Multiple Choice
Which of the following statements helps support the endosymbiotic theory?
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5. Cell Components
Endosymbiotic Theory
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Which type of cells combined to form the first eukaryotic cell according to the endosymbiotic theory?
A
Archaea and ribosomes
B
Eukaryotic cells and chloroplasts
C
Prokaryotic cells and mitochondria
D
Prokaryotic cells and archaea
Verified step by step guidance1
Understand the endosymbiotic theory: This theory suggests that eukaryotic cells originated through a symbiotic relationship between different prokaryotic cells.
Identify the key components involved: According to the theory, certain prokaryotic cells were engulfed by ancestral eukaryotic cells, leading to the formation of organelles like mitochondria and chloroplasts.
Focus on mitochondria: The theory posits that mitochondria originated from a type of prokaryotic cell, specifically a proteobacterium, which was engulfed by an ancestral eukaryotic cell.
Consider the role of archaea: Archaea are another type of prokaryotic cell that are believed to have contributed to the formation of the eukaryotic cell nucleus.
Combine the information: The endosymbiotic theory suggests that the first eukaryotic cells were formed through the combination of prokaryotic cells, including mitochondria, and possibly archaea, leading to the complex structure of modern eukaryotic cells.
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