Eukaryotes + Prokaryotes + Endosymbiotic Theory

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What are eukaryotic cells?

Back

Eukaryotic cells are complex cells that contain membrane-bound organelles, including a nucleus that houses their DNA. Examples include plant and animal cells.

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What are prokaryotic cells?

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Prokaryotic cells are simpler cells that do not have membrane-bound organelles or a nucleus. Their DNA is located in a region called the nucleoid. Examples include bacteria and archaea.

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What is the Endosymbiotic Theory?

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The Endosymbiotic Theory proposes that eukaryotic cells originated from a symbiotic relationship between different species of prokaryotes, where one cell engulfed another.

Front

What organelles are believed to have originated from free-living prokaryotes?

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Mitochondria and chloroplasts are believed to have originated from free-living prokaryotes that were engulfed by ancestral eukaryotic cells.

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Do prokaryotic cells contain membrane-bound organelles?

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No, prokaryotic cells do not contain membrane-bound organelles.

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What is the primary function of mitochondria?

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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 primary function of chloroplasts?

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Chloroplasts are responsible for photosynthesis, converting light energy into chemical energy in the form of glucose.

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How do mitochondria and chloroplasts differ from other organelles?

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Mitochondria and chloroplasts have their own DNA and can replicate independently, unlike other organelles.

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What evidence supports the Endosymbiotic Theory?

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Evidence includes the presence of double membranes, their own circular DNA, and similarities between mitochondrial/chloroplast DNA and bacterial DNA.

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What is a key characteristic of prokaryotic cells?

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A key characteristic of prokaryotic cells is that they lack a true nucleus and membrane-bound organelles.