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Questions and Answers
What is the proposed origin of mitochondria and plastids?
What is the proposed origin of mitochondria and plastids?
- They evolved independently within the eukaryotic cells
- They were created through a process of cellular division within eukaryotic cells
- They originated from the endosymbiotic relationship between two eukaryotic cells
- They were formerly small prokaryotes living within larger host cells (correct)
What event is associated with the sudden appearance of fossils resembling modern animal phyla in the Cambrian period?
What event is associated with the sudden appearance of fossils resembling modern animal phyla in the Cambrian period?
- The Cambrian explosion (correct)
- The Colonization of Land
- The Oxygen Revolution
- The Extinction Event
What marks the most widespread and diverse land animals including arthropods and tetrapods?
What marks the most widespread and diverse land animals including arthropods and tetrapods?
- The Oxygen Revolution
- Extinction Event
- Colonization of Land (correct)
- The Cambrian explosion
When did the human lineage of tetrapods evolve?
When did the human lineage of tetrapods evolve?
What caused the extinction of many prokaryotic groups that could NOT adapt to increased atmospheric O2 levels?
What caused the extinction of many prokaryotic groups that could NOT adapt to increased atmospheric O2 levels?
What is a common characteristic shared by mitochondria and plastids as evidence of the endosymbiotic theory?
What is a common characteristic shared by mitochondria and plastids as evidence of the endosymbiotic theory?
What is the proposed age of the oldest fossils of eukaryotic cells?
What is the proposed age of the oldest fossils of eukaryotic cells?
What process caused the accumulation of oxygen in the atmosphere from about 2.7 to 2.4 billion years ago?
What process caused the accumulation of oxygen in the atmosphere from about 2.7 to 2.4 billion years ago?
What is the driving force behind the Cambrian explosion?
What is the driving force behind the Cambrian explosion?
What is the significance of the endosymbiont theory in the evolution of eukaryotic cells?
What is the significance of the endosymbiont theory in the evolution of eukaryotic cells?
What event can open habitats that may result in adaptive radiation?
What event can open habitats that may result in adaptive radiation?
Prokaryotes were Earth’s sole inhabitants for more than 1.5 billion years.
Prokaryotes were Earth’s sole inhabitants for more than 1.5 billion years.
The rise of oxygen in the atmosphere from about 2.7 to 2.4 billion years ago caused the 'oxygen revolution'.
The rise of oxygen in the atmosphere from about 2.7 to 2.4 billion years ago caused the 'oxygen revolution'.
The Cambrian explosion refers to the sudden appearance of fossils resembling modern plant phyla.
The Cambrian explosion refers to the sudden appearance of fossils resembling modern plant phyla.
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