Tutorial with animated illustrations showing how vesicles work to transport materials inside a cell and release them through the cell's membrane to the outside.

Explains what lysosomes are, the different functions they perform in a cell, and what can happen when they become dysfunctional.

Discusses the discovery of centrosomes, their important role in mitosis in animal cells, and their other functions.

A brief discussion of the discovery of the mitochondrion, as well as its functions.

Describes the structure and functions of the mitochondria.

Describes the structure and functions of the mitochondria.

Discusses the structure of the matrix inside a mitochondrion and how hundreds of concentrated enzymes are held there. The matrix takes part in mitochondrial functions such as the Krebs cycle, the electron transport chain, ATP synthesis,...

Explains what the cell nucleolus is, its functions, and its structure.

Describes the characteristics of vesicles and the functions they perform in a cell based on which type they are.

The characteristics and functions of the Golgi apparatus are described.

The structure and functions of the Golgi apparatus are described. Includes a list of interesting facts.

Describes the composition and functions of cell walls in plants, algae, fungi, and bacteria.

Discusses the discovery of the cell nucleus, its location, size, structure, composition, and functions.

Explains the functions of the nucleus in a cell.

Presents information about lysosomes and offers analogies to help students recall their functions in a cell.

Explains what vacuoles are and what their functions are in animal cells and plant cells, and offers analogies to help students understand their different roles.

The structure and function of a vacuole inside a plant cell are described.

Presents information about vacuoles and offers analogies to help students recall their functions in a cell.

Information about the functions vacuoles perform in different types of organisms.

The parts of a cell nucleus are described along with a list of the functions of a cell nucleus.

Presents labeled illustrations of a plant cell and an animal cell which demonstrate the parts that are common and different. This is followed by a discussion of their similarities and then of their differences.

Describes the different parts of a plant cell.

Describes the functions of a cell and the many parts involved in those functions.

The endoplasmic reticulum is found in eukaryotic cells. The characteristics and functions of the smooth endoplasmic reticulum are described and it is then compared with the rough endoplasmic reticulum.