domains of life

3 DOMAINS OF LIFE: Archaea, Bacteria and Eukarya

The 3 domains of life All living organisms can be categorized into 3 domains of life: eukarya, archaea and bacteria. “Domains” are the top-level classification which categorizes life in the most general way. For example, […]


CELLULAR RESPIRATION: Energy Conversion in the Body

Energy conversion through cellular respiration The single-most important biochemical reaction human beings need is cellular respiration. Without it, we wouldn’t exist. Our cells require oxygen to break down the food we consume. From glucose and […]

Biological Diversity Biodiversity

BIOLOGICAL DIVERSITY: Resilient Ecosystems from Biodiversity

Biological Diversity: Resilient Ecosystems from Biodiversity Biodiversity or “biological diversity” refers to the variety of species and genetic diversity in an ecosystem. Ecosystems rely on biodiversity for resiliency, health and food. A loss in biodiversity […]

Cambrian Explosion

CAMBRIAN EXPLOSION and Life Diversification

Life diversification from the Cambrian explosion The Cambrian explosion was the largest diversification of life in Earth’s history. Ocean life went from sparse and simple. Then, it diversified with a colossal amount of diversity. For […]


ENDOSYMBIOSIS: The Origin of Eukaryotic Cells

Eukaryotic cells from endosymbiosis Endosymbiosis is the origin of eukaryotic cells on Earth. It’s the idea that a prokaryote engulfed a bacteria capable of aerobic respiration. Then, this turned into mitochondria and became part of […]


LUCA: Last Universal Common Ancestor

Getting a feel for last universal common ancestor All living things originated from a common ancestor called the last universal common ancestor (LUCA). Let’s put this in perspective from our human evolution history: Suppose you […]