The structure that surround and protect the cell depends on the cell type: for plants cells it would be a cell wall whereas for an animal cell it would be the cell membrane :)
Photosynthesis takes place in the chloroplast of the plant cell.
Mitosis happens to our skins cells to replace those that are damaged or have died. Cells have a limit, and then they commit cell suicide or apoptosis. Before dying or be damaged, the skin cells first reproduce themselves in order help keep our body protected with our first layer of defense.
The tapeworm is a parasite, and the dog is a host.
I have kinda of the same question but I don’t know it
