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Newsletter 12 : ICI

pré examen QCM 33

Supporteur(s): Généthilde
Abonné(s): mammoniac, Hugosome, Jadouliprane, Généthilde

pré examen QCM 33

Messagepar mammoniac » 23 Avr 2023, 15:25

Coucouu !! :clap:

merci beaucoup pour le dm pré examen !

QCM 33 : À propos des liaisons dipolaires, indiquez la ou les proposition(s) exacte(s) :
A) Elle se forme entre un ion et un dipôle
B) Elle se forme entre deux groupement électro-attracteurs
C) Elle se forme entre deux dipôles
D) Elle implique les chaines latérales électro-donneuses des acides aminés
E) Elle met en jeu des liaisons polarisées


je ne comprends pas pourquoi les items BD sont comptés V, ils concernent les liaisons de Van der Waals non ?

cf la ronéo
Capture d’écran 2023-04-23 à 15.23.22.png



mercii pour ton aide :vador:
:chaton:TUTRICE DE LA SAINTE PHYSIO 2023-24 :chaton:
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Re: pré examen QCM 33

Messagepar lucie valleray » 24 Avr 2023, 14:42

+++
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Re: pré examen QCM 33

Messagepar Patafelix » 24 Avr 2023, 20:08

Coucouuuu, question complexe, ça à pas été évident de trouver la réponse, mais voici ce qu'à dit le tuteur de pharma de l'année dernière : https://www.carabinsnicois.fr/phpbb/vie ... re#p743444

Je pense que l'on peut étendre son explication aussi pour "Elle implique les chaines latérales électro-donneuses des acides aminés"

Bon courage pour le dernier jour <3
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Re: pré examen QCM 33

Messagepar Jadouliprane » 25 Avr 2023, 11:48

Salut !

Est-ce qu'il ne faudrait pas plutôt dire entre un groupement "électro donneur" et un groupement "électro attracteur" pour que ce soit vrai, au lieu de 2 groupements électro attracteurs ?

Merci ! :)
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Re: pré examen QCM 33

Messagepar Patafelix » 25 Avr 2023, 17:43

Non tkt ça passe comme ça, après c'est un parti pris de ma part, ça se trouve j'ai faux mais bon je me fie au tuteur de l'année dernière !!
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