I4Vhagar

I4Vhagar t1_j3ftven wrote

Lex Friedman had an evolutionary biologist on his podcast, sometime in the last few months. The way he explained it was that the accumulation of simple mechanisms trend towards the more complex mechanisms via gradients, electron affinity, etc. I believe it was with Michael Levin, but I can’t play the audio to confirm right now.

I’ve had the opportunity to work with quite a few patients that were born with anatomical structures where they shouldn’t be or oriented abnormally (e.g. Apert syndrome and dextrocardia). It’s fascinating stuff from a biological standpoint.

3

I4Vhagar t1_it53m04 wrote

Aren’t certain types of bacteria more resistant based on their cell membrane composition? Like gram-positive vs gram-negative or acid-fast bacteria?

Not saying they’re immune but stain retention after ethyl alcohol washes would indicate its membrane is less permeable with regards to ethyl, right? iirc the thickness of the layer peptidoglycan in gram-positive cells allows for simple stain retention; mycolic acid in acid aids in stain retention after acid-alcohol washes

5