AP BIOLOGY

Detailed explanation-1: -It maintains the integrity of a cell and controls passage of materials into and out of the cell. All materials within a cell must have access to the cell membrane (the cell’s boundary) for the needed exchange. The cell membrane is a double layer of phospholipid molecules.

Detailed explanation-2: -Plasma membrane-controls what enters and leaves the cell (also present in eukaryotic cells) Ribosomes-the site of protein synthesis, (70s)

Detailed explanation-3: -Nucleus. Known as the cell’s “command center, ” the nucleus is a large organelle that stores the cell’s DNA (deoxyribonucleic acid). The nucleus controls all of the cell’s activities, such as growth and metabolism, using the DNA’s genetic information.

Detailed explanation-4: -Cell Membrane-The outside boundary of the animal cell, the part next to the cell wall in a plant. In both cells, it controls what enters and exits the cell.