This Cell Membrane Introduction worksheet helps students build a foundational understanding of the structure and function of the plasma membrane, as well as the different types of cellular transport. Students explore key vocabulary and concepts related to lipid bilayers, membrane proteins, and selective permeability. The basic structure includes explanatory paragraphs followed by questions.

The worksheet guides students through identifying and labeling key parts of the cell membrane, including phospholipids, proteins, cholesterol, and membrane orientation. Students also analyze how different substances move across the membrane using diffusion, osmosis, facilitated diffusion, active transport, endocytosis, and exocytosis.

In addition, students apply their understanding by answering short response and analysis questions that focus on how structure relates to function and how molecules move into and out of the cell.

An answer key is included for teacher convenience, making this resource easy to use for instruction, review, or assessment preparation in a biology or life science classroom.