Answer;
-Phospholipids and protein
Explanation;
-The plasma membrane is composed of a phospholipid bilayer arranged back-to-back. It is also covered in places with cholesterol molecules and proteins. The plasma membrane is selectively permeable and regulates which molecules are allowed to enter and exit the cell.
- The membrane is an extremely thin layer of lipids and protein that forms outer boundary of every cell, It controls movement of molecules between the cell and its environment, Participates in joining cells to form tissues and organs and also plays important role in the ability of a cell to respond to changes in the cell's environment.
SF6 AND XeF4 are the species that will have an expanded octet structure.
Sulfur hexafluoride (SF6) has an octet geometry where one sulfur atom is surrounded by 6 fluoride atoms. Xenon Tetrafluoride (XeF4) is a square planar compound and an octahedral because of the presence of lone pairs of electrons.