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.

Enzymes are among several diverse groups of chemicals that participate in the metabolic pathways that keep the cell alive.

The cell perpetuates itself with a variety of organelles, metabolic pathways, and biochemical subsystems.

A brief introduction to the cell, including its structure, physiology, metabolism, and replication.

The lipids are fundamental building blocks of life, as they can store energy for the long-term, and they compose the cellular membrane.

The carbohydrates are carbon-rich molecules that can do many things, from storing energy, to supplying carbon atoms for molecular synthesis.