There are many theories that have been proposed to explain the structure of cell or plasma membrane.
The unit theory proposed by Robertson says that it consists of two layers of phospho-lipid molecules and proteins on either side of the membrane.
The fluid mosaic model proposed by Singer and Nicholson is the most widely accepted one.It says that it consists of phospho-lipid bilayer and proteins(like unit membrane theory) but gives additional information that the molecules are amphipathic(having hydrophobic tail and hydrophilic head).The proteins are attached to the molecules either superficially(extrinsic) or inserted wholly or partially(intrinsic)
The carrier proteins along with the phospho-lipid molecules play an important role in the movement of molecules inside or outside the cell by active or passive transportation
Well cell parts don't have cell membranes.cell membrane is a organelle that controls what goes in and out of the cell itself.
Heres the cell parts though there are two different types of cells
Animal cells, and plant cells
Animal cells
1) cell membrane
2) nucleus
3) mitochondria
4) ribosomes
5) endoplasmic reticulum
6) lysosomes
7) vacuoles
8) Golgi Body or Golgi apparatus
9) centriole
Plant cells
1) cell wall
2) cell membrane
3) mitochondria
4) chloroplasts
5) ribosomes
5) endoplasmic reticulum
6) lysosomes
7) Golgi body or Golgi apparatus
8) vacuole
9) nucleus
i hope this helped =]
draw and label a plasma membrane
cell membrane
where is the cell control membrane and the cell membrane
Cell membrane
the cell membrane
cell (plasma) membrane
The cell membrane controls movement of materials in and out of the cell.
The selective permeability of the cell membrane
cell membrane
cell membrane
Cell Membrane
the cell membrane is as flexible barrier outside of the cell.
where is the cell control membrane and the cell membrane
Cell membrane
in plants cell surface membrane! and in animal plasma membrane!
The outer edge of a plant cell is called the cell wall
cell membrane
Its called the cell membrane or the plasma membrane.