Endosymbiotic Theory and Life of a protein

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What is the Endosymbiotic Theory?

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The Endosymbiotic Theory proposes that certain organelles in eukaryotic cells, such as mitochondria and chloroplasts, originated from free-living prokaryotes that were engulfed by ancestral eukaryotic cells.

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What evidence supports the Endosymbiotic Theory?

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Evidence includes the presence of double membranes in mitochondria and chloroplasts, their own circular DNA similar to prokaryotes, and their ability to replicate independently of the cell.

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What are prokaryotes?

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Prokaryotes are unicellular organisms that lack a nucleus and membrane-bound organelles, and they are generally smaller and simpler than eukaryotic cells.

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What are eukaryotes?

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Eukaryotes are organisms whose cells contain a nucleus and membrane-bound organelles, and they can be unicellular or multicellular.

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What is the primary difference between prokaryotic and eukaryotic cells?

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The primary difference is that prokaryotic cells do not have a nucleus, while eukaryotic cells do.

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What organelles are known to have originated from endosymbiosis?

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Chloroplasts and mitochondria are organelles that are believed to have originated from endosymbiotic prokaryotes.

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Are prokaryotes unicellular or multicellular?

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Prokaryotes are unicellular organisms.

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What is the function of ribosomes on the Rough Endoplasmic Reticulum (Rough ER)?

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Ribosomes on the Rough ER synthesize proteins that are destined to be secreted from the cell or incorporated into the cell's membrane.

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What is the role of mitochondria in eukaryotic cells?

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Mitochondria are known as the powerhouse of the cell, as they generate ATP through cellular respiration.

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What is the role of chloroplasts in plant cells?

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Chloroplasts are responsible for photosynthesis, converting light energy into chemical energy stored in glucose.