Problem 1. Which organism is thought to be a precursor to mitochondria?
Problem 2. Which organism is thought to be a precursor to chloroplasts?
Problem 3. Unlike chloroplasts, mitochondria are found in the majority of eukaryotic cell types. What information does this tell us about the evolution of endosymbiosis? Provide a scientific justification.
Problem 4. Are both mitochondria and chloroplasts part of the endomembrane system? State yes or no. Briefly explain your answer.