<prompt> Decreased protein : lipid ratio is seen in:Inner mitochondrial membraneOuter mitochondrial membraneSarcoplasmic reticulumMyelin sheath membrane  <response>: Ans. d Myelin sheath membraneRef: Ganong, 25th edp.34Proteins are the major constituents of cell membraneInner mitochondria membrane has maximum protein concentrationThe only exception where lipids outnumber proteins is Myelin sheath of nerve cell membrane 