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2006-09-17 06:57:53 · 7 answers · asked by Anonymous in Science & Mathematics Biology

7 answers

Cell Wall
Structure
- a non-living secretion of the cell membrane, composed of
cellulose
- cellulose fibrils deposited in alternating layers for strength
- contains pits (openings) that make it totally permeable

Function
- provides protection from physical injury
- together with vacuole, provides skeletal support

A cell wall is a more or less solid layer surrounding a cell. They are found in bacteria, archaea, fungi, plants, and algae. Animals and most other protists have cell membranes without surrounding cell walls. Plant cell walls have a number of functions: they provide rigidity to the cell for structural and mechanical support, maintaining cell shape, the direction of cell growth and ultimately the architecture of the plant. The cell wall also prevents expansion when water enters the cell. The term turgor is used to describe this pressure that is induced by excess water inside the plant cell. Cell walls protect against pathogens and the environment and are a store of carbohydrates for the plant. The cell wall is constructed primarily from a carbohydrate polymer called cellulose.

2006-09-17 07:10:23 · answer #1 · answered by Redshift Agenda 3 · 1 0

Well simply the cell wall is a structure made of cellulose. It is only found on plant cells. The cell wall causes the cell to have a firm/ definite shape which protects and support it The cell wall controls what enters and goes out of the cell. It is said to be "fully- permeable"; allowing all things to go through.

2006-09-17 14:50:23 · answer #2 · answered by J D 3 · 0 0

To keep some things in and others out. It also allows some things to pass through like oxygen and water.

2006-09-17 14:00:37 · answer #3 · answered by nighthawk8713 3 · 1 1

to protect and to provide skeletal support..kind of like your skin protecting you from the suns uv rays ..and like your skeletal system helping to support your body

2006-09-17 14:26:47 · answer #4 · answered by bella! 2 · 0 0

Protection and containment.

2006-09-17 14:03:53 · answer #5 · answered by albert 5 · 1 0

protection.

2006-09-17 14:22:13 · answer #6 · answered by sherrylboodramhot 2 · 0 0

go ask your teacher

2006-09-17 14:04:58 · answer #7 · answered by zakriyaakhan 1 · 0 0

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