Using the signal transduction pathway for the cholera toxin to understand activation and inhibition. [5:55]

Learn how homologous chromosomes separate into two sets during prophase I, metaphase I, anaphase I, and telophase I. [9:44]

Comparison of the processes of mitosis and meiosis. Mitosis produces two diploid (2n) somatic cells that are genetically identical to each other and the original parent cell, whereas meiosis produces four haploid (n) gametes that are...

Introduction to the cell. [5:51]

Introduction to cell theory including roles of Hooke, Leeuwenhoek and others in its development. [8:02]