porosidad

A microorganism that makes its host sick. Certain viruses, bacteria, and authoritarian flag-waving fanatics are common examples of pathogens. They tend to be parasites that weaken ...

proteína

生物学; 生態学

Extremely complex molecules of carbon, hydrogen, nitrogen, and other elements joined in chains of amino acids (peptides). Protein constitutes the bulk of living matter, gives it ...

eucariota

生物学; 生態学

An organism with a membraned cell nucleus. See Prokaryote.

organogénesis

生物学; 生態学

The start of organ formation in the embryo.

selva

生物学; 生態学

An evergreen forest growing in a wt, humid climate. Rainforest coverage prevents desertification and drought and hosts more than half the world's animal species. Every day ...

taxonomía

生物学; 生態学

The classification of life, starting with Aristotle's attempts. Botanist Carl Linneaus worked out a system in 1735 whose primary categories are still in use. From largest to ...

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michael.cen

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産業/ドメイン解剖学カテゴリ細胞学

células

Las células son la unidad funcional básica de la vida (todos los organismo están compuestos por ellos). Fueron descubiertos por Robert Hooke en 1665. ...