Added: 3 years ago
From: ndsuvirtualcell
Views: 731,105
Sort by time | Sort by thread (beta)

Link to this comment:

Share to:
see all

All Comments (490)

Sign In or Sign Up now to post a comment!
  • I study biology, yet it have always seen to me, that cellular respiration processes are boring. Not so long ago I forced myself to learn about these processes, because of biology exams, so I watched Khan Academy videos about glycolisis, Krebs cycle and ETC and holy shit, my jaw was literally dropped. These processes are amazing.

  • skip to 1:40 to beat the introduction

  • Finals in 2 days.

  • This process takes place in the Mitochondria. The Mitochondria use to be its own individual cell because it produces ATP and has its own DNA structure.

  • Why do they have depressing music at the beginning? Shouldn't they be trying to coerce people into watching it? Although, I did see this one video of the sliding filament model that was basically a rave, hahaha. That made it confusing...

  • And this is happening in us right now

  • Woohoo!!! Adenosine Triphosphate!!!

  • this is rly good. I didnt get it until now. thanks a ton

  • What about FADH2? Doesnt this donate hydrogen to the system?

  • Thumbs up if you...really didn't unerstand this -.-

  • Thumbs up if you LOATHE biology -.-

  • You should've made the Cytochrome in red color because it forms haeme later. :)

  • 45 free radicals disliked this video.

  • @StormZephyr hahahah made my day!

  • the intro is rly weird :I

  • @ovechkin651 I agree, but I love it!

  • the music at the beginning is so fucking sad

  • thumbs up if u got a final in three hours and believe ur honestly fucked

  • thamks

    

  • Change ADP+pi→ATP creation motion

  • Your videos are the BEST!

  • NO COMPRENDER!

  • Even the narrator sounds bored...

  • @FierceSquirrelyZebra It isn't boring if you understand.

  • Very helpfull

    

  • Youtube and Yahoo: Answers are my two main sources of studying :P

  • @Wessyification ditto!

  • I wrote everything she said lmao. this video is 100% better than my lecture handout. thanks to whoever made it.

  • @9klam9 lol, I do the same! Really good idea :P

  • This video explains vastly more than lecture.

  • Excellent. Sure, it doesn't show everything involved in the chain (lactate dehydrogenase and so on), however it's perfect to understand the general process. Helped me a lot!

  • thanks for upload it will help me alot:))))

  • 43 more people needs some more ATP... gettin a little cranky.

  • This is awesome! So much better than my teacher.

  • Too simplified 

  • nice video

  • lol i have a test on Photosynthesis, Cellular Respiration, and Fermentation (alcoholic and lactic acid) today :( so this will help :)

  • i don't know about anyone else but the music at the beginning had me thinking i was about to watch an exorcism

  • ATP synthase seems like a piece of machinary makes me feel like were robots

  • @WoW4lyfe123 We are robots man....biological robots :O

  • What kind of sick fucks would take the time and effort to dislike an educational youtube video about electronic chain transport?

  • OMG this is so much more complicated than freakin photosynthesis.

  • @maddywoo13 photosynthesis is as complex as this is lol

  • how many waters are produced in the ETC

  • Nice animation, but the stoichiometries are not right.

    NADH dehydrogenase pumps 4 protons per NADH

    cytochrome b-c1 pumps 4 protons per ubiquinone (using the Q-cycle)

    and cytochromo oxidase pumps 2 protons per 2 electrons.

    So for each NADH oxidized you will pump 10 protons to the other side of the membrane. I found this info in my biochemistry book LEHNINGER, principles of biochemistry, used in al bachelor studies that have something to do with biochemistry.

    Happy studies to everyone!

  • You forgot to mention FADH2

  • all you young chumps should remember this well, i made it to grad school and guess what we have a 'quiz' on.

  • We watched this during Biology class and everyone was amazed

    :D

  • thumbs up if its late at night and you just want to finish your biology homework

  • i love you

  • Cramming for an exam? Yeah, me too.

  • I have to watch this about 20x so that I can get that into my brain, why does cells have to be so damn complicated.

  • Thumbs up if Biology class sent you here

  • Comment removed

  • Thumbs up if you watched this in Biology class!

  • This will help me pass my Honors Biology Test.

    Thanks!

  • WHOOP mf's found another complex- so complex 2 is succinate dehydrogenase and ATP synthase is now complex 5 which is NOT considered part of electron transport chain anymore as it only uses proton gradients to synth. ATP...

    thumbs up for updated knowledge!

  • wooo ! bio rock ! kinda sucks ayt ? haha :D

  • i ddnt get ur mean

  • Thumbs up if your biology teacher told you to watch this to answer your assignement ^^

  • Go Bison!!!!!

  • what about FADH2?

  • Im learning now that there are 4 complexes not including ATP synthase, so there is Complex 1: NADH dehydrogenase

    Complex 2: Succinate Dehydrogenase

    Complex 3: Cytochrome bc1 complex

    Complex 4: Cytochrome oxidise

    Complex 5: ATP Synthase

  • @xtremist91 that's right dude... and by the way, instead of 2 H+ coming out from cytochr. bc1 complex there are 4 H+ ;-)

  • Great work! :)

    

  • there is a god

  • thumbs up if searched for baxtar aftr this video

  • Nice video... thanks :)

  • Very nice! What about succinicDH? Q cycle?

    10 H+ per NADH = 2.5 ATP per NADH

    6 H+ per FADH2 (succinincDH, G3PDH, beta-ox) = 1.5 ATP per FADH2 (bypasses NADHDH, of course)

  • how many hydrogens required for ATP synthesis??? how many cycles produce 12 ATP molecules????

  • thumbs up if u have final comming up :D

  • @SUSOAB finals suck, cant wait to be done with bio

  • its really all about the gradients...

  • who is baxter? i'm here for my bio exam.

  • Tell Baxstar I said hi and I hate him even though I don't know who he is.

  • the hell is baxstar

  • Thumbs up if Baxstar didnt send you here

  • @truongkahp who is Baxstar?

  • Yea have to agree. there are some faults in this video. Skipping complex II (FAD DH) and missing protons as mentioned, 4 protons for NADH DH, 4 protons for Cyt b-c1 and 2 protons for Cyt Ox.

    Furthermore it takes 12protons to make 3 ATP, which means that that is an error too. (equivalent to 4 protons/ATP)

    Else props for the video.

  • Yea have to agree. there are some faults in this video. Skipping complex II (FAD DH) and missing protons as mentioned, 4 protons for NADH DH, 4 protons for Cyt b-c1 and 2 protons for Cyt Ox.

    Furthermore it takes 12protons to make 3 ATP, which means that that is an error too. (equivalent to 4 protons/ATP)

  • this video helped soooo much, whether or not the exact #s were correct. thanx!

  • LMAO at the people having a debate on whether god exists on a fucking electron transport chain video!

  • the protons is not pumped, the protons are biproducts of NADH H+

  • Great Video! Hahaha this is HILARIOUS with transcribe audio on, try it - just to be the immature one to point that out.

  • great vid thanks !

  • whos baxtar

  • The video is wrong about net number of protons pumped across:

    for NADH: 2 electrons go through chain pumping out 4 H+'s in complex I, 4 H+'s in III, and it's right for complex IV saying 2 H's for every electron pair.

    for FADH: same but skips complex I and enters at II, pumping across 6 H's per el. pr.

  • @jardoi6 how can 4 ions be pumped out and only 2 electrons be used? Each hydrogen only 1 electron. So i don't understand...

  • awesome video :) though a little annoying to find out that god is watching me because i have my own personal beliefs.

    and not all athiests think there smarter than everyone else. thats stereotyping

  • the hydrogen gradient in the inner space, is that hydrogon atoms or hydrogen protons?

  • @ilikeshinythings those would be hydrogen ions

  • can someone please explain to me how the topic of religion became rampant on this biochem topic? thanks...

    Great vid btw

  • @cah232 It has something to do with trolls is my guess. Just ignore it and enjoy the awesome animation. ;)

  • @ThePopeAndy You can ignore God, but God won't ignore You. :)

  • @ProofMelody1 Cool story bro. I came here to study for Science class not a sermon. The video has nothing to do with religion why do people go on about it....

    Just studying for my bio class why does everyone have to bring religion into it just mind your own damn business and stop trying to convert everyone ty.

  • @ThePopeAndy You don't have to believe any of that. Its your choice. But my God is as much a part of me as my skin tone, so when the issues comes up I Will talk about it. But have fun studying Biology. :)

  • Great for studying for biochemistry class, with the electrons and protons all pretty and marked

  • wheres FADH2?

  • @jjuggernaut Complex II, man.

  • wish I'd had animations like this when I was in science class!

    Points for inspiring the rest of us.

  • For some reason, the complexes found in the ETC sound like they could be really good rapper names...

  • i finally fucking understand this(would have taken me ages to figure this out with text helps). these animations are great and we even watched them in biology class.

    highly sugested

  • Does the NADH become NADH+ when two electrons are removed?

  • @omshark900

    It actually loses two electrons and a proton. The electron and proton are a hydrogen atom (hence, the 'H'). The loss of the second electron raises the oxidation number to +1.

    NADH --> NAD+ + H+ + 2e-

  • Thanks. I understand electron chains now!

  • @Deliathin incredible. Billions of dollars and the smartest people in the world have been working on this for twenty years and you just came up with the answer! What good would change the genotype of one virus do when there are 10^10 inside your body wrecking up the place? You going to just change the genotype of every single one?

  • This girl has a sexy voice

  • Awsome

  • Awsome

  • Thumbs Up If Baxstar Brought You HERE!

  • lol baxstar used this for his biology class

  • How did the complex process of cellular respiration evolve?

    Which came first: glycolysis to make energy, or the energy from glycolysis required to produce enzymes? Without enzymes, glycolysis cannot take place to produce ATP. But without the ATP, enzymes are not manufactured. (This seems problematic since glucose is only found in other living things.)

    Also, how did the first living cells survive while a mechanism was developing to produce and store energy in the form of ATP?

  • @AA32m7io1 I think this is as strong as prove as any that the universe was designed by God. Only He could have set this in motion. It just doesn't make sense otherwise.

  • @ProofMelody1

    "I think this is as strong as prove as any that the universe was designed by God."

    I agree!

  • Comment removed

  • @AA32m7io1 and our one planet is smaller than an atom in comparison to our universe. If evolution of glycolysis can happen here, other forms of evolution can happen in another place, agreed? Or are you one of those extremely closed minded Christians? and while we are on the subject, why would god make cyanobacteria to put O2 on Earth so Humans could breathe? He could've fitted that in to the day he created the water. i'm not saying theres no overall god, but not one that cares personally of us

  • @TDWPMegalomaniaTDWP D of D

    RE Pulsating Universe Theory "it postulates that all matter in the universe condenses down until it cannot anymore then explodes and starts expanding again"

    Speaking of fairy tales, what exactly is the empirical / observational evidence supporting PUT? And why do you believe this as opposed to other theories such as plasma cosmology?

    It never ceases to amaze me at the lengths man will go to in order to suppress the truth about God (see Romans 1:18-23).

  • @TDWPMegalomaniaTDWP C of D

    No matter how you slice it, this really puts a strain on the evolutionary timeline! In fact the article says,”

    “To have this amount of oxygen, [warning: presupposition forthcoming] the Earth must have had oxygen producing organisms like cyanobacteria actively producing it, placing these organisms much earlier in Earth's history than previously thought.”

    Or perhaps God created oxygen.

  • @TDWPMegalomaniaTDWP B of D

    The article says, “Red jasper cored from layers 3.46 B years old suggests that not only did the oceans contain ABUNDANT OXYGEN then, but that the atmosphere was AS OXYGEN RICH AS IT IS TODAY...”

    So how did the amino acids link together with so much oxygen?

    Also, how did so much oxygen get into the atmosphere from the time earth formed and cooled?

  • @TDWPMegalomaniaTDWP A of D

    “why would god make cyanobacteria to put O2 on Earth so Humans could breathe?”

    Please explain the evolutionary timeline of cyanobactira (from abiogenesis) since we now know early earth had abundant oxygen.

    See: “Deep-Sea Rocks Point To Early Oxygen On Earth” (ScienceDaily, Mar 25, 2009)

  • @AA32m7io1 I have your reply, but its in a message, and I spent a lot of time on it so please accept my request and I'll send it.

  • @TDWPMegalomaniaTDWP

    I appreciate the offer but prefer to keep these conversations public so everyone can see the arguments being presented by both sides.

    And yes, I realize YT's 500 character format is cumbersome for these types of discussions. So just start with the highlights of your rebuttal and we can go from there.

  • @AA32m7io1I was strongly religous and I know a great deal of the bible, so i am not a typical one-sided i hate god type, i am extremely open minded, but I will turn towards logic and proof before I believe in other humans, because believe it or not people lie, even during biblical times. If you believe in miracles thats fine, but theres always a scientific cellular/chemical explanation, and have you ever thought that the stories in the bible are just overexaggerated to make a good story.

  • @AA32m7io1 possibly those rocks could have been placed at a totally different location then, then swept deep under, but still retaining their oxygen. But oxygen from where...shit. But just because we don't know something doesn't give us the right to give God the credit. We used to think god made the sun come up and down. I could write pages on this subject so I'll stop here and tell me what you have to say about it.

  • @AA32m7io1 Our atmosphere was not always rich in oxygen, sir. It was composed of Hydrogen and Helium. Note first oxygen appeared in oceans and atmospheres 2500 MYA.alright, I just read that article, and I admit, that is EXTREMELY interesting, i'm bringing that in tomorrow...wow. This is just me speaking here, thinking of explanation, the plates obviously have shifted a great deal and

  • @AA32m7io1 Nitrogen fixaters change N2 to NH3. CO2, N2, and water is all that cyanobacteria require. I have no clue what you are talking about with oxygen. . And your deep sea rock theory is also backed up with information and theories like all our oxygen and water got here from asteroids colliding with earth that were rich in those compounds. lol fail.

  • @AA32m7io1 120 period time frame, now you can't say that all of this information collaborated together is 100% accurate. Now I respect all religions and have nothing against god (God) but frankly, It just isn't logical.Now, I would like you to view a video of mine..."Christopher Hitchens - Christianity is Immoral". Now what you said," How did amino acids link together with somuch oxygen" WTF man??Nitrogen is essential for the production of amino acids and nucleic acids in organisms.

  • @AA32m7io1 "brainwash" their congregation, being that they bring them and tell 5 year old kids their ideals. And it goes from there, with that person obviously believing what he has been brought up to believe. My truth is not in "unrighteousness" but in facts. I am not trying to minimize god, just explain. The bible leaves no room for explanation. Will I go to hell because I believe in facts and not what the Bible says? The Bible was written by dozens of people within about a

  • @TDWPMegalomaniaTDWP 2 of 2

    “Now I respect all religions and have nothing against god (God) but frankly, It just isn't logical.”

    Speaking of logic, where do the Laws of Logic come from? Since they are not physical in nature, what empirical evidence do you have that proves their existence?

    Also, where do the Laws of Logic fit into Herbert Spencer's five categories of time, space, matter, force and action?

  • @TDWPMegalomaniaTDWP 1 of 2

    “I was strongly religous and I know a great deal of the bible..”

    I have no reason not to take you at your word. Could you please tell me what empirical evidence caused you to reject the Bible and religion?

    “have you ever thought that the stories in the bible are just overexaggerated to make a good story.”

    Never.

  • @AA32m7io1 Hey sorry this took so long, spring break then I just put it off :P. AHa, the four laws of logic,Something cannot be true and not false. Correct? Now you can prove, logically, that something is something by looking at the molecular formula of that compound or whatever, and therefore youve proved that that is what it is.

    The whole unbelieviabilty of the bible and religious views is why I don't believe. Many circumstances, all miracles, but could you ask me a more specific question?

  • @AA32m7io1 "For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who hold the truth in unrighteousness"

    I profess myself to be wise because I demand factual evidence of things? I am a fool because I don't have blind faith one of hundreds of religions that has no proof whatsoever? Christians, if you will,

  • @ProofMelody1 If you look at glycolysis, you'd see that it is theoretically super inefficient. All these reactions are the results of billions of years of trial and error. In my opinion, God had nothing to do with this.

  • @blaggosphere actually glycolysis was handcrafted by the almighty God. JK i don't believe in fairy tales, but anyways correction, millions of years, its the oldest form of ATP synthase in all life forms, but I am pretty sure it is millions...idk whatever

  • @blaggosphere On a humorous note have you even thought about if glycolysis WAS more efficient that we would see a even great increase in obesity? Scientists are Already looking for way to make our system less efficient. Just two examples are the Atkins diet where by increasing carbs & decreasing fat intake you run the system backwards to use up more ATP, & something scientist tried but had to recall due to safety issue: finding a way to let heat escape instead of ATP formation in ETC cycle.

  • @ProofMelody1 You obviously have never heard of the Pulsating Universe Theory, it postulates that all matter in the universe condenses down until it cannot anymore then explodes and starts expanding again until the GIGANTIC center of all center gravitational pull starts to pull everything back, and this happens over and over. Kind of like a paddleball and when you hit it the string only allows it to go so far. Say that ur right, there is a god. Why would he care about a single planet? seriously.

  • @TDWPMegalomaniaTDWP You are right: Why would God care? But He does. He tells us so in his love letter to us: The Bible. In Romans 5:8 of the Bible it says: "But God demonstrates his own love for us in this: While we were still sinners, Christ died for us." From scanning over a few of your more recent posts I get the feeling that you are highly intelligent about biology, etc. and religion. You seem to know about God with your mind, but what is God telling your heart?

  • @AA32m7io1 I don't think all cells use glycolysis, the reaction necessary to make up the proton gradient is sometimes powered by sunlight in plants for example, or by reducing metallic ions in ferrobacteria. Your second question is valid as far as I know though - I can't find any examples of organisms that don't need ATP, and such a high-energy molecule certainly isn't going to make itself on a regular basis.

  • At the beginning, shouldn't it technically say "the electron transport chain is a series of protein complexes embedded in the mitochondrial MATRIX's membrane"? Correct me if I'm wrong.. I'm just trying to understand here!

  • @ipsamtrash

    You're right, but so is the video. The membrane where electron transport takes place is the membrane between the Matrix, and outside the matrix. The video simply refers to it as the "membrane" which is the only membrane in the Mitochondrion. They might also be called Cristae.

  • @miphisto55 nope. there are two membranes. and Cristae refers to fold in the inner membrane. Cell anatomy fail.

  • Lol @ all the Baxstar comments. People stalk my favourites and video watches eh lol.

  • @miphisto55 yea we do :DDDD

  • Like this if Baxstar sent you here.

  • Baxstar is smart O.O

  • wow, why didn't i look for this video when i had to study this for my honors bio class haha

  • How does Baxstar understand this... At all? -___-

  • AHHHHHHHHHHHHHHH * Brain Explodes *

  • I saw this because Baxstar saw it. ;D

  • Thumbs up if Baxstar sent you here.

  • @iJordanVeeCA who's baxstar?

  • great!fantastic! I would have had a completely wrong picture of this in mind unless i saw it.thanks!

  • yes test on this 2morrow :D

  • THANK YOU!!! LOL

  • What about FADH2 and where it enters ??

  • @latinpapi1 FADH2 comes from the Krebs Cycle, where it picks up H. In ETC, it binds to the second complex, releasing H as protons and electrons. Same principle as NADH:).

  • biology final tomorrow.... this video is so helpful

  • this helped me. But damnit i have a biology test tomorrow just found out 2day. its all of cellular respiration 2

  • thumb up if you say "ohhhhhhhhhhhhhhhhhh" after watching the vid! lol

  • omg i hate biology sooo much but this helps so thankyou. ugh i have a test tomorrow:((

  • isnt 1 H is pumped per NADH in each step.. so total of 3 H?

  • hmm what about succinate dehydrogenase ( complex II ) isnt that also involved in electron transport chain as it transports electrons from FADH2 to Ubiquinone???

  • @Deliathin Thanks for your age. That's incredibly pertinent information.

  • this process cannot be compressed into a simple 4 minute video. but it was a noble attempt

  • i`m gonna fail biochemistry !

  • im so fucking high i dont even know what just happened in this vidd. trippy stuff though

  • Where do the 2 more electrons that enter into the cytochrome b c1 come from???from another NADH???if so then it means that 2 NADHs give 10 H+ not 1......since 10 H+ can make 3ATPs it means that 2NADHs=3ATPs,but ive read that 1NADH=3ATPs:-(

    If the 2e- come from FADH2 then it shud b 1FADH2+1NADH=2ATPs not 1FADH2=2ATP,right?

  • Where do the 2 more electrons that enter into the cytochrome b c1 come from???from another NADH???if so then it means that 2 NADHs give 10 H+ not 1......since 10 H+ can make 3ATPs it means that 2NADHs=3ATPs,but ive read that 1NADH=3ATPs:-(

    If the 2e- come from FADH2 then it shud b 1FADH2+1NADH=2ATPs not 1FADH2=2ATP,right?

  • why are the hydrogen ions pumped to the intermembrane? and where do they come from?

  • @arizorki The H+ are pumped out by the free energy that is released as electrons move across the chain. They create a concentration gradient because H+ increases the pH in the inter membrane space, creating stored potential energy.

    The H+ come from glycolysis when NAD+ is reduced into NADH and H+.

  • AWESOME

    but I can't download it because my Youtube Downloader tells me :" download error: 404 not found"

    :(

  • @Mrkarateboy1 install orbit dowloader and use "grab" to catch this useful vid :)

    sorry for my bad english :/

  • thanks

  • this video honestly helped..thank you! :D

  • THIS IS AMAZING THANK YOU SO MUCH FOR POSTING THIS IT REALLY HELPS!!!