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 (C)</p> Signup and view all the answers

Where do most members of the Archaeplastida supergroup store food?

<p>In the form of starch (D)</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 (C)</p> Signup and view all the answers

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

<p>Mitosis (A)</p> Signup and view all the answers

What is the defining feature of endosymbiosis?

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

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

<p>Mitochondrion (C)</p> Signup and view all the answers

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

<p>Prokaryote (B)</p> Signup and view all the answers

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

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

What is a unifying characteristic of eukaryotes?

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

Which theory explains the origin of mitochondria in eukaryotic cells?

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

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

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

Which Supergroup includes lineages like SARS?

<p>Archaeplastida (D)</p> Signup and view all the answers

What is a characteristic shared by all Eukaryotes?

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

What is the function of the alveolus in Alveolates?

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

Which Protists are further categorized under Alveolates?

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

What distinguishes dinoflagellates in terms of mobility?

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

What do many dinoflagellates have encasing their cells?

<p>Cellulose plates (A)</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 (B)</p> Signup and view all the answers

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

<p>SAR (C)</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 (B)</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 (A)</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 (A)</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 (C)</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 (C)</p> Signup and view all the answers

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

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

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