A brief introduction to evolution, including its mechanisms, selective pressures, runaway effects, and the fundamental importance of evolution as a guiding force for the perpetuation of life.

Genetic information is complex; there's the gene sequence, the regulation of gene expression, and there are even mechanisms to modify genes, allowing a single gene to produce multiple different proteins.

The gene itself encodes raw information, but this is just the beginning of gene expression, which is a complex, highly-regulated, and tightly-coordinated process.

New DNA molecules are generated through a complex replication process, and mutations can be repaired with a variety of mechanisms.

The genome encodes information to 'build' the organism; the process of transcription encodes the DNA information into RNA, and translation encodes the information into polypeptide chains, which form proteins.

Meiosis is a specialized form of cellular replication, which creates many haploid daughter cells, each possessing a single copy of the genome.

A brief introduction to genetics, including the structure of DNA and RNA, gene expression, genome replication, and more.

As organisms a born, grow, reproduce, and die, so too do cells. The cell cycle is the pattern of cellular growth & replication that sustains life.

The cell is one among many; all cells in a tissue, or an organ, or an organism, have relationships with other cells, and these relationships help to sustain life.

Cellular respiration is a perpetual cycle of energy generation that sustains not just the cell, but the life of the organism it's a part of.