What is the outermost boundary of the cell called?

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Plasma membrane

Cytoplasm

Nuclear membrane

Cytosol

answer is A.

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Detailed Solution

The plasma membrane is also known as the cell membrane and serves as the outermost boundary of the cell. The plasma membrane is a selectively permeable membrane that regulates the movement of substances in and out of the cell. It is composed of a lipid bilayer and various proteins that help to maintain the structural integrity of the membrane and facilitate the transport of substances across it.

The cytoplasm is the gel-like substance inside the cell that contains all the cell's organelles and structures.

The nuclear membrane is a double-membrane structure that surrounds the nucleus and separates it from the cytoplasm.

The cytosol is the liquid portion of the cytoplasm, excluding the organelles.

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