bpkbears - Tumblr blog

[bpkbears]

As PhD chemistry retired professor, you did an amazing explanation of cis-trans isomerism!!

You might want to consider a career as a teacher!!

LGBT-chemistry

This is not really an engineering or energy post, but my nonbinary butt was delighted in school a few days ago to learn about this, so I´ll share it with you anyways :D

So, I always wondered where the prefixes "cis" and "trans" came from. And I knew that it was used scientifically, but I never heard it in any other context than gender. Until I was blindsided a few days ago in my chemistry lesson. I don´t know if the terms originated from chemistry, but they sure are used here!

In chemistry, cis and trans are used to describe structural differences in molecules! For example:

This is butane. It has 4 C-atoms and one double bond. Do you see that the hydrogen-atoms and the C-groups branch off of the molecule in the same direction? This one is called cis - 2 - butane!

This is ALSO butane. Also four C-atoms and a double bond between the 2nd and 3rd C-atom. But here, the hydrogen atoms and the C-groups branch off of the molecule in different directions. This one is called trans - 2- butane!

If you write the chemical formula, they both are written C4H8, the only difference is in the positions of the hydrogen atoms and the CH3 groups.

These differences can be very important, for example in biochemistry and carbohydrate-chains, but I learned that literally today, so I don´t dare to say much about it.

Anyways, I found it interesting that cis means that the same group or atom branches off in the same direction, like if your gender and your gender assigned at birth allign, and trans means that they branch off in different directions, but I´m not a hundred percent sure if that is the actual connection here. I still found it very cool, so take it as the fun fact of today! And if a bigot wants to argue that "cis is a slur that trans people came up with"... Nope, it´s not.

[bpkbears]

Cock and more cock for me!!!

[bpkbears]

(via fundoshihairyballs)

Let me ride that beautiful cock!!

[bpkbears]

Now that is a bulge I enjoy in a form of presentation!!

[bpkbears]

Love me a hairy man!!

[bpkbears]

Absolutely Yummie men!!

[bpkbears]

Beautiful hairy chest!!

[bpkbears]

Good eye!! Excellent contrasting!!!!!

by chasingtheshiftinglight

[bpkbears]

Gorgeous man with a gorgeous cock!!

[bpkbears]

Please pass this on!! So close to what we all are living now days!!

Truth does not pay homage to any society, ancient or modern. Society has to pay homage to Truth or die.

— Swami Vivekananda

[bpkbears]

Woof

[bpkbears]

(via kmpmrnasty)

He looks like a cuddle monster!!

[bpkbears]

(via kmpmrnasty)

Love me this big boyz!!

[bpkbears]

(via gayjim1969)

fucking gorgeous man!!

[bpkbears]

Chicken coup?