Correction at 10:40: the 14C isotope is actually made by cosmic radiation (protons and atomic nuclei) that strike atoms already hanging out in the Earth's atmosphere. These collisions release neutrons from the atoms that were hanging out, and those neutrons combine with 14N to create 14C, liberating a proton from the 14N. Just to be clear, this is totally outside the scope of the MCAT, but nevertheless some really cool science! For more information, check out this great source: www.radioactivity.eu.com/site/pages/RadioCarbon.htm#:~:text=Carbon%2D14%20is%20continuously%20generated,carbon%2D14%20(B).
First I wanted to thank you for your videos as they are super helpful and you explain things really well! Not that it's important for the material, but I just wanted to point out that A.D. stands for anno domini and starts after the birth of Christ, not after the death of Christ.
Since we are looking at 10,000 BC, that means we have 10,000 years before year 0. We live approximately in the year 2000, so we add 2000 years to get 12,000 years! In other words, 10,000 BC was around 12,000 years ago.
hey, I tried using your link for the amino acid page but it just bring me to a bing server. How could I access it? Thank you so much brotha you a dawg with these mcat vids
