What is a Structure That Separates the Contents of a Human

Question

What is a structure that separates the contents of a human cell from its surrounding medium?
A) cell wall
B) tissue
C) plasma membrane
D) skin
E) nucleus

Accepted Answer

The plasma membrane is a thin, semi-permeable structure that separates the contents of a human cell from its surrounding medium. It is composed of a phospholipid bilayer with embedded proteins, which regulates the passage of materials in and out of the cell. The cell wall is a structure found in plant cells that provides additional support and protection but is not present in human cells. Tissue refers to a group of similar cells that work together to perform a specific function and does not separate the contents of a cell. The skin is an organ that covers the outside of the body and does not separate the contents of a cell. The nucleus is a structure found within the cell that contains genetic material but does not act as a barrier between the cell contents and its surrounding medium.