Which types of molecules are hydrophilic and therefore excluded from the hydrophobic portion of the phospholipid bilayer?

The molecules that are water loving are known as hydrophillic in nature. The phospholipid bi layer has both the parts in it. One part of the cell membrane is hydrophillic in nature and other part is hydrophobic.

The hydrophillic parts repels the hydrophobic substances and the hydrophobic part repels the hydrophillic substances.

The molecules such as water is hydrophillic in nature and is excluded from the hydrophobic part of cell membrane.

Pheripheral membrane proteins

Explanation:

Peripheral membrane proteins are referred to those proteins that are stick to the biological membrane. The main function of these proteins is that they can be stick to both sides of the membrane. it can also felicitate and control cell growth and structure

The main function of peripheral membrane proteins is to maintain the inter-cellular cytoskeleton.