who ever creates these videos and post them on youtube are amazing. without these videos in their series i would be lost. only thing i wish is that they had videos for everything in my book.
Thank you very much i am preparing for biology olympiads and in my counrty there isnt any good information like animations about the photosystem 2.That was an awesome one thanks !
Thank you for the video, pictures speak a thousand words, I hope you can put photosystem one and photosystem two together in one video. It would be great seeing the overall process in one video. Thank you
Thanks a million for this precious animation:DBut hey, at 1:16 you say that P680 is a special pair of Chl molecules. I am confused. Because albeit my book (Voet and voet) agrees with you but the wiki article on PSII doesn't. It explicitly states that"...Unlike the reaction centers of all other photosystems which have a special pair of closely spaced chlorophyllmolecules, the pigment that undergoes the initial photoinduced charge separation in PSII is a chlorophyll monomer. Because the positive charge is not shared across two molecules, the ionised pigment is highly oxidizing and can take part in the splitting of water."
Wikipedia says the p680 Is formed by a single molecule of cholorophille, while all the other reaction centers from other photosystems (like PS1) are instead made of two. Can you clarify It? Or Is this video mistaken?
One P680 molecule requires two water molecules splitting. 2 water molecules will producs 4 electrons so one P680 molecule requires 4 electrons to be completely reduced?
No, a single electron Is passed on from the P680 at any cycle and continuously stolen by a cluster of Mn4Ca (four Mn and one Ca, not said in the video). The electron is taken by the Mn atoms, which can give It since Mn Is a transition metal. When all the Mn atoms are charged +, for the loss of their electron, two water molecules can be split and send 4 electrons in total, which regenerate the Mn4Ca cluster
what about the efficiency of the resonance energy as the photosystems oscillate the photosystems are undergoing a damping oscillation where energy eventually comes to a nil amount. hence it has to be done within a particular damping cycle so what would be the efficiency of the entire process?
although this video is very helpful for visualising the process, I think it should've stated that for the full reduction of Qb, 2H+ are required, coming from the stromae of the chloroplast. It actually shows in the video, but no remarks are made about it.
please i need this explanation writed down!!.. lol... or maybe someone could tell me were i can download this video!!!... that would be really helpful!
Plants r like little nuclear reactors...lol, If only, we could all use n share power for " free " n without harm to the environment !!!! Hmmmm... One day hopefully we may all work together on this... !_!
who ever creates these videos and post them on youtube are amazing. without these videos in their series i would be lost. only thing i wish is that they had videos for everything in my book.
If you go to our website, listed in the information about this video, you can see a written version of the narration used in the animation.
Thank you very much i am preparing for biology olympiads and in my counrty there isnt any good information like animations about the photosystem 2.That was an awesome one thanks !
Thank you, studying this from a textbook is difficult to visualize.
This clears everything up.
outstanding video! This is indeed the best place to learn biology. Amazing animations.
very informative, I am just starting to learn about photosenthysis and this helped alot
Thank you for the video, pictures speak a thousand words, I hope you can put photosystem one and photosystem two together in one video. It would be great seeing the overall process in one video.
Thank you
Thanks a million for this precious animation:DBut hey, at 1:16 you say that P680 is a special pair of Chl molecules. I am confused. Because albeit my book (Voet and voet) agrees with you but the wiki article on PSII doesn't. It explicitly states that"...Unlike the reaction centers of all other photosystems which have a special pair of closely spaced chlorophyllmolecules, the pigment that undergoes the initial photoinduced charge separation in PSII is a chlorophyll monomer. Because the positive charge is not shared across two molecules, the ionised pigment is highly oxidizing and can take part in the splitting of water."
It was very helpful for understanding molecular biology. Thanks.
New subscriber
Very helpful for freshing my mind up for my oral exam tomorrow :-)
All your videos have helped a lot. Thanks!
What with animation about photosystem I??
Wikipedia says the p680 Is formed by a single molecule of cholorophille, while all the other reaction centers from other photosystems (like PS1) are instead made of two. Can you clarify It? Or Is this video mistaken?
One P680 molecule requires two water molecules splitting. 2 water molecules will producs 4 electrons so one P680 molecule requires 4 electrons to be completely reduced?
No, a single electron Is passed on from the P680 at any cycle and continuously stolen by a cluster of Mn4Ca (four Mn and one Ca, not said in the video). The electron is taken by the Mn atoms, which can give It since Mn Is a transition metal. When all the Mn atoms are charged +, for the loss of their electron, two water molecules can be split and send 4 electrons in total, which regenerate the Mn4Ca cluster
what about the efficiency of the resonance energy as the photosystems oscillate the photosystems are undergoing a damping oscillation where energy eventually comes to a nil amount. hence it has to be done within a particular damping cycle so what would be the efficiency of the entire process?
I am watching after 15 years 😮
although this video is very helpful for visualising the process, I think it should've stated that for the full reduction of Qb, 2H+ are required, coming from the stromae of the chloroplast. It actually shows in the video, but no remarks are made about it.
Where does psii take action in?
Thank you for the informative video, very helpful!
Which components of photosystem II are involved 4-electron reactions ?
reaction centre p680 chlorophyll molecule .
please i need this explanation writed down!!.. lol... or maybe someone could tell me were i can download this video!!!... that would be really helpful!
Great video
SO HELPFUL!
how can i download this video ? please
Beautiful
Chlorophyll molecules, or as I like to call them, little christmas leaf cookies
mae mia como lo calsa este video pa bioquimica!!!!!!asi m entero de toooooooooooooooo
thanks alot!!!!!
hey jz install IDM u cn download all d videos of youtube.. :)
Plants r like little nuclear reactors...lol, If only, we could all use n share power for " free " n without harm to the environment !!!! Hmmmm... One day hopefully we may all work together on this... !_!
youtube downloader
Man I’m still confused af
sadly we are throwing too much co2 out there for the plants to feed on lol