Multiple Choice
What is the importance of the endosymbiotic theory in understanding the evolution of eukaryotic cells?
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5. Cell Components
Endosymbiotic Theory
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What is the endosymbiotic theory?
A
It is the theory that eukaryotic cells evolved from a single prokaryotic ancestor through gradual mutations.
B
It is the theory that eukaryotic cells originated through a symbiotic relationship between different species of prokaryotes.
C
It is the theory that all living organisms share a common ancestor.
D
It is the theory that mitochondria and chloroplasts are the result of viral infections in early eukaryotic cells.
Verified step by step guidance1
Understand the concept of the endosymbiotic theory: It proposes that eukaryotic cells originated through a symbiotic relationship between different species of prokaryotes.
Recognize that the theory suggests mitochondria and chloroplasts were once free-living prokaryotes that were engulfed by a host cell.
Identify the evidence supporting this theory, such as the fact that mitochondria and chloroplasts have their own DNA, which is similar to bacterial DNA.
Note that these organelles also replicate independently of the cell and have double membranes, consistent with the engulfing mechanism.
Understand that this theory explains the presence of these organelles in eukaryotic cells and their similarities to prokaryotic cells.
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