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Question
Lysozyme treated wall less bacteria are called as
Lysozyme treated wall less bacteria are called as
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Solution
The correct option is B L-form bacteria
The cell walls of bacteria are composed of a macromolecule peptidoglycan chains which are cross-linked by short peptide fragments to provide a strong but flexible support framework. Lysozyme targets the peptide cross-links in the peptidoglycan and disrupt the cell wall integrity. Exposure of lysozyme to bacteria makes them loose their cell wall completely and become protoplast (a fragile cell bounded only by a membrane) known as L-form bacteria or cell wall deficient bacteria. Option B is correct. PPLO (Pleuro pneumonia like organism), the alternate name for Mycoplasma, is the smallest prokaryotic organism that naturally lack cell wall but have rigid plasma membrane rich in sterols and lipoglycans; option A is incorrect. The Gram-negative cell wall is characterized by presence of cell wall with thick outer membrane and a thinner peptidoglycan layer which makes option C incorrect. Clostridium is a Gram positive bacterium with thick cell wall which is made up of peptidogycan, teichoic acid and lipoteichoic acid. Option D is incorrect. Thus, the correct answer is option B.
The cell walls of bacteria are composed of a macromolecule peptidoglycan chains which are cross-linked by short peptide fragments to provide a strong but flexible support framework. Lysozyme targets the peptide cross-links in the peptidoglycan and disrupt the cell wall integrity. Exposure of lysozyme to bacteria makes them loose their cell wall completely and become protoplast (a fragile cell bounded only by a membrane) known as L-form bacteria or cell wall deficient bacteria. Option B is correct. PPLO (Pleuro pneumonia like organism), the alternate name for Mycoplasma, is the smallest prokaryotic organism that naturally lack cell wall but have rigid plasma membrane rich in sterols and lipoglycans; option A is incorrect. The Gram-negative cell wall is characterized by presence of cell wall with thick outer membrane and a thinner peptidoglycan layer which makes option C incorrect. Clostridium is a Gram positive bacterium with thick cell wall which is made up of peptidogycan, teichoic acid and lipoteichoic acid. Option D is incorrect. Thus, the correct answer is option B.
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