Multiple Choice
Which of the following is NOT evidence for the endosymbiotic origins of mitochondria and chloroplasts?
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5. Cell Components
Endosymbiotic Theory
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Which of the following is not evidence for the endosymbiotic theory?
A
Mitochondria and chloroplasts have double membranes
B
Mitochondria and chloroplasts can survive independently outside the cell
C
Mitochondria and chloroplasts are similar in size to prokaryotes
D
Mitochondria and chloroplasts have their own DNA
Verified step by step guidance1
Understand the endosymbiotic theory: It suggests that mitochondria and chloroplasts originated from free-living prokaryotes that were engulfed by ancestral eukaryotic cells.
Identify key evidence supporting the theory: Mitochondria and chloroplasts have double membranes, which is consistent with the engulfing process.
Consider the size similarity: Mitochondria and chloroplasts are similar in size to prokaryotes, supporting the idea that they were once independent prokaryotic cells.
Examine the presence of DNA: Mitochondria and chloroplasts have their own DNA, which is similar to bacterial DNA, indicating a prokaryotic origin.
Evaluate the statement about independence: The claim that mitochondria and chloroplasts can survive independently outside the cell is incorrect, as they rely on the host cell for survival, making this statement not evidence for the endosymbiotic theory.
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