Electron transport Chain (ETC) |Cellular respiration|
HTML-код
- Опубликовано: 21 дек 2021
- The electron transport chain is a collection of molecules embedded in the inner membrane of the mitochondrion in eukaryotic cells.
Most components of the chain are proteins, which exist in multiprotein complexes numbered I through IV. Electrons acquired from glucose by NAD+ during glycolysis and the citric acid cycle are transferred from NADH to the first molecule of the electron transport chain in complex I. This molecule is a flavoprotein, so named because it has a prosthetic group called flavin mononucleotide (FMN). In the next redox reaction, the flavoprotein returns to its oxidized form as it passes electrons to an iron-sulfur protein (Fe⋅S in complex I), one of a family of proteins with both iron and sulfur tightly bound. The iron-sulfur protein then passes the electrons to a compound called ubiquinone (Q). This electron carrier is a small hydrophobic molecule, the only member of the electron transport chain that is not a protein.
Most of the remaining electron carriers between ubiquinone and oxygen are proteins called cytochromes.
The electron transport chain has several types of cytochromes, each a different protein with a slightly different electron-carrying heme group. The last cytochrome of the chain, Cyt a3, passes its electrons to oxygen, which is very electronegative. Each oxygen atom also picks up a pair of hydrogen ions (protons) from the aqueous solution, neutralizing the -2 charge of the added electrons and forming water.
Another source of electrons for the transport chain is FADH2. FADH2 adds its electrons to the electron transport chain from within complex II, at a lower energy level than NADH does. The electron transport chain makes no ATP directly. Instead, it eases the fall of electrons from food to oxygen, breaking a large free-energy drop into a series of smaller steps that release energy in manageable amounts, step by step. How does the mitochondrion (or the plasma membrane, in the case of prokaryotes) couple this electron transport and energy release to ATP synthesis? The answer is a mechanism called chemiosmosis.
ChemiosmosisInETC
#OxidativePhosphorylation
lets hope for 100k on this channel soon and 1 million on power of knowledge ✅
🤞
Yes
Now they have more than 200k Ma Sha Allah
You are an excellent bio teacher I have ever come across. The way you teach with diagrams and recaps. Very well clear and easy to understand. Thank you for your efforts. Appreciate your dedication to make subject easy. May Allah reward you the best of the best.
Thanku so much sir .I have never seen such teacher as well as lecture in Utube ...🥰 Huge respect ..Ur teaching method is very very outstanding..👍
Allah Pak reward you the best sir..... pride of Pakistan... Love your kind method of teaching ❤❤
Big fan of Ur StyLe + PerSonaLitY & Teaching MethOdoLOgY
Best teacher ever...teaching methodology is very much appreciative.... 👍 Up.
Sir believe me soon u ll hit 100k subscribers cuz ur teaching style is much better than other teachers on utube ...just wait for it sir in sha Allah soon the students will come to know that u r the best bio teacher on utube
Mashallah Mashallah Mashallah Mashallah Mashallah excellent lecture sir❤ you made my biology perfect ......❤❤❤❤❤❤alot of love and prayers for u
Crystal clear...⭐⭐⭐⭐⭐to you 🙏🙏🙏...Love from India ❤️❤️
Thank you so much Sir for clearing concepts....May God bless you 🙏😊
Sir literally u made us believe in biochemistry’s topics ❤
Right
salam
Amazing lecture...conveyed the concept in a very simple and easy way.keep it up.well done👍👍👍
incredible teaching style keep going.
Less time consuming with full detailed topic explained...very well sir thank you so much
Your teaching style is sooooo cute
Your method of teaching is osam.
Thank You Sir, Radhe Radhe Radhe-Shyam, 🙏॥
excellent. ever understood etc before this, now its one of my favourite topics. keep it up
So beautiful so elegant teaching method .. just looking like a wow ❤❤😊😊
Love from 🇳🇵🇳🇵🇳🇵🇳🇵🇳🇵Too much informative content❤️❤️
May Allah bless you with a lot of happiness ❤❤
Thnks a lot sir❤❤
May youtube pr sirf ap ki video dakhta hon just ap ki samj ate ha yourr method is outstanding
Impressive methodology 👏👏
THANK YOU A LOT SIR 🙏🏻 ... YOU CLEARED ALL MY CONCEPTS .. EXCELLENT TEACHER
Hatsoff sir zabardast ek ek concept bilkul clear hogaya ek bhi blind spot nhi hai or sir ek jagah bhi ratna nhi parega concept bilkul clear hogaya
Bhai ap se behter ETC koi nahi samgha sakta superb ,,thank u soo much is video se pehle bht confusion ti but know everything is clear so keep it up bhai and stay blessed
Glorious explanation 👌
Crystal concept
Thanks sir
To much informative each end every point is cleared
I always prefer your videos......Very informative and easy....keep it up bro👍👍
Every student should like this lecture 👍👍🏼😀😀😁
you desrve more views ....you explain simply plus your diagrams are amazing and also easily understandable
Smart brains teach so well ( as much as you did it) 🌟🌟🌟
Your method of teaching is really elegant ,,keep it up
Thank you so much .way of teaching is best ❤❤
Thanks sir thank u so much today you have clear my all confusion ❤❤ well done sir jee
Bohtttt bohtttt bohtttt helpful and detailed lectures..
I take your most lectures ..
Thanks 👍👍👍
Keep it up!!
Tricky mcqs
Brilliant explanation... Thank you so much
That's incredible teaching ❤️
Thanks so much for very very easy lecture 😊
Ur menthod of teaching is outstanding .I really like itt
Thank u soo much just bcz of u i did my presentation and got good grades 💗
Thank you so much sir. you are the best teacher.
Amazing lecture
May god bless you thank you alot sir!! For your efforts💕💕
Superb...itne km time me bahut hi ache se samjha Diya.....
A complex topic teach us in a very simple way. nice sir
Very good and easy method of teaching I like ur method of teaching
Thank u for clearing all my concepts
Nice lect. All concept clear
Dur dur tak koi spot nahi hai 😊😊😊😊😊
Thank you so much sir for this great lecture ❤️❤️
Thank you so much sir for this great lecture ♥
Thank you so much sir for this great lecture❤😊
Father of biology❤
Thanks sir it was amazing lecture videos and understand able thanks again keep it up
You are great sir.......🌸Apne meri bohatttttt bari tension khatam kerdi thanku sooooo muchhhh💫
Thank you very much sir !!!
Your explanations are amazing sir. Every video is just awesome ❤
welldone sir ! love your lectures
What an immaculate lecture sir 🤯👍
You are awesome 👌 sir....God bless you.
💫💫 looking forward for your one million 🥺💜 inshallah
Thank you sir I am really understand from your lecture
Short vedio and breif(crystal clear) description sir how u made all this possible this is real talent
Wish ki ap hamary teacher hoty ..ap ki lecture ma class miss hony per sunte hn ..phir class leny ki need b nae parte😇😇😇❤️❤️❤️
Thank u sir for this interesting and most understanding class
Amazing 🤩🤩 thank you so much 😊😊 Allah bless you 🥰
Very well explained ❤️❤️❤️
Thank you so much sir for this great lecture 💖💖💖💖
Amazing.... ❤🎉
Sir you are so perfect for biology subject zabrdast lecture
JAZAKALLAH ALLAH apko khush rakhe bhot shukriya bhot achi smj ae❤❣❣❣❣❣❣❣❣❤❤❤❤❤❤❤❣❣❤❣❣❣❣❣
Thank you so much sir very excellent effort
MassaAllah SubhanAlllah 👍🏻👍🏻
Thank you sir.
Really helpful .
Behtrin lecture sir.
Thank you sir for your efforts
The best lecture
Very helpful sir .....stay blessed ....
Sir krebes cycle Mai total 6 NADH produce hota hai.
Mea bi yhii bolna chta tha yaar ...mujhe confusion howa tha ...only 6NADH
Very helpful🙏🏻
Great explanation 💜
You are the best sir thanks alot
Thanks sir your teaching style is so beautiful so elegent just looking lika a wow 😂
Sir uh r too good thnkuu so much for this video❤️❤️
Thanku sir your lecture helped me alot ❤
Very helpful sir
thank you sir........love from india.
So good lecture Sr g
Amazing amazing amazing Mashallah ❤❤
Thank you ❤❤
Thanks
Shukriya sir ❤️
Vey Eassy method ❤️😍
Well done 👍
Ohh....sir totally awesome 💗💕💕💗💗💗💗💗love u sir g .....,.
Great sir 👏🏻
Thank you so much sir🙏🏻🙏🏻
Thank you ❣️
All time best teacher
Love and respect sir