A biology student creates a table that shows the function of the four major macromolecules.

For which macromolecule does the student list an incorrect function?

a
the lipids, because they are responsible for long-term energy storage
b
the proteins, because they are responsible for helping plants retain water
c
the nucleic acids, because they are responsible for providing support for the cell wall
d
the carbohydrates, because they are entirely responsible for the structure of the cell membrane

d. the carbohydrates, because they are entirely responsible for the structure of the cell membrane