Sorry, I don't know any. It wasn't too difficult to find. I would just type in some reaction or something, and there would be a video with a professor explaining it.
Also, if you do find a good one, check to see if they have other videos posted.
Both are pretty good resources and free although I wouldn't rely 100% on these for the DAT....Good for supplementing biology/chem/orgo textbooks if you need a little extra umph.
i used these for plants, they were great but too bad the 2 plant questions i had on my exam were so ridiculously easy that i essentially wasted time studying for it. Bio is a crapshoot 🙁