Multiple Choice
What role does the mitochondria play in the process of photosynthesis?
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5. Cell Components
Mitochondria & Chloroplasts
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Why do organelles like mitochondria and chloroplasts have their own DNA?
A
They are involved in the synthesis of all cellular lipids.
B
They need to produce their own proteins independently of the cell nucleus.
C
They are remnants of ancient bacteria that were engulfed by ancestral eukaryotic cells.
D
They are the only organelles responsible for energy production in the cell.
Verified step by step guidance1
Understand the concept of endosymbiotic theory, which explains the origin of mitochondria and chloroplasts in eukaryotic cells.
Recognize that mitochondria and chloroplasts have their own DNA, which is similar to bacterial DNA, supporting the idea that they originated from free-living bacteria.
Learn that these organelles were engulfed by ancestral eukaryotic cells, forming a symbiotic relationship where the engulfed bacteria provided advantages such as energy production.
Note that the presence of their own DNA allows mitochondria and chloroplasts to produce some of their own proteins independently, although they still rely on the cell for most of their protein needs.
Understand that while mitochondria and chloroplasts are crucial for energy production, they are not the only organelles involved in this process, as other cellular components also contribute to energy metabolism.
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