Exploring Endosymbiotic Theory Concepts

Which of the following organelles is believed to have originated from an ancient symbiotic relationship between a primitive eukaryotic cell and a prokaryotic cell?

• Ribosome

• Mitochondria

• Golgi apparatus

• Endoplasmic reticulum

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DOK Level 2: Skill/Concept

What is one piece of evidence that supports the endosymbiotic theory regarding mitochondria and chloroplasts?

• They have their own DNA, which is similar to bacterial DNA.

• They are surrounded by a single membrane.

• They can survive independently outside the cell.

• They are found in all prokaryotic cells.

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DOK Level 2: Skill/Concept

How does the endosymbiotic theory explain the evolution of eukaryotic cells?

• Eukaryotic cells evolved from a single prokaryotic ancestor without any symbiotic relationships.

• Eukaryotic cells evolved through a series of mutations in prokaryotic cells.

• Eukaryotic cells evolved from a symbiotic relationship between different prokaryotic cells, leading to the incorporation of mitochondria and chloroplasts.

• Eukaryotic cells evolved from the fusion of multiple eukaryotic cells.

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DOK Level 2: Skill/Concept

Which genetic similarity between mitochondria and bacteria supports the endosymbiotic theory?

• Both have linear DNA.

• Both have circular DNA.

• Both have DNA enclosed within a nucleus.

• Both have DNA that is identical to eukaryotic nuclear DNA.

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DOK Level 2: Skill/Concept

What is a key difference between mitochondria and chloroplasts that reflects their distinct evolutionary origins?

• Mitochondria are involved in photosynthesis, while chloroplasts are involved in cellular respiration.

• Mitochondria are found only in plant cells, while chloroplasts are found in both plant and animal cells.

• Mitochondria are involved in cellular respiration, while chloroplasts are involved in photosynthesis.

• Mitochondria and chloroplasts have identical functions in all eukaryotic cells.

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DOK Level 2: Skill/Concept