Imagine your cells as being itty-bitty citizens in the kingdom of "you"....and your cell walls as being the armor or clothing of said people.....The cell walls are no more than a protective layer that keep nasty infections and bacteria out while also retaining the things that make up that specific cell....
These cells, when they die, are used to reinforce the larger structures of a body, like our skin, hair and finger nails.....although there are cells and other living organisms in us that don't have cell walls at all.....like our anti-bodies which envelope themselves around attacking/rogue cells so they can't do anymore harm....
So in short, cell walls are the armor that protects the nucleus found within....so they don't need to be alive
These cells, when they die, are used to reinforce the larger structures of a body, like our skin, hair and finger nails.....although there are cells and other living organisms in us that don't have cell walls at all.....like our anti-bodies which envelope themselves around attacking/rogue cells so they can't do anymore harm....
So in short, cell walls are the armor that protects the nucleus found within....so they don't need to be alive