The movement is random, but there is a net movement from regions where there are lots of particles to ones where there are fewer particles.
large particles or cells are engulfed by the cell plasma membrane
It is known as reproduction
No
well that depends on how long or tall it is!
Endocytosis
Because it is a semi permeable membrane IE. it only allows selective particles to go inside it and outside it.
The plasma membrane.
A cell membrane is also known as a plasma membrane or cytoplasmic membrane. The cell membrane separates the interior of a cell from its outside environment. The main function of a cell membrane is to protect the cell from its surroundings.
plasma membrane
... is called "facilitated diffusion".
Channel Protein.
The plasma membrane is referred to as a biological membrane or bio-membrane.Briefly, the plasma membrane may also be generally referred to as cell membrane.