Why dose an animal cell not need a cell wall?
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thx dr.bob
An animal cell does not have a cell wall because it does not require the additional support and protection that a cell wall provides.
To understand this, let's look at the characteristics of both animal cells and plant cells. Plant cells have a rigid cell wall made of cellulose, which provides structural support and protection to the cell. It acts as a barrier, preventing the cell from bursting or collapsing under different environmental conditions. Additionally, the cell wall allows for the passage of substances and nutrients between neighboring cells.
On the other hand, animal cells do not possess a cell wall. Instead, they have a flexible cell membrane that surrounds and protects the cell. The cell membrane is composed of a phospholipid bilayer with embedded proteins, which acts as a selective barrier, controlling the movement of substances in and out of the cell. This flexibility allows animal cells to change their shape, which is essential for processes such as cell mobility and cell division.
Unlike plant cells, animal cells rely on internal support structures such as the cytoskeleton, which is made up of proteins and provides structural support for maintaining the cell's shape and allows for cell movement.
In summary, an animal cell does not need a cell wall because it relies on a flexible cell membrane and internal support structures, like the cytoskeleton, to provide the necessary support and protection for its functions.