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A LITTLE SOMETHING WORTH KNOWING

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ScienceOne small ahaBiology concept

This regulatory process maintains stable internal conditions, such as body temperature.

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Your new ahaHomeostasis

Homeostasis maintains internal conditions within workable ranges. Source: Homeostasis ↗

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More from From Cells to Species

A few more worth knowing.

  1. 12These single-celled prokaryotes occur nearly everywhere and include many familiar microbes.RECALL
    Bacteria

    Bacteria are single-celled organisms found almost everywhere on Earth and rank among the earliest forms of life.

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  2. 13These infectious agents require host cells to reproduce.RECALL
    Viruses

    Viruses cannot reproduce alone and must hijack a host organism's cells, as the common cold virus does.

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  3. 14These cells can renew themselves and develop into more specialized cell types.RECALL
    Stem Cells

    Stem cells can develop into many different cell types and are used in medicine to repair damaged tissue.

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