@@andrewjustin256Sometimes you learn something in high school that you will also learn in university but in more depth. Therefore, the answer to your question is yes, we do learn this in college but the material is way more detailed. It also depends on your major, for example, as a chemical engineering major I don’t need to know as much as a biology student.
I have had many lectures in biochem concerning this topic. I leaned more in this 13 minute video than many hours of lecture. The hand-drawn molecules are really well done too. Thank you for your generosity.
At first glance the study of human anatomy seems to bo extremely complicated. It's true that it's not simple and your studies wont change that. As for it being overwhelming, that can be eleviated if you take your study one step at a time. I found an article on Sebs Study Crammer very helpful for this.
I signed in just to tell you how awesome you are and how much of a help these videos are. Keep up the good work and know that everyone here appreciates your efforts.
This was the most efficient video I have ever seen, everyone taking biochemistry needs to know about your channel. Thank you. I will try to spread the word.
I literally sat for hours and for like about 4 sessions with many people trying to understand the session about haemoglobin. If only I saw this vdeo before!! Awesome job mate keep it up. We, strudents of University of Kufa, College of Medicine watch your videos whenever there is one concerning a topic we're studying.
This guy is the real MVP. What a gem! You sir are very skilled at your craft. You make complicated concepts seems so simple. What a great explanation. Thank you!
Sitting in my biochem class watching this video and looked up in front of me another student is watching AKL as well. We both will do great on this part.
You're saving my ass in biochem! You break these topics down into their fundamental aspects and make it so easy to understand. Way more effective than reading from a book cluttered with horrible examples and round about language. Keep it up! I'll be tuning in for MCAT prep for sure.
Thanks million times, you are amazing. I have been watching your videos for different topics. very precise, clear, simple and beneficial. Thanks again.
When you read this so many times from your college book and still facing troubles with fully understanding the topic, So you head to here and finally realize how simple that was, here's hits dopamine
Your videos are absolutely incredible! It's amazing that you're able to take the most relevant and important topics of each subject so that we're better equipped with understanding lecture, no matter who the lecturer/how the class is taught
Andrey, you've truly got a talent for teaching. I've used your content for many classes, including biophysics, optics, biochemistry, etc. You have always immediately and substantially improved my understanding of the content. I couldn't do this without your help. You're much appreciated. Best wishes.
The iron atom at the centre does not have a +6 charge. It has a +2 charge to begin with. The reason why the iron atom makes bonds with the nitrogens and oxygen is that it is a transition element and forms 6 hybrid orbitals (empty) around itself ( complex formation in transition element ). So now 4 nitrogens from the protoporphyrin. 1 nitrogen from histidine and 1 oxygen molecule make coordinate covalent bonds with the Fe2+. I don't also agree with the reasoning that iron moves because oxygen is more electronegative. Oxygen makes a coordinate covalent bond with iron. (It gives electrons). It would really be helpful if you could clarify this.
Sir your lectures are very explanatory and ssly u cleared my doubts which I found after reading notes. I could understand it by creating good imaginations. So thank you so much sir.
Super helpful! Thanks for making the videos. Only request (take it or leave it) is that if your videos are in series, could you number them? I stumbled upon one in my desperate google search and would have loved to have realized there was a whole series, because these are GOLD (either stand alone or in a series I might add). Either way, thanks for making the videos and keep it up. I've already shared them with some of my classmates!
Has an oxidation state of 2+ because it contains only 6 electrons out of the 8 valence, not because it can have 6 bonds but only has 4. if that were the case, than the oxygenated heme in hemoglobin, the iron atom contained would have an oxidation state of 0 which is experimentally untrue (it has oxidation state of 3) this is because it undergoes a redox reaction with molecular oxygen forming the superoxide ion and the Iron 3+ ion.
Thanks for the video! Do you mind explaining how the formal charges were assigned for the iron-oxygen complex? For example, why wouldn't the O attaching to Fe ion have a charge of +1 (a double bond, a single bond and a lone pair)?
