The bacteria without cell wall but having cell membrane ,capsule and protoplasm is called protoplast.
Some bacteria when treated with enzyme lysosome, their cellwall dissolve without destroying any internal structure . This is because the enzyme lysozyme hydrolyses the bond between N-acetyl muramic acid and N-acetyl glucosamine. These bacteria without cell wall is called Protoplast. Protoplast posses many of the physiological characteristics except they are non-motile ,unable to divide.
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