The cellular structure which is primarily responsible for determining which substances enter and leave the cell is the

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The cell membrane is the primary structure responsible for regulating the movement of substances into and out of the cell. The cell wall, peptidoglycan layer, capsule, and teichoic acid layer are all secondary structures that may provide additional support or protection, but do not serve the same function as the cell membrane.

The Cellular Structure Which Is Primarily Responsible for Determining Which