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BIO NMDCAT Cytoplasmic Organelles
nmdcat.online July 4, 2026

60. The specific lipid component found predominantly within the inner mitochondrial membrane that reduces permeability to protons (H+) is

A. Cholesterol
B. Phosphatidylcholine
C. Cardiolipin
✓
D. Sphingomyelin

📝 Explanation

Cardiolipin is a double-phospholipid compound unique to the inner mitochondrial membrane that acts as an electrical insulator to block proton leakage.

📖 Additional Information

  • Cholesterol
  • Phosphatidylcholine
  • Cardiolipin
  • Sphingomyelin

Cardiolipin is a double-phospholipid compound unique to the inner mitochondrial membrane that acts as an electrical insulator to block proton leakage.

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