The Fantastic Voyage is becoming close to reality. The class reads an article on the use of nanotechnology in the medical field and participate in a discussion about what they read. The discussion method helps class members become more...

This resource describes the structure and functions of the cell membrane.

This cellular biology page presents extensive detail on the chemical nature of the cell membrane. Using the Chime plug-in, students can manipulate and study models of the membrane.

Discusses the structure of a cell membrane, the role of membrane proteins, and the differences between integral membrane proteins and peripheral membrane proteins as regards to their functions, location, and relationship with the...

Article takes an in-depth look at the structure and function of the plasma membrane and cytoplasm of cells, the phospholipid bilayer, and microvilli.

Describes plant cells and the structure and function of their different parts.

Presents labeled illustrations of a plant cell and an animal cell which demonstrate the parts that are common and different. Next is a table listing cell organelles and stating whether each is present or absent in a plant or animal cell....

Carrier proteins and channel proteins are both involved in cell transport across the plasma membrane. Their functions, similarities, and differences are described in this resource. Includes examples for active, facilitated, and passive...

This site has information on how facilitated diffusion of ions takes place through proteins, or assemblies of proteins, embedded in the plasma membrane. Includes a helpful diagram.

Learn about the complex structures inside cells and what their functions are.

Learn about gradients of molecules that exist across cell membranes, how they can help or hinder transport, and how active transport mechanisms allow molecules to move against their gradients.

Describes the three types of plant cells and their differences, and the structures within a plant cell and their functions.

The parts of an animal cell are presented with descriptions of each of its organelles.

Describes the structure and functions of a cell membrane.

Article takes a look at the different components (protein, lipid, cholesterol, and carbohydrate) of the plasma membrane, examining their roles, their diversity, and how they work together to make a secure boundary around the cell.

Learn how signals are relayed inside a cell starting from the cell membrane receptor. Look at the general characteristics of intracellular signal transduction pathways, as well as some relay mechanisms commonly used in these pathways.

The fluid mosaic model provides an explanation of the structure of biological membranes. It explains why a membrane can perform all of its functions, e.g., permeability and adhesion. This resource describes the main components of a cell...

Endocytosis enables cells to absorb extracellular nutrients that are needed for their survival. In receptor-mediated endocytosis, a protein receptor on the cell membrane binds to a nutrient molecule and facilitates its absorption through...

Provides a labeled diagram of a plant cell and descriptions of the characteristics and functions of many of its organelles.

Explains what happens during the active transport process where substances are moved across a cell membrane.

Students learn about molecules, cells, and systems. Some topics investigated in the tutorial are cell types, enzymes, plasma membranes, and the heart.

Explains the process of facilitated diffusion which allows selective movement of materials across the cellular membrane.

This seven-page Biology course handout gives a detailed explanation, accompanied by many illustrations, of the various processes by which substances travel across the membranes of cells.

Article looks at the structure and function of the different parts of the endomembrane system, how proteins, lipids, and vesicles are transported between these parts, and how this activity keeps the cell running smoothly.