Characteristics of Eukaryotes Quiz
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Questions and Answers

What is the primary function of cilia in ciliates?

  • Energy storage
  • Coordination of directed movements (correct)
  • Photosynthesis
  • Reproduction
  • Which characteristic is common among non-protists in the Archaeplastida supergroup?

  • Possession of chloroplasts
  • Presence of cell walls (correct)
  • Storage of food in the form of starch
  • Ability to photosynthesize
  • What distinguishes red algae within the Archaeplastida supergroup?

  • Multicellularity and size range (correct)
  • Primarily unicellular
  • Capable of photosynthesis
  • Cell wall composition
  • What is a notable feature of green algae based on the text?

    <p>Presence of both unicellular and multicellular organisms</p> Signup and view all the answers

    Where do most members of the Archaeplastida supergroup store food?

    <p>In the form of starch</p> Signup and view all the answers

    What is a characteristic shared by the last common ancestor to all Eukaryotes?

    <p>Chromosomes Organized by Histones</p> Signup and view all the answers

    What is a universal mode of cell division in all Eukaryotes?

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

    What is the defining feature of endosymbiosis?

    <p>Mutual benefit for both cells involved</p> Signup and view all the answers

    Which organelle is thought to have originated from endosymbiosis according to the endosymbiotic theory?

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

    If an organism lacks a nucleus but possesses flagella, it is likely to be a:

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

    Which feature differentiates Eukaryotes from Prokaryotes based on the given information?

    <p>Presence of histones</p> Signup and view all the answers

    What is a unifying characteristic of eukaryotes?

    <p>Cells with nuclei surrounded by a nuclear envelope</p> Signup and view all the answers

    Which theory explains the origin of mitochondria in eukaryotic cells?

    <p>Endosymbiotic theory</p> Signup and view all the answers

    What is one of the events that led to the evolution of eukaryotes?

    <p>Formation of chloroplasts</p> Signup and view all the answers

    Why does the diversity and evolutionary relationship between Protists lead to the creation of Eukaryotic 'Supergroups'?

    <p>To simplify classification</p> Signup and view all the answers

    Which Supergroup includes lineages like SARS?

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

    What is a characteristic shared by all Eukaryotes?

    <p>Cells with nuclei surrounded by a nuclear envelope</p> Signup and view all the answers

    What is the function of the alveolus in Alveolates?

    <p>Exact function is unknown</p> Signup and view all the answers

    Which Protists are further categorized under Alveolates?

    <p>Dinoflagellates, Apicomplexans, Ciliates</p> Signup and view all the answers

    What distinguishes dinoflagellates in terms of mobility?

    <p>Having two flagella</p> Signup and view all the answers

    What do many dinoflagellates have encasing their cells?

    <p>Cellulose plates</p> Signup and view all the answers

    Which group of single-cell protists are covered in rows, tufts, or spirals of tiny cilia?

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

    Which supergroup includes the lineages Stramenopiles, Alveolates, and Rhizarians?

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

    What environmental conditions characterized the period when life was anaerobic?

    <p>Low in Oxygen and high in Carbon Dioxide/Nitrogen</p> Signup and view all the answers

    How did the creation of an oxygen-rich environment by Cyanobacteria impact the evolution of eukaryotes?

    <p>It provided the conditions for the evolution of eukaryotes from prokaryotes</p> Signup and view all the answers

    Which step of the Endosymbiotic Theory involves an aerobic bacterium being engulfed by a proto-eukaryotic cell?

    <p>Step 3-4</p> Signup and view all the answers

    What evidence supports the relationship between mitochondria and Alpha-Proteobacteria?

    <p>Composition of mitochondrial inner membrane similar to Bacterial plasma membrane</p> Signup and view all the answers

    Which cellular components are closely related to Alpha-Proteobacteria based on the Endosymbiotic Theory?

    <p>Mitochondrial DNA, ribosomes, and tRNA</p> Signup and view all the answers

    How do mitochondria reproduce based on their similarity to bacterial fission?

    <p>Through binary fission</p> Signup and view all the answers

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