Which macromolecule is a primary component of cell walls, and which argument provides evidence for how the structure of this mol
ecule 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.
Cells must move materials through the {membrane} and throughout the {cytoplasm} to maintain {homeostasis} Movement of substances is regulated because membranes are {semi} permeable. Membranes are {phospholipid} bilayers that contain embedded {proteins} The cells external environment and cytoplasm are aqueous, meaning that solutes such as {salt}are dissolved in a solvent called {water} Water may travel slowly through the membrane by {osmosis} or quickly through protein channels called {aquaporins}
