Arrange these levels or components from the largest enclosing boundary inward: cytosol, plasma membrane, cell contents.
Answer
Plasma membrane, Cell contents, Cytosol
Explanation
The plasma membrane encloses the cell contents. Cytosol is the liquid portion within the cytoplasm, so it lies inside the cell boundary and forms part of the internal cellular environment. **Key takeaway:** The membrane bounds the cell; cytosol is inside it. **Glossary:** Cytoplasm: contents enclosed by the plasma membrane.