Multiple Choice
According to the endosymbiotic theory, how did mitochondria become part of eukaryotic cells?
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5. Cell Components
Endosymbiotic Theory
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Which of the following statements is true of secondary endosymbiosis?
A
It results in the formation of mitochondria in eukaryotic cells.
B
It involves the engulfment of a eukaryotic cell by another eukaryotic cell.
C
It leads to the development of chloroplasts in prokaryotic cells.
D
It occurs when a prokaryotic cell engulfs another prokaryotic cell.
Verified step by step guidance1
Understand the concept of endosymbiosis: Endosymbiosis is a process where one organism lives inside another. In biology, it often refers to the theory that certain organelles in eukaryotic cells originated from free-living bacteria.
Differentiate between primary and secondary endosymbiosis: Primary endosymbiosis involves a eukaryotic cell engulfing a prokaryotic cell, leading to the formation of organelles like mitochondria and chloroplasts. Secondary endosymbiosis involves a eukaryotic cell engulfing another eukaryotic cell.
Analyze the statement about secondary endosymbiosis: Secondary endosymbiosis does not result in the formation of mitochondria, as mitochondria are believed to have originated from primary endosymbiosis.
Evaluate the statement regarding chloroplasts: Secondary endosymbiosis can lead to the development of chloroplasts, but not in prokaryotic cells. Chloroplasts are found in eukaryotic cells, and secondary endosymbiosis involves eukaryotic cells.
Identify the correct statement: The statement 'It involves the engulfment of a eukaryotic cell by another eukaryotic cell' accurately describes secondary endosymbiosis, as this process involves a eukaryotic host cell engulfing another eukaryotic cell.
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