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.
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.
Another theme is friendship. They are often depicted as close friends in the series, and fanfictions explore their bond further, how they support each other through tough times. For example, in some stories, Sydney helps Max when he's having doubts about his powers. It's also common to see a bit of a romantic undertone in some fanfictions, even if it's not the main focus. Maybe a hint of a possible future relationship between Max and Sydney as they grow closer through their shared experiences.
In the context of what could be 'Max Rebo A Star Wars Story', Max Rebo is a significant figure. He's an Ortolan, which is a species in the Star Wars world. His music was a big part of the seedy and colorful atmosphere in places like Jabba's court. He's not just a musician but also someone who was in the middle of a lot of the action and intrigue that went on in those parts of the galaxy.
It could be someone from Goku's past who has a vendetta against him and takes advantage of the chaos during the Cell Games. For instance, an old enemy who was thought to be defeated but managed to come back stronger and wants to finish Goku off while he's weakened from the fight with Cell.