Photosynthesis (Light Reactions)

[TheThreadshitter]

oh I LOVE plastoquinone Qb.

[Mush474]

Loved th evideo. In India we have to learn this in more detail at age 15 :(

[DoneWithDogma]

damn nature, you hard to understand

[mandapanda818]

Yeahh I have no clue on any of this stuff. Kinda sucks that I have a test on it and I have to demonstrate the process to my teacher... Well, looks like I need to ask my older sister and if she doesn't know then i'm shit outta luck! :/

[yupperspoppers]

ahh biology midterm tomorrow and you saved me! thank you!

[bruinsrawesome123]

I -3 science

[LifeIsABigPuzzle]

Nice animations! :D But I was wondering, how likely do you think it is that plant and animal life could arise without photosynthesis? Europa has an ocean underneath its icy shell and there might be life in it. But could there be plant and animal life without photosynthesis or would it more likely just be microbial life?

[NachiMeNachiMe]

I thought pheophytin was the primary electron acceptor rather than plastoquinone

[cestmoi32891]

Was it just me or did that whole show look appetizing?? Lol

[JenksLeeds]

Haha wtf?!

[myheadissquare]

1:33 clown face

[hazelioness]

Ugh. I thought I'd refresh what I learned last year, and realized I remember none of this -.-

[VeraciousAmI]

I hate plants. The Krebs cycle is better than this.

[sreeanil1412]

thnx. :-)

[WisamHaider1]

ADP + e → ATP with vabritization clorablast to have this electron usage "Mitoganderia" bye lolo

[patrickgpking]

Good video, but it's misleading to depict plastocyanin carrying two two electrons. One plastocyanin molecule can only carry one electron and so cytochrome bf has to facilitate a Q cycle similar to the one in complex three of the electron transport chain of oxidative phosphorylation.

[lolipop86724]

Anyone from Weaver's class? :)

[lolipop86724]

Okay then...

[chris618007]

Chlorophyll? More like Borophyll

[BooRadney]

This video just confused the shit out of me. thanks

[samz2322]

so, this occurs in aliens?

[baabaa33]

REALLLLLLLLLLYYYYYYY AWESOMEEEE!!!!!!!!

you only have 19 vids, but really helpful ones.

[obiwankenobi78056]

At 1:34 NADPH looks like a caterpillar

[sunnysungi]

i thought that ATP,NADPH, and Oxygen were the products of the light reactions stage of photosynthesis, not the entire process :0

[BazingaLad93]

Cortana teaches bio?!!!

COOL :D

[Sonamyfan92]

I SOOOOOOOOO understand this now...:D

[staceytoronto]

omygosh i finally got it . love this ...jusr love this... i have bio test now im gonna ace it . wow...

[Aleque]

awesome

[cheeseisayummyfruit]

caterpie at 1:34

[velvetcat]

@cheeseisayummyfruit Haha yeah I noticed that!

[VitaiyYT]

Афигеть!

[FristOneStoned]

This is Y i believe in creationism !!

[jieshup]

it lookes like the photon comes from inside the lumen

[AguynamedClyde]

damed why cant i find a real phtosynthesis video !! ... btw this is the best i have managed to find !

[velvetcat]

@videoviewer422 lmao

[papashangofan]

@videoviewer422 Wow I just reported this to EDU.com, hope you enjoy your suspension.

[LooneyToon00]

in the begining i thought runaway by kanye would start playing haha

[whathappensnext14]

Plastoquinone isn't the first electron acceptor. The initial electron acceptor is pheophytin which then transfers it to PQ

[XxkawaiiwriterxX]

Uhh.....what? O.o; I understood physical science easily (it was mostly just common sense anyways), but all these chemical names......they're like Latin to me. I just can't comprehend all this scientific jargon. -.-;

[thewiz3rdz]

@XxkawaiiwriterxX I find you can do one of two things, either memorize the jargon and regurgitate it on a test. (Simple, but not useful) Or look up each word, you'll find that many, but not all, scientific names are made up of certain parts that describe what it does, for example ATP Synthase, is an enzyme (protein) that synthesizes ATP (adenosine tri-phosphate = adenosine with three phosphate groups). It gets easier the more you learn... but yes it is frustrating.

[mafayoyo]

this video is simply superb to understand about photosynthesis thaks a lot.....................

[BR1ANwillDESTROY]

Any one notice how the songs and sounds in the begining sound like a creepy video game or a horror movie?

[Triggaspitta]

photosynthesis starts with an electron being excited in photosystem 1 which has chlorophyl pigment A, P700. It doesn't start in photosystem 2. This shit is wrong and I advise anyone who is studying for their MCAT, DAT, or what ever test it may be to not use this video for studying purposes, because they don't have their facts right.

[romellemejia]

@Triggaspitta photosystem 1 chlorophyll a having P700 is correct because photosystem 2 chlorophyll a has P680 BUT PHOTOSYNTHESIS STARTS IN PHOTOSYSTEM 2 not in photosystem 1. check out your biology men before you comment like that because you might affect the perceptions of other people to this nice video presentation. thanks anyway. . .

[akkappul]

@Triggaspitta It starts in Photosystem 2. It is only called Photosystem 2 because it was discovered after Photosystem 1.

[PrunuzGirl]

thank you so much ^^

[LPLZcover]

Thank you for upload !! this really help me :D

[BlackHockeyMonkey]

Isnt ATP created in the cytochrome complex instead of after PS1?

#confused *.*

[PrunuzGirl]

@BlackHockeyMonkey I think you mean "cyclic electron flow"

,but this video present  "non-cyclic electron flow" ;D

[BlackHockeyMonkey]

@PrunuzGirl haha thanks but i kinda geddit now. i should just see that the atp synthesis and nadph synthesis as a simultaneous process. nah kinda dunno how to explain it but i can visualise it clearly in my head :) thanks anyway

[ebbneversatisfied]

thankkk uuuu



[TheCatnape]

boo

[ctagawa]

clear and well animated. good job. helped me understand better. thank you. 

[BeautifulBeau]

odd how happy tree friends is the featured video...

[RossRocks07]

thanks!!



[turqoise29vibes]

thanks a lot that was helpful..!!!

[SixStringsofFury]

LOOK VIVIAN ITS ME ERIC! ITS ACTUALLY MY ACCOUNT!! 

[masu551014]

dude this helps me understand cannabis growing to mutch more deeper leverl now..:)

[runisunke]

Uh..... And this helps me grow Cannabis how?

[robertmarrs]

Comments sound like a chess game. Sad part about science is its very nature trying to disprove/prove god and is very much a political debate cause that's the game of life! If you know the importance of words and maybe use a dictionary/thesaurus/bible your babylon wouldn't be so immature or split in tounge. :) but welcome to the cycle of what we know! your still in the system.

[whipchops]

holy shit, it sounds like she's speaking an alien language

[niskyjruff23]

This is all Greek to me

[fierylava12]

@niskyjruff23 you should drop out and go work at mcdonalds..

[niskyjruff23]

@fierylava12 good one fierylava, you should probably go favorite some more icarly videos now

[RL253SouL]

8=D

[DynastyPercussion]

1:35 WEEDLE! xD gotta catch'em all!!

[ximbomike]

@DynastyPercussion LOOOL

[SculptedThoughts]

@DynastyPercussion I love you.

[DynastyPercussion]

@SculptedThoughts I love you too. ^^

[nikii4900]

biology is all about seeing and relating and watching videos gives us the actual feel of what is really taking place so we understand better. teachers need to know that

[TheEkke94]

fag



[vechmaster]

i like this video, a little complex but it will get me good grades in biology now, also it is very intesting

[tomicdesu]

we are living in one of those sci fi movies where bureaucrats, warmongers and mean-spirited zealots are fighting over scraps and one nerd kid in one lab has the secret to clean energy he's trying to get to the world before they blow themselves all up.

[DailyBrusher]

This shit is some bullshit made up by evolutionists and abortions to make us feel overwhelmed and dumb, so that they can force us to accept their socialist ideology!

[createproducti0ns]

@DailyBrusher

any proofs?

[DailyBrusher]

@createproducti0ns

Yes! Those people are always coming up with some really complicated thing, to confuse people. When the Truth is simple, and clear: Worhip Christ, or you will burn in the Eternal Fires of Hell. The Bible said it, so I believe it, and that settles it! I don't need Occam's Razor, or some combination of deterministic and probabilistic theories, or even careful arguments based on a priori, observable truths. I have the Word of God!

[big7bro7]

@DailyBrusher did you ever stop to think that you feel overwhelmed and dumb because....uh....well, because you ARE dumb and complicated process overwhelm your tiny brain? just a thought

[DailyBrusher]

@big7bro7

Sorry I didn't make my satire plain enough for you! Read again, more slowly!

[big7bro7]

@DailyBrusher lol, i was honestly hoping that's what it was....maybe you emulate those kinds of people a little too well.

[DailyBrusher]

@big7bro7

This was supposed to be the cue, but hey, I don't do this for a living, I'm just an amateur!

"I don't need Occam's Razor, or some combination of deterministic and probabilistic theories, or even careful arguments based on a priori, observable truths. I have the Word of God!"

My wager is that most anti-evolution type folks wouldn't be able to make that sentence!

[big7bro7]

@DailyBrusher that bit does sound like it's supposed to be satirical, but it's sad that you see this kind of thing all over youtube and in forums. people are really as crazy as you made your "character" out to be lol

[DailyBrusher]

@big7bro7

Yeah, the ole reptilian brain seems to be the driving force in 97% of human decisions, and human behavior, eh? Then 2% primate stuff, and about 1% "homo sapiens"!!

[invisiblegurl123]

huh?

[glitteryourose22]

I thought it was complicated now I kinda understand more yay a for biology for me :)

[akifuji913]

@glitteryourose22 yay

[mjgdnbff]

my teacher recommended us to watch this video... can see now why.. tnx that will help a ton on my test tomorrow :)

[aecc0357]

Ho my god my teacher never mentioned anything about protons, she only said about electrons passing through the chlorophyls, this is so complicated

[fieldx200]

I have photosynthetic nipples...

[22poopoo]

@fieldx200 So that's why they are green?

[createproducti0ns]

@22poopoo

lol

[petrokuzz]

@fieldx200 umm i dont get it

[fierylava12]

@fieldx200 to match my photosynthetic blue balls...err...wait..

[teeheeuser]

@fieldx200 Ok so we watched this video on Science class today and our whole class started dying of laughter because of your comment.

[fieldx200]

@teeheeuser Lol, I was studying all night for my biology test and this video was a big help. However, when it gets late my mind starts to go astray, and this is what you get haha.

[princessdeander]

@fieldx200 hahahahahahahahahahahaha! :D

[Joe34880]

@fieldx200 yea but where do you get energy from?o.0

[baabaa33]

@fieldx200 soft.

[HomespunDreamer]

wow. And there are people who believe that this could have happened by chance. Tell you what, evolutionism takes some mighty faith.

[BrettinEb]

@HomespunDreamer It's nothing but chemical reactions which have, over time, become more and more and complex and intricate. Look at a virus. Is it even alive? It's a strand of DNA or RNA inside a protein coat.

[tutulksa]

thanks...dude,u helped me a lot ! thanks

[MargaretOtine]

fank 2 dhs i wudnt pass my science lolz:L evn dow i hate sciencebt yeh fanks

[newspapertux]

Very nice. Its the phosphorlyn ring (sp?) that absorbs the electron first, right?

[will0wamber]

thankyou

[Magicalmysterytour13]

I was so intimidated by the opening that i couldn't stop listening.

[RoseThePhoenix]

The voiceover for this is hypnotic. Which is fantastic, because I need this embedded in my brain.

[omshark900]

Thank you for posting this. I'm 13 years old and in a special science class. Trying to figure this out. And you saved me! :D

[evilpikachu4]

I'm a sophomore and I don't get this :l

[rainbeforetherainbow]

i still dont get it.

[MummyRapist]

@rainbeforetherainbow

back to basics,all you can do.if you don´t understand this than there´s clearly a lack of knowledge

[RapiDEraZeR]

easy and understandable,also NIGGER!

[legomaniac1346]

are the two protons that the plastequinone pick up from the stroma, gotten by splitting h20?

[Folypeelarks]

@legomaniac1346 Actually all of the protons in this journey are taken from the water molecules.In principle, the protons which the plastoquinone picks up are coming from the stroma.But the protons in the stroma were initially sent there by ATP-synthase which picks up them from the lumen.And the protons in the lumen are coming by the splitting of water. ;-)

[legomaniac1346]

wow creepy music much...

[darkheart2death]

to the makers of this video.

I love you. thank you SO MUCH, I have never been good at biology and now finals are coming up and this is just SAVING ME

[Mivsher]

It's amazing how they find all this stuff out.

[RickyPedia02]

Nooow I understand that PSI doesn't release any new electrons, but the electrons released from PSII, to combine with hydrogen ions to NADP, froming NADPH!! Thankyou this was great :)

[hanblum]

Thank you for this video! It clarifies everything really well and is a great study tool. Keep up the great work!

[lolgozertjuh]

Geniaal filmpje

[comeonboeltsy]

i'm 12 years old and what is this

[turncoat11]

@comeonboeltsy this is the way plants transform the energy from the sun into chemical energy, so that they can live. its not hard to understand, its just the concepts are very weird, but if you study, i think you could get to understand it.

[Ov3ract1ve]

awesome video

[RingoGeorgeJohnPaul2]

thank you! as a 7th grader studying this it really helped! we watched this in science class too, and im studying for my quiz now so i watched it again. this is an amazing vid if you dont understand science class!

[goshiluvarchie]

luv this video. 5 minutes of new information much better than the hour of blahblahblah my science teacher throws at me.

[CWokstheWalk]

WHAT THE F*CK???!!!

[Rocio9728]

there are so many big words. i think i missed a cpuple of things. i am more confused than i already was

i ♥♥♥ justin bieber!!!!

[synthpop88]

@Rocio9728 You love justin bieber? Well, there's your problem.

[Sock1122]

Ughh could you repeat that please, I think i missed something

[XxLoveIsMovementxX]

BIG WORDS!!

[UnderstandtheAwesome]

This was very helpful, but it was a little hard to follow along...her voice is so soothing. I could fall asleep listening to this :)

[IGOLDBERGI]

@UnderstandtheAwesome I could suck on your lips.

[2mes1]

Electrons will be exited by photones or not? This movie says smt about "resonance energy", because electrons absorbe a photon and does not fall back to its ordinary orbit?

[cubixguy77]

@2mes1 Photons stimulate electrons to higher energy levels. When one electron is stimulated, it can fall back to its original level and emit a photon, or it can fall back to its original level and transfer the energy to something else. In this case, the electrons transfer energy amongst themselves in a cascade, ultimately exciting the electron in the reaction center. Resonance refers to that cascade, and is quantum mechanical in nature.

[2mes1]

@cubixguy77 many thanks.

E=hv

[Slvr11]

very helpfull!my exams tomorrow!!and this was really helpful because it was brief and to the point. do you have a video on the dark reactions and cellular respiration as well? if yes can i pls have the link?

[darkheart2death]

how could you thunbs down this?! This made me pass a quiz!!!!!

[socks107]

i have no idea what just happened?

[IGOLDBERGI]

@socks107 Can I throb my cock inside your mouth?

[blingsley]

@IGOLDBERGI OMG! LIKE ANYDAY. PM ME ;):P XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX­XXXXXXX OH AND BIOLOGY ROCKS

[RespectMyHate]

people think these systems evolved.

[animaliac]

: the photon sb directed from the stromata to the thylakoid membrane. It is shown from the lumen to the membrane. the cfl molecules sb on the stomata side of the membrane. it is shown on the lumen side

[hawtshrlyn]

goo nerds!!!!! i love nerds <3 nerd love <3 no for real we are G's !!! we run yo shit

[thedudethatrocked]

How does CO2 have anything to do with this?

[NightmareSummon]

@thedudethatrocked Actually nothing. CO2 is used in the Dark reaction or Calvin Cycle. This supplyes the energy for the Calvin Cycle.

[5KnuckleShuffle94]

the ATP and NADPH go to the second stage which is the light independant reaction, aka, dark reaction, aka Calvin Cycle. When ATP and NADPH enter the cycle, G3P comes out, this contains 3 Carbon molecules, when 6CO2 comes from the atmosphere it combines with RuPb, which has 5 Carbon molecules, theres 6 RuPb, 6x5=30+6(from 6CO2)=36, and turns into 12 G3P, 2 G3P(6 carbons) is used to make glucose, it leaves 10 G3P, (30 carbons) which gives you 6 RuPb which combines w/ 6 more CO2 it all starts over.

[purpleglow18]

wow :) great video i love biology

[SophiaChar]

Beautifullll

Love the animation and the girls voice is pleasing to the ears

[SAExile61]

this one is exceptionally good thx

[nightshade097]

Please define mobile carrier. :] when i googled it, brands of mobile carriers came.

[tallteeakasp]

@nightshade097 mobile carriers a mainly used for carrying electrons between two complexes in the electron transport chain. It's like a car for the electrons to get from point a to point b.

[hellomorning1001]

thanksss. i actually understood this animation better than the others

[dustimus1]

so what do the mitochondria in plant cells do?

[krugstersaul]

@dustimus1 there is no mitochondria in plants :)

[iwhitney96]

@krugstersaul Uhhhh... Yea there is. There are even mitochondria in cells with chloroplasts.

[krugstersaul]

@iwhitney96 Uhhhh no, the chloroplast works for a plant like mitochondria would for animals. Its a substitute.

[iwhitney96]

@krugstersaul Uhhhh No. Mitochondria break down glucose into ATP, CO2 and water. Photosynthesis turns water, CO2, and sunlight along with enzymes into glucose. They are the reciprocals of each other. Chloroplasts turn the sunlight into glucose, which is stored, and then it is broken down by Mitochondria to release the energy. Look it up online

[krugstersaul]

@iwhitney96 You are 100% correct about what mitochondria and chloroplasts functions are but all im saying is there are no mitochondria in plants because of what the function for it is. Why would plants need mitochondria if plants need to produce glucose. You said yourself that mitochondrial cellular respiration is the process where glucose is broken down into C02 and H20 and ATP but what plants need is glucose which is why they have chloroplasts.

[5KnuckleShuffle94]

@krugstersaul I'll bet you a million dollars that there IS mitochondria in plants. Deal?

[krugstersaul]

@5KnuckleShuffle94 I looked it up and you are correct I take bio and I felt like a know it all but I was wrong sorry

[tallteeakasp]

@5KnuckleShuffle94 yeah if you were to inject a plant with mitochondria then you would be right :D

[Regards200800]

@krugstersaul it doesn't need to be a plant, there are other beings that uses photosynthesis, but when theres not light, they use other functions.

sorry for my bad english

[krugstersaul]

@Regards200800 I know there are some bacteria that do photosynthesis. Other functions like what?

dw about it

[NightmareSummon]

@krugstersaul Some use other chemicals (H2S) to gain energy (the name of the process escapes me). Or there is even the euglena (protozoa) which become predatory in the dark.

[racechenfroe]

This video saved my ass for a AP Bio test tomorrow. Thanks!

[travelerchild]

1:35- WEEDLE! Minus the horn... Other than that, thanks for the vid, I need all the help I can get.

[harshie101]

@travelerchild LMAO i would've thought the same thing if i was sane at this point XD

[teeheehaahaaho]

thank you =)

@WolfHoundoom - Rememeber that nerds run the world and you will most likely work for one some day. Make fun of us all you want. Me and the rest of�