1. evolution
The aerobic prokaryote was enclosed by the bacterium's cell surface membrane in the process of endocytosis, which is made easy by the absence of a cell wall in the bacterium. The aerobic prokaryote wasn't digested but continued to function inside the other cell. The host cell received energy that the aerobic prokaryote released. ... A similar process occurred later with the host cell and photosynthetic prokaryotes. ... Plant stems grow tall in search of sunlight, plant roots grow deep into the soil in search of water and nutrients. ...
- Word Count: 2685
- Approx Pages: 11
- Grade Level: High School