found in brainly
a. The proteins make up the matrix of the membrane.
b. The model can be likened to a sandwich where phospholipids are like the bread and proteins are like the filling.
c. The fluid nature of the membrane is regulated by flip-flopping of the phospholipids from one side of the membrane to the other.
d. Proteins and phospholipids can move sideways within the plane of the membrane.
Histrionicus
Ace
The correct answer is option D.
plasma membrane :
phospholipids move in lateral motion
is a barrier between outer & inner part of the cell
has a lipid bilayer & a hydrophilic head and hydrophobic tail
movement of lipids & proteins are called lateral diffusion