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.
Protoplasm includes the cell's cytoplasm and nucleus, which are contained within the cell membrane. The cell membrane acts as a boundary that separates the protoplasm from the external environment.
The cell membrane is made of the lipid bilayer which contains lipids and proteins.
A cell is surrounded by a plasma membrane, which regulates the passage of substances in and out of the cell.
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!!!!!!!!!!!!!!!!!!!!!!!!!
cell membrane
Cell membrane pores are made up of protein.
Protoplasm includes the cell's cytoplasm and nucleus, which are contained within the cell membrane. The cell membrane acts as a boundary that separates the protoplasm from the external environment.
The cell membrane is made up of a bilayer of phospholipids.
The cell membrane is made of the lipid bilayer which contains lipids and proteins.
The cell membrane is made up of phospholipids; hydrophobic and hydrophilic. The cell is only in plant cells and is made of cellulose.