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13:37
Khan Academy
Sal Khan
Khan Academy
La photosynthèse est essentielle à la vie sur Terre. Elle comporte deux étapes : les réactions dépendantes de la lumière, qui nécessitent de la lumière naturelle et de l'eau pour produire de l'oxygène, de l'ATP et du NADPH, et les réactions indépendantes de la lumière (cycle de Calvin), qui utilisent les produits des réactions ...
Oct 5, 2017
Biologie Cellules
4:16
Organisation des organismes pluricellulaires
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3 weeks ago
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Théorie cellulaire (vidéo)
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Oct 5, 2017
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Les solutions hypotonique, isotonique et hypertonique (la tonicité) (vidéo)
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Oct 5, 2017
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