@aridani2013

aridani2013

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A l'aide, !! J'ai besoins qu'on m'explique la transmission de l'information génétique svp !! ^^
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J'ai besoins qu'on m'explique le PGCD, toutes les méthodes qu'il y a !!!!  svp ^^C'est urgent !!!!!!!!!!! D:
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A l'aide !!! :S Je veux juste qu'on m'explique qu'est ce que c'est la littérature engagée ! Merci d'avance :)
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Bonjour tout le monde, j'ai vraiment du mal a comprendre le nouveau thème en cours de mathématiques '' Développer et factoriser " Si quelqu'un a le temps de m'expliquer , je le remercierais infiniment !
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Bonjour tout le monde ! J'ai besoin d'aide pour un devoir en math....Je veux juste qu'on me donne la réponse du premier exercices ( avec les étapes) pour faire le reste moi même. Le voici : 1) -2x² + 12x - 14 → Déterminer la forme canonique de cette fonction trinôme. Merci de votre aide !
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Bonjour ! J'ai un DM de mathématiques mais je n'y arrive pas, merci beaucoup d'avance ^^
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Bonjour ! J'ai besoin d'aide pour le II et le III Merci d'avance !
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Bonjour, est-ce quelqu'un peux m'aider ? Merci
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Bonjour ! J'ai besoin d'aide svp ! Merci d'avance !
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Bonjour, j'ai une question : Quelle est la différence entre l'état standard et l'état standar apparent? Et pourquoi l'état standard utilisé en chimie n'est pas une référence significative dans un système vivant? Merci d'y répondre!!
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Bonjour! Je n'arrive pas à faire ce dm quelqu'un pourrait-il m'aider? c'est les questions 1, 2 et 3 de l'activité 4 Merci d'avance!! ^^
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Bonjour ! J'ai du mal avec ce devoir, quelqu'un pourrait m'aider svp? Merci D'avance!
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J'ai pas compris cette 2eme partie, quelqu'un pourrait m'aider svp Merci d'avance!
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Bonjour, j'ai du mal avec ce devoir, quelqu'un pourrait m'aider svp? Merci d'avance ^^ !!
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Bonjour, j'aimerais de l'aide pour ce devoir, je galère beaucoup.. Merci d'avance!!!
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Bonjour, j'aimerais savoir si quelqu'un aurait l'amabilité de me corriger ce texte, s'il vous plait ! J'ai essayé de corriger par moi meme mais je trouve encore qu'il y a des fautes , merci d'avance ! Simpsons is a television series of American animation created in 1987 by Matthew Abram Groening this one been born on February 15th, 1954 in Portland, Oregon, is an American author of comic strip. Staging the daily of a family of the medium class. The first broadcasting took place on December 17th, 1989 on network Fox . The Simpson family is composed of five members: Homer is head of family lover but idler , unthinking, stupid and childish father. He like to watch at television by drinking Duff, its lucky beer.It is also obsessed by the food, notably by pork chops and donuts. He works on the nuclear power station of Springfield as representative for security but crosses his days to sleep. Marge , woman in the home careful . More calm and more thoughtful, she assures a stable with the impulsive side of her husband , not refusant an incursion on the side of madness not from time to time. Bart, small boys of ten old, more interested by stupidity that studies. He plays the worst towers his father and to the staff of its school. Charmer and leader, he is the contrast of her sister Lisa with whom it is often in conflict. It loves making leg-pulls in the Tavern of Moe Lisa, exceptionally little girl of 8 old. Lisa is enthralled of music and play of the saxophone. Environmentalist, Buddhist and feminist, its political firm belief is apparently democratic and rather liberal.Lisa often represents the voice of reason in series, But nobody listens to here because people of its age finds her ringarde.( je pense que la phrase souligné ne veut rien dire? car voici ce que je voudrais dire "Lisa incarne souvent la voix de la raison dans la série, mais elle est rarement écoutée car les enfants de son âge la trouvent ringarde." Maggie, the endless infant of the family. Maggie is one old does not know how to speak, but she is however aware perfectly of all that takes place around her. It also showed a certain talent again and again in the handling of guns >.( ce qui est souligner je n'arrive pas à la traduire je voudrais dire cela :"Elle a également montré à plusieurs reprises un certain talent dans le maniement des armes à feu. ") he family has also two pets: the dog Santa's Little Helper, rather close to Bart, and the cat Snowball, rather close to Lisa. they live in Springfield is a small typically American city, with its grocery, its school, its town hall, its guardhouse, its bar, its shopping centre, its nuclear power station and its Simpsons family. Caricature of the medium American family, Simpsons lives 742 in Evergreen Terrace
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→Bonjour, quelqu'un pourrait-il corriger rapidement les fautes d’orthographe s'il vous plait ? Je vous remercie d'avance ! Our project consists of take fruits containing latex to study it and their laticifer cells. For this we used a green papaya, a jackfruit, a breadfruit, a sapote and a caimito. The goal of this is to know if there are differences of rubber in some fruits than the rubber used to make condoms or chewing gum. For the first experience we used the microscope with normal light and taken some photos with an app installed in the computer and the professional camera connected to it. We had to grab 20 μL of latex of each fruit and put it in microscope slides, we placed it in the stage and we choose an ocular adapted Then, we have succeeded to seen the particles of each fruit but they were excited and they're moved everywhere, that's the brownian motion, is the random motion of particles suspended in a fluid (a liquid or a gas) resulting from their collision with the fast-moving molecules in the fluid. After that, like we know, biological samples often need to be solidified to allow fine sectioning. Thin slices improve the access of dyes, probes, and antibodies and reduce the overlay of different cells layers. For light microscopy, paraffin wax is the most frequently used hard matrix for cutting.Here we used a embedding cassette, they are used in conjunction with conventional stainless steel covers. High-density material helps prevent floating and is resistant. We have to heat paraffin to liquify, put the sample (in this case the piece of fruit) in the cassette, we pour the paraffin inside, then put the steel cover and finally we can put it in the fridge. We wait around 2 days for the solidification of paraffin. Paraffin sections for light microscopy are typically 5 μm thick but here we used 8 μm. Paraffin wax does provide a sufficiently hard matrix for cutting thinner slices needed for epifluorescence microscopy. We does that with a microtome, is it, we a tool used to cut extremely thin slices of material, known as sections. So, we can see the laticifers cells inside fruits with the epifluorescent microscope. For use this microscope, we need to used the mercury lamp, and like his name say need to have a fluorescent substance. In this case we used the fluorophore (A fluorophore is a fluorescent chemical compound that can re-emit light upon light excitation) Nile Red, is used to localize and quantitate lipids, particularly neutral lipid droplets within cells, So, we can say this chemical substance gets into the hydrophobic part of the cell for just can see the laticifer cells and not the water who are inside fruits.
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