Mitochondria and chloroplasts
- Mitochondria are the "powerhouses" of the cell, breaking down fuel molecules and capturing energy in cellular respiration.
- Chloroplasts are found in plants and algae. They're responsible for capturing light energy to make sugars in photosynthesis.
- Mitochondria and chloroplasts likely began as bacteria that were engulfed by larger cells (the endosymbiont theory).
- Chloroplasts are organelles found in the broccoli's cells, along with those of other plants and algae. They capture light energy and store it as fuel molecules in the plant's tissues.
- Mitochondria are found inside of your cells, along with the cells of plants. They convert the energy stored in molecules from the broccoli (or other fuel molecules) into a form the cell can use.
Where did these organelles come from?
- The first endosymbiotic event occurred: The ancestral eukaryote consumed aerobic bacteria that evolved into mitochondria.
- In a second endosymbiotic event, the early eukaryote consumed photosynthetic bacteria that evolved into chloroplasts."