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It is called the golgi bodies. They modify and packs proteins.
Proteins enter and leave the cell through endocytosis and exocytosis, respectively.
Proteins made on "bound" (attached) ribosomes leave through the cell membrane, and other proteins will enter the cell.
The only things that enter and leave cells are molecules and proteins. organelles do not leave the cell.
Copies of DNA do not leave the cell, they split, rebuild into two daughter copies, and then separate into opposite sides of the cell, which then divides. The DNA never passes the plasma membrane of the cell. Answer In vessicles.
These proteins are called self markers. They tell the immune cells that they belong in the body and they should be attacked.Cell receptors (proteins) on the cell membrane mediate the inter cellular communications.
Transport proteins provide channels for certain solutes to enter and leave the cell.
Transport proteins allow nutrients to enter and leave cells. Transport proteins are peppered throughout the cell membrane. Most molecules need the transport proteins to enter or leave the cell, but it's possible for some molecules, like water, to diffuse through the membrane by osmosis.
The cell that packages proteins and other things are the Golgi Apparatus.
The cell organelle that makes proteins is called the ribosomes .
ribosomes
Ribosomes make proteins for the cell.