Given below are two statements
Statement (I) : The lipids found in the inner (cell) membrane of bacteria are phospholipids.
Statement (II) : The lipids in the outer membrane of Gram negative bacteria contain both phospholipids and lipopolysaccharides.
In light of the above statements, choose the most appropriate answer from the options given below:
नीचे दो कथन दिए गए हैं
कथन (I) : जीवाणुओं की आंतरिक (कोशिका) झिल्ली में पाए जाने वाले लिपिड फॉस्फोलिपिड्स (phospholipids) होते हैं।
कथन (II) : ग्राम-नेगेटिव जीवाणुओं की बाहरी झिल्ली के लिपिड में फॉस्फोलिपिड्स और लिपोपॉलीसेकेराइड्स (LPS) दोनों होते हैं।
उपरोक्त कथनों के आलोक में, नीचे दिए गए विकल्पों में से सबसे उपयुक्त उत्तर चुनिए:
Bacterial Cell Envelope and Membrane Architecture:
- Statement (I) is CORRECT: The inner cytoplasmic membrane of all eubacteria is a symmetrical phospholipid bilayer (predominantly phosphatidylethanolamine, phosphatidylglycerol, and cardiolipin) intercalated with proteins.
- Statement (II) is CORRECT: Gram-negative bacteria possess an asymmetric outer membrane: the inner leaflet is composed of standard phospholipids, whereas the outer leaflet is composed of complex lipopolysaccharides (LPS / endotoxin) consisting of Lipid A, core polysaccharide, and O-antigen side chains.
Therefore, both Statement (I) and Statement (II) are correct.
Correct Answer: Option 1.
विस्तृत व्याख्या:
Bacterial Cell Envelope and Membrane Architecture (जीवाणु कोशिका झिल्ली संरचना):
- Statement (I) is CORRECT: The inner cytoplasmic membrane of all eubacteria is a symmetrical phospholipid bilayer (predominantly phosphatidylethanolamine, phosphatidylglycerol, and cardiolipin) intercalated with proteins.
- Statement (II) is CORRECT: Gram-negative bacteria possess an asymmetric outer membrane: the inner leaflet is composed of standard phospholipids, whereas the outer leaflet is composed of complex lipopolysaccharides (LPS / endotoxin) consisting of Lipid A, core polysaccharide, and O-antigen side chains.
Therefore, both Statement (I) and Statement (II) are correct.
Correct Answer: Option 1.
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