Hi there,
The answer is practically everything. It keeps out water, blood, and all the other liquids in the body(i think that blood and water are the only 2 though.)
When viruses attack a cell the cell wall is working as hard as it can to keep the DNA from entering, but the viruses are too strons. When you think about it, the cell wall is there for protection. If anything gets into the cell, it would most likely kill you or turn you into a zombie, which would start the zombie apocolips. Just kidding, but really, it is there for a good reason.---The Science Geek
Nonpolar lipid layers
Some examples of regulatory proteins that prevent a cell from entering the S phase include the retinoblastoma protein (Rb), which acts as a tumor suppressor by inhibiting cell cycle progression, and the cyclin-dependent kinase inhibitors (CDKIs) like p21 and p27, which regulate CDK activity to block S phase entry. These proteins help maintain normal cell cycle control and prevent uncontrolled cell proliferation.
Phospholipids in the cell membrane prevent water from entering a cell.
Phospholipids in the cell membrane prevent water from entering a cell.
The rigid layer of non-living material that surrounds the cell of plants and other organisms is called the cell wall. It provides structural support and protection to the cell, helping to maintain its shape and prevent damage. The cell wall is made up of cellulose in plants and peptidoglycan in bacteria.
Phospholipids in the cell membrane prevent water from entering a cell.
Phospholipids
Nonpolar lipid layers
Nonpolar lipid layers
cell protection
Plant cell does not have well developed internal organs for preserving water and for osmoregulatio so to prevent loss of water, and also to prevent entering of extra water they need cell wall, secondly they also need it as their first line defence against pathogens
Plant cell does not have well developed internal organs for preserving water and for osmoregulatio so to prevent loss of water, and also to prevent entering of extra water they need cell wall, secondly they also need it as their first line defence against pathogens
The purpose of a plant's cell wall is to help control the nutrients and wastes entering and exiting the cell.
Nonpolar lipid layers
yes
yes
Some examples of regulatory proteins that prevent a cell from entering the S phase include the retinoblastoma protein (Rb), which acts as a tumor suppressor by inhibiting cell cycle progression, and the cyclin-dependent kinase inhibitors (CDKIs) like p21 and p27, which regulate CDK activity to block S phase entry. These proteins help maintain normal cell cycle control and prevent uncontrolled cell proliferation.