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DebunkedThe PolygraphThe instrument popularly called a lie detector, which records breathing, blood pressure, pulse and skin conductance dur…

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The library

Capsules

1,028 capsules, each one classified by the strength of its evidence.

All1,028Fact599Proven130Theory89Hypothesis71Contested90Debunked48
geography236biology88physics67history54medicine45astronomy33psychology26mathematics26chemistry20engineering20astrophysics19neuroscience19anthropology18art18
Filtered byFactbiochemistryClear all

Results

Showing 1 to 7 of 7

NewestMost votedA to Z
biochemistry
Fact

Hormones

Chemical messengers released into the bloodstream by one tissue to act on another. They coordinate processes across the whole body over minutes to…

byCapsule
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molecular biology
Fact

Cell Membranes

The boundary enclosing every cell, formed from a double layer of lipid molecules with proteins embedded in it. It defines what is inside the cell,…

byCapsule0 votes0 reviews
biochemistry
Fact

Lipids

A class of biological molecules grouped by not dissolving in water. They store energy, form the boundaries of every cell, and act as signalling…

byCapsule0 votes0 reviews
nutrition
Fact

Carbohydrates

A class of molecules made of carbon, hydrogen and oxygen, comprising sugars, starches and fibre. They are the main energy source in most human diets…

byCapsule0 votes0 reviews
biochemistry
Fact

Metabolism

The complete set of chemical reactions that sustain a living organism. It extracts energy from the environment, builds and maintains structures, and…

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biochemistry
Fact

Proteins

The molecules that carry out most of the work in a cell. They are built from a common set of twenty amino acids, and what each one does is determined…

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medicine
Fact

Insulin

The hormone that allows cells to take up glucose from the blood. Its discovery in 1921 turned type 1 diabetes from a fatal disease into a manageable…

byCapsule0 votes0 reviews