Question

the outer boundary of a cell is the
multiple choice
mitochondrial membrane.
plasma membrane.
nuclear envelope.
golgi apparatus.

Explanation:

The plasma membrane is the outer - most boundary of a cell that separates the cell's interior from the external environment. The mitochondrial membrane is part of the mitochondria, the nuclear envelope surrounds the nucleus, and the Golgi apparatus is an organelle inside the cell.

Answer:

B. plasma membrane