Question

based on the image below, what macromolecule makes up the plasma membrane and controls what leaves and enters a cell?
nucleic acids
carbohydrates
lipids
proteins

Explanation:

The plasma membrane is made of a phospholipid bilayer (a type of lipid). Lipids are a major component of the plasma membrane structure. Proteins are embedded in the membrane and have functions like transport but are not the main structural component. Carbohydrates are often attached to proteins or lipids on the membrane surface but are not the primary building block. Nucleic acids (like DNA and RNA) are not part of the plasma membrane structure.

Answer:

Lipids