Télécharger ici le sujet du BAC 2015 terminale S Accéder à la page de révisions BAC SVT Page de révisions BAC S SVT
Les Sciences de la Vie et de la Terre au collège et au lycée. Découverte, actualité, cours, aide et soutien en ligne.
Télécharger ici le sujet du BAC 2015 terminale S Accéder à la page de révisions BAC SVT Page de révisions BAC S SVT
Des épines de hérisson, des plaques dermiques de pangolin, les pattes fouisseuses et la colonne vertébrale du tatou… Si l’animal découvert en Espagne peut bien ressembler, au premier regard, à un jeune rat – 50 à 70 g, 25 cm –, c’est de tout autre chose qu’il s’agit. D’une nouvelle espèce, susceptible de revisiter l’histoire du poil et des épines
Découvrez une pédagogique innovante …
Chronique SVT sur Zénith FM : les signes d’automnes Qu'est ce que l'automne ?envoyé par vive-les-svt. – Regardez les vidéos des stars du web. Plus d’informations sur la fiche SVT spéciale automne Retrouvez Jérémy sur son blog.
Depuis quinze ans, plusieurs équipes dans le monde tentent d’obtenir des spermatozoïdes à partir de tissus prélevés sur le corps d’hommes infertiles souhaitant avoir un enfant biologique. Ce jeudi 17 septembre, des chercheurs de la start-up Kallistem (link is external)1 ont annoncé officiellement y être parvenus ! « Pour la première fois, nous avons réussi à obtenir en cultures cellulaires
Accéder aux ressources pédagogiques
Est-il le chaînon manquant ? L’Homo naledi, découvert dans une grotte d’Afrique du Sud, pourrait être un trait d’union entre le genre Homo et celui des australopithèques. Il s’agirait d’une « nouvelle espèce du genre humain » selon les paléontologues qui l’ont présenté au public jeudi 10 septembre et qui l’ont classé dans le genre Homo, auquel appartient l’homme moderne sous l’appellation
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