergroups"
    • Exist as heterotrophs, autotrophs, or decomposers.

    Protozoans (animal-like protists)

    • Unicellular, eukaryotic, and heterotrophic
    • Classified based on movement
    • Classified as Sarcodines, Zooflagellates, Ciliaphorans, and Sporozoans.

    Sarcodines

    • Move by extending cytoplasm (pseudopods)
    • Example: Amoeba

    Zooflagellates

    • Move using flagella (whip-like extensions)
    • Examples: Trichonympha (lives in termite guts) and Trypanosoma (causes African Sleeping Sickness, transmitted by tsetse fly)

    Ciliaphorans (Ciliates)

    • Largest group of protozoans
    • Covered with cilia (hair-like projections)
    • Example: Paramecium

    Sporozoans

    • Non-motile, spore-forming, parasitic protozoans
    • Can reproduce sexually and asexually
    • Live inside or on animals
    • Example: Plasmodium (causes malaria)
      • Immature sporozoans (sporozoites) are transmitted through fluids

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    Description

    Explore the fundamental differences between prokaryotes and eukaryotes in this quiz. Delve into the diverse world of protists, including their nutrition, classifications, and examples of various groups such as protozoans, sarcodines, and ciliates. Test your knowledge on their characteristics and functions.

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