Endosymbiosis and Multicellularity Quiz

Which of the following best explains the theory of endosymbiosis?

• Prokaryotic cells evolved directly into eukaryotic cells independently.

• Eukaryotic cells are formed by the fusion of two prokaryotic cells.

• Eukaryotic cells evolved when one prokaryotic cell engulfed another, establishing a symbiotic relationship.

• Eukaryotic cells are a result of a mutation in prokaryotic cells.

Which organelle is believed to have originated through endosymbiosis?

• Nucleus

• Golgi apparatus

• Mitochondria

• Ribosome

What is the primary function of cell differentiation in multicellular organisms?

• To increase the size of the organism

• To enable specialized functions through the development of specialized tissues

• To create identical copies of the original cell

• To allow cells to move independently

Which of the following is an example of a cell that has differentiated?

• Stem cell

• Skin cell

• Bacterial cell

• Yeast cell

Which of the following statements best describes the evolution of multicellularity?

• It occurred in a single event in the history of life on Earth.

• It happened independently in multiple lineages over time.

• It is a process that occurred only in plant species.

• It was a result of a single mutation in prokaryotic cells.

What evidence supports the endosymbiotic theory for the origin of mitochondria?

• Mitochondria have their own DNA similar to bacterial DNA.

• Mitochondria can survive independently outside the cell.

• Mitochondria are found in both prokaryotic and eukaryotic cells.

• Mitochondria are inherited only from the father.

Which of the following is NOT a characteristic of eukaryotic cells?

• Presence of a nucleus

• Linear DNA

• Presence of ribosomes

• Lack of a cell membrane

What role do stem cells play in cell differentiation?

• They are undifferentiated cells that can develop into specialized cell types.

• They are the final form of differentiated cells.

• They are only found in adult organisms.

• They cannot divide or replicate.

How does multicellularity benefit an organism?

• It allows for greater individual cell independence.

• It enables division of labor among specialized cells.

• It limits the size of the organism.

• It reduces the organism's complexity.

Which of the following processes is essential for the development of specialized tissues in multicellular organisms?

• Binary fission

• Meiosis

• Cell differentiation

• Photosynthesis