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A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

ScienceOne small ahaBiology concept

These biological catalysts speed up reactions such as food digestion.

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Your new ahaEnzymes

Enzymes speed reactions by lowering activation energy. Source: Enzyme ↗

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More from From Cells to Species

A few more worth knowing.

  1. 26Grass to rabbit to fox: this sequence traces energy passing between feeding organisms.RECALL
    Food Chain

    A food chain traces how energy passes from one organism to the next, as grass feeds rabbits that feed foxes.

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  2. 27Preserved remains or traces of ancient life.IDENTIFY
    Fossil

    Fossils preserve remains or traces of ancient life across long geological timescales, like dinosaur bones in rock layers.

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  3. 28A caterpillar becoming a butterfly illustrates this developmental transformation.RECALL
    Metamorphosis

    Metamorphosis transforms an animal's body form during development, most famously a caterpillar becoming a butterfly.

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