Explanation of when the cell was discovered and how ideas have evolved into modern cell theory. Discover the cell structures and their functions.

Overview of mitosis and the cell structures that are critical to the process.

Explanation of complex and dynamic cell structures that are selective in regards to what is allowed to enter and exit cells.

Evidence in support of endosymbiosis to show the evolution of organelles within cells.

This module focuses on cell structure and how the organelles function together to form the smallest unit of life. The cell theory is also discussed along with the basics features of the cell. Site also includes an interactive practice...

Explanation of cell membranes and the way selective materials may move through them.

This site features a clear picture of the plant cell with a concise explanation of its key parts and their functions.

This is a thorough site which contains a glossary of plant/animal cell anatomy terms. Diagrams of both cells are included along with worksheets to label.

The following site provides information regarding the process of cell growth and division.

Cell division is the only way single-celled organisms can reproduce. Learn more about cell division and explore the phases, checkpoints, and protein regulators of the cell cycle in this interactive. Find out how mutated versions of these...

This article looks at a few of the most important core cell cycle regulators: proteins called cyclins, enzymes called Cdks, and an enzyme complex called the APC/C.

An excerpt from the eBook, "Essentials of Cell Biology, Unit 1.2." Text and illustrations allow for deeper understanding of cells.

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

This study resource from Khan Academy provides practice questions for the MCAT. "Cell theory" questions are provided on this resource.

In-depth information on all stages of cell biology as well as lesson ideas, tutorial diagrams, and online labs.

Advanced chapter of the book "The Molecular Biology of the Cell" describes and provides illustrations of our most current understanding of the chemical makeup of cells and their components. Explains in detail how electron activity keeps...

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

This article examines the basic principles of how cells communicate with one another using different kinds of short- and long-range signaling.

Learn how cells use checkpoints to regulate the cell cycle. This article provides an overview of cell cycle control, outlining the factors that influence a cell's decision to pause or progress at each checkpoint.

This interactive feature describes some of the most important structures and functions of the cell membrane.

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....

Thorough introduction to cells and their importance to life. Includes various types of cells and their function. Good diagrams of the different types of cells.

This lesson covers the basic elements of cell theory.

Essay on the history of our knowledge of cells and the development of the cell theory.