Examlex
Among the functions of the plasma membrane are to form specialized intercellular connections,provide for selective permeability,and facilitate the recognition and response to molecular signals.
Ancestors Of Amphibians
Early vertebrates from which modern amphibians are descended, likely evolving in the Devonian period.
Lobe-Finned Fish
Jawed fish with fins supported by internal bones; for example, a coelacanth or lungfish.
Homo Habilis
An extinct species of early human that lived approximately 2.1 to 1.5 million years ago, recognized for its use of stone tools.
Stone Tools
Prehistoric tools made from stone by early humans for cutting, scraping, and other activities.
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