Docstoc

What are Some Differences Between Plant and Animal Cells Animal

Document Sample
What are Some Differences Between Plant and Animal Cells Animal Powered By Docstoc
					What are Some Differences Between Plant and Animal Cells?


Animal     and plant cells have some key similarities and noted differences.
Understanding basic cell structure helps to understand how plant cells differ from
animal cells. They do differ in important ways, as plant cells provide different
functions for the plant, than animal cells provide for the body.

Both animal and plant cells have some similar structural elements. First off they are
both eukaryotic, which means they have a defined nucleus. The nucleus contains
chromosomes. It is protected and surrounded by the cytoplasm, which is a watery or
gel-like liquid. Further, animal and plant cells have a cell membrane that surrounds
the cell. This allows for the cell to exert control, in most cases, over what can
penetrate the cell, and what cannot.

One of the primary differences between animal and plant cells is that plant cells have
a cell wall made up of cellulose. This helps the plant cells to allow high pressure to
build inside of it, without bursting. A plant cell has to be able to accept large amounts
of liquid through osmosis, without being destroyed. An animal cell does not have this
cell wall. If you start to fill the animal cell with too much distilled water or other fluid,
it will eventually pop.
Plant cells also are different from animal cells because they use photosynthesis to
covert sunlight into needed food for the plant. Plant cells have chloroplasts, which has
its own DNA, essentially directing the work of the chloroplasts.

Also plant cells, if one could view them under the microscope, appear extremely
different than an animal cell because of the presence of a large vacuole, which exists
in the cell’s cytoplasm. It usually takes up most of the room in the cell, and the
membrane of the cell encircles it. It contains waste materials, water, and nutrients that
can be used or secreted as necessary.

Animal cells have small vacuoles and may have numerous ones. They never have the
large single vacuole that takes up most of the space in plant cells. As well, under the
microscope plant cells often have a more regular shape. Animal cells tend to vary
greatly in appearance.

The differences between plant and animal cells can become more complex, but the
primary differences exist in the above-mentioned ways. To sum, animal and plant
cells both have a nucleus, a cytoplasm, and a cell membrane. Plant cells also have a
large cell vacuole, chloroplasts, a cell wall and a regular shape. Small vacuoles, no
cell wall, varied shapes, and the absence of chloroplasts characterize animal cells.

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:18
posted:11/23/2011
language:English
pages:2