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the cell membrane. It regulates what enters and exits the cell.
Cell Nucleus
Cell wall
chloroplast
Cell membrane
the cell membrane. It regulates what enters and exits the cell.
Cell Nucleus
its the cell wall
Smooth muscle surrounding the bladder pushes urine out of the urethra.
cell membrane
Cell wall
cell membrane
nucleus
chloroplast
Cell membrane
It hold the structure of the cell together. It also regulate what enters and exits the cell.
Cell membrane