what in a city is a cell membrane like?

2 ⤊

the city limits (or the border)

2006-10-02 09:31:58 · answer #1 · answered by Anonymous · 0⤊ 0⤋

It's like the fortifed walls around an old medieval city. They keep the people inside safe and regulates the people coming in.

2006-10-02 16:32:42 · answer #2 · answered by TonySti 2 · 2⤊ 0⤋

The highway that goes around it? Like in Boston it would be Route 128

2006-10-02 16:32:15 · answer #3 · answered by WendyD1999 5 · 0⤊ 0⤋