Photosynthesis Video 1/3: The Light-Dependent Reactions (Including Linear Electron Flow)

[@byronjones6127]

This is, by far, the best explanation of photosynthesis I've ever seen. I'm an idiot father trying to help my daughter understand this process for her 9th grade biology class. I wish they would use this technique in her school. If they did, she could teach me. Great job !

[@DrKevinLamSFU]

Ferredoxin receives high-energy electrons from photosystem I. While light is used to give energy to this high energy electron, the electron itself originally came from the water molecule that was split to provide electrons to photosystem II. I hope this helps :)

[@swarpharmd1]

The Best ! ways to explain. I didn't understand this prosess, 30 yrs.ago.

[@NobleGuardian04]

THANK YOU SO MUCH KEVIN 😄 This shows photosynthesis really well and made me understand how the electrons and H+ flow through the thylakoid membrane and i feel a bit better about the second midterm for BISC 101!

[@MsSimpleMovies]

That clarification question by Erin (about the H ion vs H atom) and your explanation were SO helpful. I'm very rusty, and I couldn't even articulate my question, but that was it! This whole thing was awesome! Thank you both!

[@blazeoof7256]

I am from Germany and our teacher showed us this recently and it honestly helped me so much understanding everything! I am usually very uncomfortable about my knowledge especially in Biology and this made me feel so comfortable learning. Thank you for this Video!

[@komalg6669]

This is the best way of teaching biology. Thank you so much.

[@krisanthonysilveira8244]

Just an awesome way to teach and learn biology .. Great Job ..

[@bodrulahmed858]

Finally, a video that makes more sense. Thanks.

[@marybethkarras9422]

Excellent video! Thanks for making it!

[@JuhiMittal]

You seem really passionate about teaching! Great job

[@radsomachandra2279]

Such a creative person you are....

[@shivanisathaye4168]

Really helpful. Amazing explanation

[@dextar9257]

Best explanation That I ever seen

[@Sandeepkumar-hm2gr]

best explanation i hve ever seen...

[@tet8236]

Good day, I'm back again haha, I would like to ask what happened to the other electron during the splitting of water? does it stays in the lumen or it was transferred also to the PS II together with the other electron? thank you.

[@DrKevinLamSFU]

All of the electrons released from the water are fed into PSII :)

[@tet8236]

@@DrKevinLamSFU Oh I see, thank you very much.

[@briellekaga]

Thank you so much for this!

[@noorakakar6724]

Sir how water molecule spilt

[@tobiaslammert661]

Its a great model for a first approach. I would like to create a smiliar model for my students. What material did you use to make the "electrons"?

[@DrKevinLamSFU]

Thanks, Tobias :). The electrons were these plastic practice/wiffle golf balls I got from the dollar store. They come in white and bright yellow, but they ran out of yellow ones so my wife helped me paint them yellow. If you step on the seam gently, they split into two halves, so they won't roll around once you place them down. Please note that I made a bit of a mistake in making the hydrogen red and the oxygen white (when the convention is the other way around). Have fun! :)

[@gjreviews2120]

great presentation

[@nerdia666]

where does the ferredoxin receive electron? from the light or from the etc?

[@teverygluon427]

SUPER!!!!!!

[@tet8236]

Good day, I would like to ask what is the name of the book you are using? Thank you.

[@DrKevinLamSFU]

Campbell Biology, published by Pearson. I believe the picture shown in the video may be the 9th edition (2011). :)

[@tet8236]

@@DrKevinLamSFU Thank you very much. Btw really nice video, I've learned a lot.

[@DrKevinLamSFU]

@@tet8236 You're very welcome :), and thanks! :D

[@zainabzahra8468]

marvellous performance like it

[@aixaazqadri]

finally...i got it..thanx to youuuu :)

[@pinderman8099]

excelllent job

[@faffa7ta]

Plastoquinone is reduced when it accepts two electrons

[@verynicekhan1929]

best video ,in regeneration of (RUBP) only one ATP req. ??????????

[@buddhikaherath1930]

Thanks a lot.i got it

[@Just-thy-way]

amazing .. thanks. :)

[@reyeselizabeth]

What Materials Did You Use?

[@DrKevinLamSFU]

+Elizabeth Reyes For the chloroplast model, I used paper towels for the membrane, poster paper for the enzymes and carriers, yellow plastic wiffle golf balls for the electrons (they split in half if you squeeze them along their seam in a nutcracker, so that they won't roll around), Tennis balls for the protons, and large styrofoam balls for the oxygen. for ATP, I bought a long 20-pack of sponges and picked out the blue ones for the adenosine , and I painted white styrofoam balls with yellow acrylic paint and connected them with bamboo skewers. All of this stuff is cheapest in dollar stores (even the paint and paintbrushes!)... styrofoam balls tend to be sold more often in the independent dollar stores than the chain ones (crafts stores have them too, but it's way more expensive). I made a mistake though: the hydrogens should be white and the oxygens should be red (if we're following conventional colours for these atoms), so if you can use a darker background for the model, it might be better to use the red tennis balls (or something bigger, if possible) as oxygen atoms, and white wiffle golf balls or styrofoam balls for hydrogens (you'll need a darker background for these "hydrogens" to show up more clearly, though).' I hope that helps! Have fun! :D

[@troyb8579]

thanks 4 thiss

[@lawtrafalgar6702]

cool

[@AnaTiticaca]

i get it... thnx ....

[@3256990]

who the scums who disliked this video