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Questions and Answers
What is the process by which an engulfed proteobacteria evolved into the organelle we call the mitochondrion?
Which organelle allows cells to undergo cellular respiration?
In the context of eukaryotic life, what does endosymbiosis primarily explain?
Which protist is known to cause severe diarrhea when ingested from freshwater streams?
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What has revealed that some protists are more closely related to multicellular groups than they are to each other?
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Why is the classification of protists likely to continue to be in flux?
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What type of flagella do chlorophytes like Chlamydomonas possess?
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What is a characteristic feature of Amoebozoans' pseudopodia?
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Which group of organisms exhibit a single apical flagellum surrounded by a contractile collar?
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In terms of size, how do red algae primarily exist?
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What is the primary habitat of chlorophytes like Volvox?
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What process is represented by the crisscrossing branches in the early evolution of the tree of life?
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What is the causative agent of African sleeping sickness?
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Which group of protists exhibit morphological diversity, can be photosynthetic, heterotrophic, or mixotrophic, and can generate bioluminescence?
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Which group of organisms have an apical complex specialized for entry and infection of host cells?
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During which time do the chloroplasts of Euglena temporarily cease functioning?
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Which group of protists are a component of plankton and can emit light when jarred or stressed?
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Which parasite is transmitted to another human or mammal when the infected tsetse fly consumes another blood meal?
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Study Notes
- Endosymbiosis is a significant process where a proteobacteria evolved into the organelle we call mitochondria, allowing cells to undergo cellular respiration for increased energy production.
- Genetic information has led to the reclassification of protists, revealing some are more closely related to multicellular groups than to each other, leading to ongoing changes in classification as new information arises.
- Protists are categorized into 4 supergroups: Excavata, Archaeplastida, Unikonta, and SAR clade, with examples like Giardia lamblia, red algae, amoebas, and Plasmodium.
- The SAR clade includes parasitic organisms like Plasmodium that causes malaria in humans, with complex life cycles involving multiple hosts and stages of reproduction.
- Different protists like Euglena and dinoflagellates exhibit unique characteristics such as mixotrophy, bioluminescence, and diverse morphologies, playing important roles in freshwater and marine habitats.
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Description
Learn about the characteristics and diversity of red algae (rhodophytes) and green algae (chlorophytes and charophytes) within the Archaeplastida group. Explore the range of forms, habitats, and features of these algae, from unicellular protists to large seaweeds.
