Question

which structure surrounds the cytoplasm of the cell and separates the interior of the cell from the external environment? multiple choice plasma membrane endoplasmic reticulum nucleoid nucleus

Explanation:

The plasma membrane surrounds the cell's cytoplasm and acts as a barrier between the cell's interior and the external environment. The endoplasmic reticulum is involved in protein and lipid synthesis, the nucleoid is the region in prokaryotes where the genetic material is located, and the nucleus is a membrane - bound organelle that contains the cell's genetic material.

Answer:

plasma membrane