No
Every cell has a a cell membrane and only water, oxygen, and CO2 can pass through it. The protein doorways help bring in large molecules. Waste products get sent out by the vesicles (which have there own membrane). Cells have organelles which are tiny organs in the cells. So basically the cell products are protected by the cell membrane which is made of layers of linked molecules.
proteins
Yes, how else could the cell live. Cell membranes have structures (holes) in them to allow things to move in and out. These holes are special structures in the membrane and they "control" what goes across the membrane. I have made a link below to a diagram of the cell membrane to show some of these structures.
The cell membrane is made of carbohydrate, lipid, and protein molecules.
This is the cell membrane or plasma membrane which is made of a phospholipid bilayer.
Every cell has a a cell membrane and only water, oxygen, and CO2 can pass through it. The protein doorways help bring in large molecules. Waste products get sent out by the vesicles (which have there own membrane). Cells have organelles which are tiny organs in the cells. So basically the cell products are protected by the cell membrane which is made of layers of linked molecules.
cell membrane
proteins
PROTEIN!!!!!!!!!!!!!!!!!!!!!!!!!
proteins
proteins
Yes, how else could the cell live. Cell membranes have structures (holes) in them to allow things to move in and out. These holes are special structures in the membrane and they "control" what goes across the membrane. I have made a link below to a diagram of the cell membrane to show some of these structures.
PROTEIN!!!!!!!!!!!!!!!!!!!!!!!!!
The cell membrane is made of carbohydrate, lipid, and protein molecules.
Cell membrane pores are made up of protein.
This is the cell membrane or plasma membrane which is made of a phospholipid bilayer.
The cell membrane is made up of a bilayer of phospholipids.