Quotes about Molecules

You must have carbon. Arsenic, boron, and silicon are the only other elements on which complex molecules can be based, but arsenic and boron are relatively rare and, where concentrated, poisonous to life, and silicon can hold together no more than about a hundred amino acids. Only carbon yields the chemical bonding stability and bonding complexity that life requires. Given the constraints of physics and chemistry, we now know that physical life must be carbon-based.

I'm aware there are certain products that are being advertised - food products - with 'no chemicals whatsoever.' Well, that would be pretty hard to arrange, since everything around us is made up of atoms and molecules - chemicals - including ourselves.

There are receptors to these molecules in your immune system, in your gut and in your heart. So when you say, 'I have a gut feeling' or 'my heart is sad' or 'I am bursting with joy,' you're not speaking metaphorically. You're speaking literally.