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Q: What are the special doorways in the cell membrane made of?
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Where are cell products chemically modified and stored?

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.


What cell structures are made primarily from phospholipids?

cell membrane


What are the special structures in the cell membrane that allows materials such as water and sugar to pass made of?

proteins


What are the special structures in the cell membrane that allow such as water and sugar to pass through made of?

PROTEIN!!!!!!!!!!!!!!!!!!!!!!!!!


What are the special structures in the cell membrane that allows such as water and sugar to pass through made of?

proteins


What are the special in cell membrane that allow materials such as water and sugar to pass through made of?

proteins


Can substances move in and out of the cell membrane?

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.


What are special structures in the cell membrane that allow materials such as water and sugar pass through made of?

PROTEIN!!!!!!!!!!!!!!!!!!!!!!!!!


Is protoplasm made of the cell membrane?

The cell membrane is made of carbohydrate, lipid, and protein molecules.


What are cell membrane pores are made of?

Cell membrane pores are made up of protein.


The outside of an animal cell is?

This is the cell membrane or plasma membrane which is made of a phospholipid bilayer.


What cell membrane is made of a?

The cell membrane is made up of a bilayer of phospholipids.