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Questions and Answers
What is the main function of mitochondria in eukaryotic cells?
What is the main function of mitochondria in eukaryotic cells?
- To produce ATP (correct)
- To produce glucose
- To produce water
- To produce oxygen
How do proteins enter mitochondria?
How do proteins enter mitochondria?
- Through the nuclear membrane
- Through the plasma membrane
- Through translocator complexes (correct)
- Through the cytoplasm
How are matrix proteins transported across interacting outer and inner membrane translocators?
How are matrix proteins transported across interacting outer and inner membrane translocators?
- Directly (correct)
- Indirectly
- Through the plasma membrane
- Through the cytoplasm
What is the function of the four protein complexes found in cristae?
What is the function of the four protein complexes found in cristae?
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What is the proton motive force?
What is the proton motive force?
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What is the role of ATP synthase in the mitochondria?
What is the role of ATP synthase in the mitochondria?
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What is the function of the ATP/ADP carrier in the mitochondria?
What is the function of the ATP/ADP carrier in the mitochondria?
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Study Notes
- Mitochondria are organelles in eukaryotic cells that produce ATP.
- Proteins are transported into mitochondria through translocator complexes.
- Matrix proteins are directly transported across interacting outer and inner membrane translocators.
- Cristae contain four protein complexes that harvest electrons from carriers.
- Electron transport in Complexes II, III, and IV is coupled with proton pumping, creating an electrochemical gradient called the proton motive force.
- ATP synthase uses the proton motive force to synthesize ATP.
- ATP/ADP carrier is responsible for the coordinated import of ADP and export of ATP across the inner membrane.
- Mitochondria move alongside microtubules and can undergo dynamic changes in shape.
- Perturbations in mitochondrial behavior and membrane permeability are associated with programmed cell death.
- Mitochondria are distributed near sites of high demand for ATP and other metabolites.
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