Learn about cell theory in this article. [12:29]

An article reviewing the structure of eukaryotic cells. Learn how the cells have a nucleus, organelles, and chromosomes.

Review over characteristcs of cella specifically prokaryotic cells in this article.

An article reviewing how energy flows in a cell including metabolic pathways.

The cell membrane is one of the great multi-taskers of biology. It provides structure for the cell, protects cytosolic contents from the environment, and allows cells to act as specialized units. Learn how the membrane functions to...

This article illustrates the properties of cell division in prokaryotes and eukaryotes.

An illustrated overview of the structure and function of the cell and its structures.

This article helps students identify the scientists that first observed cells.

A site about cell division and the cell cycle in the science of biology including mitosis, meiosis, and binary fission.

Students will be able to identify two ways that molecules and ions cross the plasma membrane.

Students will be able top clarify the relationship between breathing and cellular respiration.

Discover new knowledge about molecular biology- how molecules fit together as a lock and key. This has given researchers new diagnostic tools that use immune cells from mice to produce antibodies to detect a specific virus or bacterium.

Students learn to identify the type of cells that make up nervous tissue.

An illustrated article which helps students understand the levels of organization of the human body.

Researchers are considering more recent findings of eukaryotes and their phylogeny. Investigate the insights to understand that there may be more progress found in determining the relationships to other eukaryotes.

Viral genomes are the fastest evolving entities in biology, mainly because of their short replication time and the large quantity of offspring released per cell infected. Evolution occurs by several mechanisms: Random mutation,...

The aim of this article is to relate the history of oxygen in the atmosphere to the evolution of photosynthesis, aerobic respiration, mitochondria, and life on earth.