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DNA, Cells and Organisms

Taxonomic Classification: From Domain to Species
DNA, Cells and Organisms | Life Science

Taxonomic Classification: From Domain to Species

In biology, we categorize life by how similar organisms are with each other. Like a family tree, we find relationships by their classification of life.

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What Are the 3 Domains of Life?
DNA, Cells and Organisms | Life Science

What Are the 3 Domains of Life?

We categorize life into 3 domains of life: eukarya, archaea and bacteria. Domains classify life in the most general way such as the presence of a nucleus.

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Cambrian Explosion: Life Diversification in the Oceans
DNA, Cells and Organisms | Life Science | Milestone Events

Cambrian Explosion: Life Diversification in the Oceans

The Cambrian explosion was the largest diversification of life in Earth’s history. Ocean life started as sparse and simple. Then, it remarkably diversified.

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Cellular Respiration Steps: Energy Conversion in the Body
DNA, Cells and Organisms | Life Science

Cellular Respiration Steps: Energy Conversion in the Body

The single-most important biochemical reaction human beings need is cellular respiration. Our cells require oxygen to break down the food and provide energy.

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We Are Made of Stardust from Old Supernovas
DNA, Cells and Organisms | Life Science

We Are Made of Stardust from Old Supernovas

Supernovas are the dying stage of a star when the star explodes. Heavier elements like copper and zinc get flung out into space which we find in our bodies.

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Human Cells vs Bacteria: Microbiota in Your Body
DNA, Cells and Organisms | Life Science

Human Cells vs Bacteria: Microbiota in Your Body

By 10 to 1, colonies of bacteria outnumber human cells. We rely on bacteria because they break down sugars, help digest food and protect against infections.

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DNA Deoxyribonucleic Acid: The Origin of Your Genes
DNA, Cells and Organisms | Life Science

DNA Deoxyribonucleic Acid: The Origin of Your Genes

Your identity is decided by 4 letters of DNA (A, T, G & C). And there’s so much Deoxyribonucleic Acid in your body that it stretches all the way to the moon.

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