In this fanfiction, perhaps Cell returns with an army of his own clones. He could be seeking revenge on the Z - fighters for his previous defeat. The story might focus on how the heroes train to face this new threat from Cell. It could also introduce new characters who team up with the Z - fighters to take on Cell and his clones. There could be a lot of intense fight scenes and power - up moments.
It might still be Goku. Since Cell is coming back, Goku would be the one to step up and defend the Earth once again. He would be at the center of the fight against Cell.
One major difference is that plant cells have cell walls while animal cells don't. This makes plant cells more rigid. Also, plant cells have chloroplasts for photosynthesis which animal cells lack. Instead, animal cells rely on consuming other organisms for energy.
I'm not sure specifically what a 'catherine cell' is in this context as the term is rather unclear. It could be a very specific or made - up concept within that particular story.
One of the main features is the endoplasmic reticulum which has two types, rough and smooth. The rough endoplasmic reticulum with ribosomes on it is involved in protein synthesis. The smooth one is involved in lipid synthesis. Another feature is the Golgi apparatus which packages and distributes substances. The lysosomes for waste management are also a main feature in Cell City.
A plant cell is like a little factory within a plant. It has a rigid cell wall that gives the plant structure, like the bricks of a building. The chloroplasts in plant cells are amazing as they perform photosynthesis, converting sunlight into energy. Animal cells, on the other hand, don't have cell walls but have a more flexible cell membrane. They are also more diverse in shape. For example, nerve cells are long and spindly to transmit signals over long distances. And red blood cells are disc - shaped to carry oxygen efficiently.
The cell wall is a rigid structure. In the context of a school, it could be like the outer walls of the school building. These outer walls give the school its shape and protect the inside from the outside elements, much like how the cell wall protects the cell contents. It also gives a sense of separation between the school environment and the outside world, just as the cell wall separates the cell from its surroundings.
In a 'cell as a city story', both a cell and a real city have boundaries. A cell has a cell membrane that controls what enters and leaves, much like a city has city limits and border checkpoints. Also, communication is important in both. In a city, there are communication networks like phones and the internet. In a cell, there are chemical signals that allow different parts of the cell to communicate with each other.
A cell can be compared to a school as follows. The cytoplasm is like the general school environment. All the other organelles (like students and teachers) exist within it. The ribosomes are the study desks where the important work of protein synthesis (like students studying) occurs. The endoplasmic reticulum is like the school's internal communication system that transports important things around, similar to how it transports proteins in a cell.
The following are some recommended novels about the evolution of cells in the system: My Evolved Cell, Infinite Beginning from Cell Evolution, Microscopic Black Technology, Infinite Evolution Starting from Cell, and Cell Super Evolution. These novels cover different topics and styles of cell evolution. I hope you will like one of them.