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BIO NMDCAT Conjugated molecules
nmdcat.online July 3, 2026

81. The component of the bacterial cell wall in Gram-negative organisms that acts as a physical barrier against hydrophobic dangerous toxins and antibiotics is the

A. Cytoplasmic histone protein coat
B. Outer leaflet of the outer membrane made of lipopolysaccharides
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C. Matrix of purely non-polar storage fats
D. Layer of nucleoproteins floating in the periplasm

📝 Explanation

The dense, charged sugar chains of the lipopolysaccharide layer form a hydrophilic shield that resists the entry of hydrophobic toxic compounds.

📖 Additional Information

  • Cytoplasmic histone protein coat
  • Outer leaflet of the outer membrane made of lipopolysaccharides
  • Matrix of purely non-polar storage fats
  • Layer of nucleoproteins floating in the periplasm

The dense, charged sugar chains of the lipopolysaccharide layer form a hydrophilic shield that resists the entry of hydrophobic toxic compounds.

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