Serotonin and Melatonin Sketch

In the late night I was doodling, and sketched Serotonin and Melatonin almost out of desperation, to give an idea of what they might look like. The sisters, one neurotransmitter and one hormone, are both important for humans, especially in the sleep and biorhythem cycle. They are probably the nicest Tryptamines ever. lol

Serotonin Tryptamine, or Sera

She is the reason why a lot of other Tryptamines are psychedelic. It kind of means our brain can't distinguish Sera from her first cousin DMT ... and others. That's funny. LOL

Melatonin Tryptamine, or Mel

Melatonin always wears sunglasses, to prevent sunlight shines directly into her eyes when she has to look up at the sun but she actually doesn't like sunlight. This is the very first time I attempted to draw Mel, by the way.

The clothes of Serotonin and Melatonin are still sort of undecided.  Serotonin's hair is of a medium color, while Melatonin's is a bit darker.

Phytohormones 4+1

We are going through those plant hormones in biology class so I think it'll be fun if I draw them. Plus, it's "sort of" requested by my botany professor when I told him I'm personifying some molecules.

Biology + chemistry is awwesoooomme!! I'd love to have them as characters even without any story. Here's the sketch of how they might look. What do you think?

Indole-3-Acetic Acid

I have no reason to draw this molecule first, but we're learning plant biology in Biology 152 recently.
So this is Indole-3-Acetic Acid (IAA), who looks a little bit like my botany professor. ^ ^
He is not one of the drug molecules, but a plant hormone.

  

His greatest ability is to make plants grow roots, and then they'll grow new shoots.

Each of the four pockets on his shirt is full of different kinds of seeds.

If nothing changes my original character description, he's French!

He's also a distant relative of the Tryptamines.