Which macromolecule is a primary component of cell walls, and which argument provides evidence for how the structure of this molecule relates to its purpose within the cell wall?
A
Lipids are the primary component, and they repel and prevent excess uptake of water because they form carbon chains.
B
Lipids are the primary component, and they protect the cell and help maintain its shape because they form carbon rings.
C
Carbohydrates are the primary component, and they repel and prevent excess uptake of water because they form carbon chains.
D
Carbohydrates are the primary component, and they protect the cell and help maintain its shape because they form carbon rings.