Here's a hint, what can animals do that plants cannot?
Do Animals Have Cell Walls. A cell wall is a structural layer surrounding some types of cells, just outside the cell membrane. Animal cells do not have cell walls because they do not need them.
Animal and plant cells. - ppt download from slideplayer.com
A cell wall is a structural layer surrounding some types of cells, just outside the cell membrane. Animals have only cell membranes made up of phospholipid bilayer and protein which protects and hold together the cell and its parts, it does not need to provide the support that plant cell was provide. Although the cell wall is tough, many materials, including water and oxygen, can pass through easily.
Animal cells have many different structures depending on their function.
All cells have cell membranes, and the membranes are flexible. Both plant cells and animal cells have flexible membranes, but these are inside walls in plant cells, sort of like a trash bag in a trash can. Animal cells have centrosomes (or a pair of centrioles), and lysosomes, whereas plant cells do not. When looking under a microscope, the cell wall is an easy way to distinguish plant cells.
