Généralités: - Cytosquelette s’étend dans la cellule de la membrane plasmique jusqu'au niveau de la face interne du noyau. - Composé de trois structures protéiques: microfilaments d’actine, filaments intermédiaires et microtubules.

MICROFILAMENT D'ACTINE Structure: - globulaire (actine G) - sillon chargé négativement ==> lien avec ATP - plus petit diamètre (5-8nm)

FILAMENT INTERMÉDIAIRE Structure: - filamenteux ATTENTION, les monomères sont variables selon les cellules.

MICROTUBULES Structure: - globulaire - tubuline alpha et beta. - association avec GTP - plus grand diamètre (25nm)

There's probably been very few people in comedy that have a diversified background as I do.

The first time I worked with colors was by making these mosaics of Pantone swatches. They end up being very large pictures, and I photographed with a very large camera - an 8x10 camera. So you can see the surface of every single swatch - like in this picture of Chuck Close. And you have to walk very far to be able to see it.

The greatest danger of bombs is in the explosion of stupidity that they provoke.

Believing everyone is dangerous, but believing nobody is more dangerous.

During the election in 1989, there was the first Soviet election with alternative candidates to local government. I myself arranged special training for them.

In Ethiopia, food is often looked at through a strong spiritual lens, stronger than anywhere else I know. It's the focal point of weddings, births and funerals and is a daily ceremony from the preparation of the meal and the washing of hands to the sharing of meals.

I left Colombia because Univision brought me to the United States.

Too often, teachers assume that they are introducing a book or concept to students for the first time. In fact, many units are repeated over the course of a student's K-12 experience.

If a slave is unwilling to go with his new master, he is whipped, or locked up in jail, until he consents to go, and promises not to run away during the year.

But human beings fall easily into despair, and from the very beginning we invented stories that enabled us to place our lives in a larger setting, that revealed an underlying pattern, and gave us a sense that, against all the depressing and chaotic evidence to the contrary, life had meaning and value.

It is books that teach us to refine our pleasures when young, and to recall them with satisfaction when we are old.

It shows courage, and it shows commitment to move beyond the status-quo politics of rhetoric, which is all the Cuban-American community has received from any party for the last half century.

I don't know whether it's audiences or filmmakers who want characters to be likable today, but I don't think actors are afraid of their characters being unlikable.

Violence is a problem we all want to solve. I want to make sure that kids learn to deal with anger by learning how to talk with people to solve problems. Here in the United States Senate I want to make sure we have safe schools, safe neighborhoods and good things for kids to do after school!

There are so many different camps about what being gay means. The danger comes when each one is so rigid that it sees itself as the true picture.

I can write a program that lets you break the copy protection on a music file. But I can't write a program that solders new connections onto a chip for you.

The surveillance of ordinary people is far greater than I would have imagined and far greater than the American public has been able to debate.

We do stigmatise teens a lot and see them as scary and alien.

I was at home then in the world of figures, but not in that of values.

Life can't defeat a writer who is in love with writing, for life itself is a writer's lover until death.

It is the evening that questions thus from within me

At the root of many a woman's failure to become a great cook lies her failure to develop a workmanlike regard for knives.

I'm the one that's got to die when it's time for me to die, so let me live my life the way I want to.

I grew up in a food-obsessed Italian family, so food was always front and center in my life. I was a food obsessed person who morphed into a comedian and tried to figure out a way to make fun of my cake and eat it too.