Thursday Morning Riddle

I’m a unit of life; I’m a portable phone;
I’m a room in a prison where convicts are thrown;
I’m a box with a column and row of my own;
And a small group of terrorists working alone.

Who am I?

UPDATE: Riddle solved by Asher. See comments for answer.

2 Responses to “Thursday Morning Riddle”

  1. Asher Says:

    Cell

  2. Bill Says:

    CELL is correct. Way to go, Asher!

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