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Merhaba, Ben Hank

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Biyoloji ile ilgilendiğiniz için

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Burada olduğunuzu varsayıyorum.

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Eğer öyleyseniz bu mantıklı,

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Çünkü herhangi bir 50 Cent şarkısında

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Biyoloji cinsellik veya ölmemekle alakalı

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Ve izleyen herhangi biri cinsellikle veya

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ölmemekle ilgilenebilir. Bu insanca bir şey...

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Ben size biyolojiyi hiçbir kursta

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deneyimlemediğiniz gibi anlatacağım

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Örneğin ilk dersimizde

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dersi nasıl öğreteceğimi anlatmayacağım.

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Direk derse başlayacağım.

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Sadece şu kısımlardan sonra...

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Öncelikle sizlere fazla hızlı gelirsem ki

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bu bana göre iyi, video olmak yani...

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Siz yeniden bunları dinleyebilirsiniz.

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Sizi temin ederim, sakıncası olmaz.

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Bunu ara sıra yapmak sizi cesaretlendirir.

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Çok iyi bir profesör bana;

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Herhangi bir konuyu anlamak için

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her seviyesini sırasıyla öğrenmem

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gerektiğini söylemişti.

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Buradaki karışıklık biyoloji ve kimya;

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eğer bir biyokimyacıysanız

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bunun biyokimya olduğunu iddia edebilirsiniz.

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Yani bizim de biraz kimya bilmemiz gerek,

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işte tam da buradan başlayacağız.

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(lively intro music)

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Ben organik bileşikler koleksiyoncusu Hank Green

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Organik bileşik; az veya çok karbon içeren

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kimyasallardır,

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ve karbon müthiştir.

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Neden mi? Çok sebebi var.

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Size üç tane sebep söyleyeceğim.

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Birincisi, karbon küçüktür.

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Çok fazla protonu ve nötronu yoktur.

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Neredeyse 12, nadiren ekstra nötronlara

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sahip olabilir C-13 veya C-14 yapmak için

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Karbon uzayda fazla yer kaplamaz

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ve her türlü şekle sahip olabilir.

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Halkalar şeklinde olabilir

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İkili hatta üçlü bağlar oluşturabilir

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Spiral ve yaprak şekli alabilir

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ve bunun gibi müthiş şekiller yapar

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daha büyük moleküllerin yapamadığı

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Kısaca, karbon olimpik jimnastikçi gibidir

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Bunun gibi dikkat çekici ve güzel bir çok

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şey yapabilir ufak olduğu için

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İkincisi, karbon kibardır.

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İstediği elektron sayı-

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sına ulaşmak için umutsuzca elektron alıp

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vermek için uğraşmaz. Hayır, kar-

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bon bunu bilir. Bu yalnız olmak gibi."Se-

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nin elektronların olmadan yaşayamam"gibi değil

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Klor veya sodyum buna muhtaçtır.

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Klor gazını içinize çektiğinizde

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gözlerinizin yaşarması ve

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sodyum metalinin yenilince patlaması bu yüzden

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Karbon, gerçi, eh..

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O da elektron istiyor ama elektronlar için ölmüyor.

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Onunla çalışmak kolay.

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O da bağlar yapıyor veya kırıyor,

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fakat o asla kin tutmuyor.

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Üçüncüsü, karbon bağ yapmayı sever.

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Onun 4 ekstra elektrona ihtiyacı var

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ve yakınlarda kim olursa onunla bağ yapar.

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Genellikle, 2'li, 3'lü, 4'lü bağları aynı

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anda yapabilir.

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Karbon birçok elementle bağ

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yapabilir. H, O, P, N...

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ve diğer karbon atomlarıyla.

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Bu şekilde karmaşık sonsuz yapılanmaları,

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