Multiple Choice
Which of the following are mitochondria thought to have evolved from according to the endosymbiotic theory?
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5. Cell Components
Endosymbiotic Theory
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Which statement best describes the possible origins of cell organelles in eukaryotes according to the endosymbiotic theory?
A
Eukaryotic organelles were formed from the fusion of multiple eukaryotic cells.
B
Eukaryotic organelles originated from the spontaneous generation of complex molecules.
C
Eukaryotic organelles originated from the engulfment of prokaryotic cells by ancestral eukaryotic cells.
D
Eukaryotic organelles evolved independently from prokaryotic cells without any interaction.
Verified step by step guidance1
Understand the endosymbiotic theory: This theory suggests that certain organelles in eukaryotic cells, such as mitochondria and chloroplasts, originated from free-living prokaryotic cells that were engulfed by ancestral eukaryotic cells.
Identify the key components of the theory: The theory is based on the idea of symbiosis, where one organism lives inside another, and both benefit from the relationship.
Consider the evidence supporting the theory: Mitochondria and chloroplasts have their own DNA, which is similar to bacterial DNA, and they replicate independently of the cell, supporting the idea that they were once free-living prokaryotes.
Evaluate the given statements: Compare each statement to the principles of the endosymbiotic theory. The correct statement should align with the idea of prokaryotic cells being engulfed by ancestral eukaryotic cells.
Select the statement that best matches the theory: The statement 'Eukaryotic organelles originated from the engulfment of prokaryotic cells by ancestral eukaryotic cells' aligns with the endosymbiotic theory.
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