L'apparato di golgi è un centro di elaborazione di molecole complesse che vengono poi avvolte in vescicole e trattenute nella cellula stessa o esportate.

I batteri sono cellule procariote; queste cellule sono prive di membrana cellulare e possono vivere anche negli ambienti più estremi.

La parte fluida del citoplasma, il citosol, è una soluzione di ioni, piccole molecole e grosse proteine; nelle cellule eucariote metà del citoplasma è costituito da piccole strutture chiamate organuli.

Tutte le cellule sono rivestite da una membrana cellulare, formata da un doppio strato fosfolipidico; le cellule vegetali hanno anche una parete rigida costituita da cellulosa.

Le cellule Eucariote: hanno dimensioni limitate per favorire il rapporto superficie/volume e rendere le cellule metabolicamente attive.

Il nucleo, avvolto da una doppia membrana dotata di pori per poter comunicare col citoplasma, contiene il DNA sotto forma di cromatina e un nucleolo che assembla i ribosomi.

Il citoscheletro mantiene la forma della cellula, fissa gli organuli, dirige il traffico interno e le consente di muoversi; è formato da filamenti di actina, microtubuli e filamenti intermedi.

Ciglia e flagelli sono formati da filamenti proteici; servono per il movimento.

Il vacuolo è una cavità citoplasmatica contenente acqua e soluti, delimitata da una membrana; le vescicole con funzione di trasporto, sono piccole e hanno una struttura uguale al vacuolo

Il reticolo endoplasmatico è costituito da un sistema di membrane; il reticolo rugoso ricoperto di ribosomi da ribosomi sintetizza le proteine e il reticolo liscio sintetizza soppratutto lipidi.

I lisosomi sono vescicole che racchiudono gli enzimi coinvolti nelle reazioni di idrolisi, i proteasomi sono specializzati nel demolire proteine per riciclare amminoacidi, i perossisomi contengono diversi enzimi ossidativi.

I cloroplasti svolgono la fotosintesi clorofialiana ; nei mitocondri, invece, avviene la respirazione cellullare.

I ribosomi sono sono siti presso cui vengono assemblati gli amminoacidi per la sintesi delle proteine.

Everything I know about morality and the obligations of men, I owe it to football (soccer)

I like to know where the camera is.

I was sent to a finishing school, which didn't last long when mother found out how badly chaperoned we were. Then I 'came out' before going to a domestic science school.

I don't try to be someone I'm not - I've always followed my heart and trance has always been my main sound.

I've lived in L.A. for a long time, and they say, 'If you sit in a barber's shop for long enough, you will get a hair cut.' Well, if you live in Los Angeles for long enough, you're going to get some surgery.

Naturally, Brie and I bicker, like, every 10 minutes about everything in life.

Every country is like a particular type of person. America is like a belligerent, adolescent boy; Canada is like an intelligent, 35-year-old woman. Australia is like Jack Nicholson. It comes right up to you and laughs very hard in your face in a highly threatening and engaging manner.

The desire to impress others is one of the worst forms of mental imprisonment.

You work on an idea, your first interpretation is very raw and you work it and you work it and it gets polished and polished. It gets to a certain level and then it comes down off that peak.

Connectivity just can't be a privilege for people in the richest countries. We believe that connecting everyone in the world is one of the great challenges of our generation, and that's why we are happy to play whatever small part in that that we can.

I like doing roles that stretch me.

As the possessor of complete knowledge, God is not mistaken about people's experiences as people are mistaken about each others' experiences.

I'm pretty rough on my laptops. I go through about two a year.

My music is not just about entertainment. It is about enlightenment also.

I mean, look how many musicians have come through and played beside me, and I'm workin' and they're not.

What started it all was the Kanye album, 'My Beautiful Dark Twisted Fantasy.' We started listening to that and just fell in love with it, fell in love with his production style.

I will stop being so irritable when people stop being so irritating.

They wanted me to play more sports because they were acutely sensitive to their children being one hundred percent American, and they believed that all Americans played sports and loved sports.

Russians really needed a product that would be not as strong as vodka and not as feminine as cheap sparkling wine, so Martini was a good solution.

It is the nature of ambition to make men liars and cheats, to hide the truth in their breasts, and show, like jugglers, another thing in their mouths, to cut all friendships and enmities to the measure of their own interest, and to make a good countenance without the help of good will.

Monday? It’s not bad. Begin this day with a grateful heart and do what you love.

I suppose my formula might be: dream, diversify and never miss an angle.

I knew I wanted to act, and I was really driven, so I kept going for it. We moved to L.A. full-time when I was 8 or 9.

It is up to us to live up to the legacy that was left for us, and to leave a legacy that is worthy of our children and of future generations.