Rough Endoplasmic Reticulum and Smooth Endoplasmic Reticulum.
The answer is proteins.
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Well, the organelle that contributes to cell division is definetly, bacteria.
That would be mitochondria.
membranes that's wrong its cell cement
Endoplasmic Reticulum
The cell membrane is a lipid bilayer while the organelle membranes are usually a single layer of lipids. The nucleus, mitochondria and chloroplasts are the exception and have a lipid bilayer. AS you see, it depends on which organelle. The nucleus, mitochondria and chloroplasts have a bilayer (2). The others have one.
mitochondria, nucleus, chloroplast
The rough endoplasmic reticulum synthesizes membranes.
There are none. Organelles are found IN cells. They are made up of membranes and proteins. An organelle to a cell is like an organ to a human.
Golgi Apparatus