Why are humans different shapes and sizes?
Every living thing is different (More or less)
Cells are different shapes and sizes because they have different functions. The functions dictate the shapes and sizes.
The size of the membrane pores depend on the proteins constituting the pore, thus different proteins may cause different pore sizes. So in most cases, yes, the "pores" will most likely be of different sizes.
plants cells are very different. the main difference is: the plant cell has a cell wall and the animal cell doesn't. also their shapes are different.
Size and shape are directly related to structure and function of said cell. Also, for example, plant cells are often in rectangles as they have cell walls where as animal cells are often 'blobby' because they have a cell wall and no cell membrane
cell are the basic building block of an organism .they are present every where in body.cells are different in shapes and size because they have to perform there functions accordingly where they are present.
The Cell Wall
Cells have all different shapes and sizes depending on what type of cell it is. For instance, a nerve cell is typically long and about 100 centimeter.
In an animal the structure and support of the being doesn't depend on the strength of each cell but in a plant cell the structure depends on the strength and rigidity of the cell. Therefore, the plant cell has the regular shapes.
Plant cells usually have a fixed shape while animal cells usually have an irregular shape. Plants do not have bones unlike animals and thus have a cellulose cell wall to cause the cell to have a fixed shape. Thus, cell shapes are different for each cell.
cell membrane and cell wall
no not all cells are the same size. Cells come in different sizes depending on where the cell is found or its organelles inside. Some cells have a flagellum that hepls it move and some cells have cilia that hepl it move these are two different ways of moving and thay are different sizes.
In an animal the structure and support of the being doesn't depend on the strength of each cell but in a plant cell the structure depends on the strength and rigidity of the cell. Therefore, the plant cell has the regular shapes.