AP BIOLOGY

Detailed explanation-1: -The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.

Detailed explanation-2: -Lipids function as essential structural components of membranes, as signalling molecules, as chemical identifiers of specific membranes and as energy storage molecules.

Detailed explanation-3: -The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell. And that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.

Detailed explanation-4: -Phospholipids are major membrane lipids that consist of lipid bilayers. This basic cellular structure acts as a barrier to protect the cell against various environmental insults and more importantly, enables multiple cellular processes to occur in subcellular compartments.

Detailed explanation-5: -Within a cell membrane, the primary type of lipid used is the phospholipid. Phospholipids form the majority of our cell membranes and are made from two primary parts. These parts are the hydrophilic phosphate head and the hydrophobic fatty acid tail.