Photosynthesis Part 2: The Light Reactions

[@naufal394]

🎉🎉🎉🎉 incredible teaching. This is the easiest explanation of this on photosynthesis on the internet. Thanks Craig

[@ull893]

Thanks a million. Incredible videos and explanation on the topic of Photosynthesis. If you have time to watch only one video, then this is it. Please watch all the videos of this uploader on this topic. Highly recommended. The only warning is that your grades might go up very high, above the average. If you are o.k with that, then no problem !

[@elsacai4889]

ever year i come back to this video because this is the only video that ever makes photosythesis makes sense to me

[@1800YueeWish]

Your videos are so helpful! You instruct better than my professor and my book combined. Thank You so Much!

[@FarisFitri94]

I Only Have To Watch This Video One Time Only Because The Explanations Are So Clear! Good Job... :)

[@alexisyanez9575]

Be my biology teacher!!!!! All my teacher does is give us worksheets doesn't explain like you do. And she expects us too learn the stuff too.Nice videos and even makes understandable for teens. Thank you

[@jappwar]

Really the explanations are so clear! Thanks and greatings from Brazil!

[@xzoraia]

Very nice use of Smartboard technology! The effects and things highlighted were very helpful!

[@kattavia92dva]

your voice is so soothing and it makes me sleepy but you also helped me a lot =D

[@sarirthadawn]

Finally understood...It is really helping in my exams.. best concept....

[@IPSPMAN90]

Thanks again mate, you are making my life and I am sure a lot of other people lives too be easier by making complex things look rather simpler with so clear and concise explanations, almost to grasps concepts like second nature :)

[@Bettystarsailor]

Fantastic video, thank you. I also have a question, with the cyclic pathway you said an electron excited from P700 goes through the ETC and sent back to P700. However in the non-cyclic, it looks like the same electron is actually sent to NADP+ (to form NADPH) would you mind clarifying-- are these separate? Thanks for your help

[@bondeandeebowl]

I prefer it and find it soothing when stressing out over a difficult exam.

[@Ahern1204]

Currently studying for my Biology final on Friday & looking over these video's. Thanks You!!

[@CraigSavageScience]

No. During the second electron transport chain in the non-cyclic pathway there is not ATP generated. The Electron is still high energy when it is picked up to make NADPH. That high energy electron becomes a high energy bond in glucose.

[@irynaaniushkevich4379]

Love your videos. So simple and clear. What school are you teaching at?

[@selenaprestwidge9530]

you are a really good teacher please continue to enlighten us with your captivating voice

[@lindsaybenitez6809]

FREAKIN WONDERFUL

[@kimschneider3486]

If you live anywhere near the New York Botanical Garden in the Bronx, please apply for the job teaching plant physiology in the horticulture school. You are the reason I have learned cellular respiration and photosynthesis. Thanks!

[@linhphuong9535]

I didn’t see any new video, I love your video, please continueeeee

[@starjewelpearl95]

So water is only used in the non-cyclic right? And thanks a lot. I have A level biology tomorrow and this is the first time I'm actually understanding this!

[@Wardog11111]

Correct, and oxygen is only produced in non-cyclic as well.

[@balazsvarga715]

Proton coupling with NADP+ is not coming from the lumen as stated here, but from the stroma. The whole point of the light dependent reactions is to build up a proton gradient, which would be diminished by this reaction, rendering the process ineffective

[@arafatnabi0]

When excited electron passes through the second smaller transport chain, is ATP released again in non cyclic pathway??

[@daennedolce7097]

Where have you been???? I should have found your channel since I started College, You just made my life easier

[@notsorandomrryyt]

Finally understood this! Thank you!! Hopefully this will help me in our report :)

[@SuperKnowledgeSponge]

Ah just to add that NAPH+ is combined with H+ ion and the electron, to form NADPH via NADP+ reductase.

[@bananacanada25]

Thank you! This is really well-explained and easy to understood! Great help for my AP Biology class :)!

[@Nashayaabc]

I was thought that P680 and P700 receive 4 photons of light at the same time and how ATP was made without the build up of hydrogen ion which come from the 2 water molecules. Isn't the water molecules split with the aid of a specialized enzyme and P680 force of attraction.

[@missbossy94]

Is ATP released in the second electron transport chain?

[@JugglernautNr9]

one question: how do CAM-plants get rid of oxygen if the stomatas are always closed during the day?

[@nurdayana2432]

Thank you ! You helped me a lot with these videos of photosynthesis

[@mansingh-qk5ce]

is atp generated in second electron tranport chain?

[@hochi-hz5th]

just in case you're still wondering, no it doesn't, it only generates at the first chain

[@anonymousdei]

You are so awesome, thank you!

[@reabetswekhusu]

SO THE ELECTON ACCEPTOR IS NOT PART OF THE MACHINERY(IN THE CYCLIC PATHWAY)???????

[@firephoenix8192]

is P700 involved in both reactions at the same time.......if it's not then how is it going to maintain it's electron as the charged electron is utilized in the formation of NADPH and the uncharged electron is no where to be found.......then how can we say that P700 is cyclic........

[@funnybunnysun7]

Where did the NADP+ come from?

[@kimschneider3486]

And, I'm curious if you can explain what happens when a red japanese maple turns green. Probably due to lack of sunlight. LOL I know my instructor won't be able to answer

[@MichaelHarrisIreland]

Which path might have evolved first can anyone guess. The cyclic one seems simplist.

[@TheSundayScriptBlog]

You. Are. A. Sainnnttt.

[@AlejandroGonzalez-tq1wd]

Why does the high energy electron stay charged after the second ETC? After photo system 1?

[@tomwarner1589]

Because no ATP is made in the second ETC.

[@jj64825]

I am still confused because some explanation said The photosystem I produces NADPH not ATP. but in here said it produces ATP. HELP???

[@MichaelHarrisIreland]

Great video, thanks for the knowledge

[@gutshot35]

legendary

[@Agustina1910]

my teacher should learn from you

[@3wa8y]

thanks! like realy THANKS this is so much helpful,

[@olgashmeleva4196]

Thank you, this was very helpful

[@majsus2820]

who is p680

[@jolenevalencia9652]

Your photosystem I should be called photosystem II. Otherwise, the video is very helpful in visualizing the process.

[@MMM-np4oo]

My teacher should take classes from you.

[@EdwardNg190]

I am gonna fail my biology test in 10 hrs

[@Ken-zo9ln]

not with these videos

[@Bernerker]

I LOVE YOU

[@otakufamily5553]

thank u so much for this video

[@unboxingin4k]

this is literally asmr

[@murrasooly6306]

really helpful... thank u

[@LayanaDayem]

Perfect !

[@khendumgyabakphd8065]

Why are you almost whispering in these videos?

[@danister2012]

Tks very helpfull

[@daphneszeles28]

you are a "savage" (in the positive sense of the word, in the slang) (get it yallzes, cuz his last name is Savage?)

[@christinakane9228]

P680 is photosystem 2 and p700 is photosystem 1. p700 was discovered before p680 hence the name even though in the reactions p680 is the first photosystem.

[@kimberlytuazon9417]

Thank you! :))

[@thepoplikids]

das it mayn

[@MissReba88]

helpful, but they're way too quiet

[@UnstableAdrianHD]

This makes me very hungry

[@preranarao4938]

for NADP+ TO BECOME NADPH we need an electron and H+ right?

[@GhulamMurtaza-yk8js]

Just need H+ for NADPH