My teacher tried to pile on Light Dependant Reactions, The Calvin Cycle, Glycolysis, Fermentation, The Krebs Cycle, and the Electron Transport Chain ALL IN TWO WEEKS. I didn't retain any of it, and now there's a test on all of it tomorrow, but thanks to you I think I can manage! Thank you so much!
I love you. You make my life a lot more pleasant. And seriously, you're the best teacher I've ever had, even though we've never even met in person. Thank you so much for existing and doing what you do!!
Sir, you have just saved me from failing cell biology and in turn possibly dropping out of university. Please, keep making your videos and I will definitely share this with my friends. In all honesty, you have taught this subject in the best way i have experienced. Thank you.
to study for my bio final a few weeks ago, instead of reading over my notes and such, I watched your videos on my topic. got a 97%. came back to share this success story.
Amazing. Finally, education is adapting to the student and the student is utilizing computers and the internet, not an overpriced book, an uncomfortable desk, and a boring teacher. Bravo and cheers my friend. These "free" videos are much better than any science class I had at my extremely expensive four year college.
I've never made a comment on youtube but I had to. This video is so good...I kept waiting for him to start explaining the Calvin cycle and when he was like, "and that's the Calvin Cycle." I'm like wow...I never learned something so easily before
I honestly don’t comment that often on videos but Khan academy has helped me so much with my studies, way better than my teachers do. And this does not only apply to biology but also how great you are at explaining other subjects concepts as well. Thank you for saving our mental health a day before our exams, I will never be able to thank you enough 🙏
BitterSweetNitemare i feel the same... it all started when i was looking for videos on the krebs cycle... i could never get my head around it... but this guy explained it so well... then a few videos down the line led me here, and for the first time in my life i have a decent understand on the subject :) amazing
Words cannot express how grateful that I am for this video. I completely understand everything in my Honors Bio class! Keep making these videos because I know that I am not the only one affected by these. Thanks again!
Got my final exam on Monday... should've started watching these videos after the first lecture. These videos are so much clearer than any lecture I've had all year.
Also, Rubisco stands for RibUlose 1,5 BISphosphatase Carboxylase/Oxygenase. If you are asked about photorespiration, it occurs when rubisco (which is a very inefficient enzyme) binds Oxygen instead, which occurs quite commonly.
you're incredibly talented at explaining seemingly difficult concepts. thank you so much for applying your talents like this, and for choosing to help so many people throughout their journeys toward knowledge. :)
As someone studying Biology from home out of a huge folder with no tutor to help, this is a God send! Thank you so much for doing what you do you beautiful man, you!
Out of the thousands of videos I've looked for in order to get some understanding (book & proffesor are not doing it for me) YOU have been the biggest help!! Thank you a million times!!! :D
Thank you. I've got my test tomorrow, and I'm watching this videos over and over again, with my biology book on my knees, trying to translate everything properly ^^ But I think I get it! Thank you very much for help! Greetings from Poland :)
I got a Biology exam tomorrow, I spent over hours to figure out the cellular respiration. Finally I spent around 30 minutes to watch the whole series of it in yous channel, and I get it now. Sad that my teacher sucks in explaining.
thank you for all the photosynthesis and cellular respiration processes videos!!! It really helped me from failing finals. To be honest, I couldn't understand what my biology teacher is teaching at all. Maybe it's just me, who knows. These videos taught me more than my biology teacher teaching in one semester. Big thanks to you sir Khan!!! Thanks for giving all of us knowledge!!!
Thank you! I missed my bio teacher's lecture last Wednesday on the Calvin Cycle, so this really helped, I've watched it about 4 times and taken notes off it, thank you!
The reason that they are so long is because he explains things in sufficient detail to give the viewer a full understanding of whatever is being covered; not just surface-level knowledge.
Guys there is a video missing, which comes after 'photosynthesis: light reactions 1' but before this one, if you want to look at everything in order. The missing video is about cyclic and non-cyclic photophosphorylation, which is pretty important. Just search 'Photosynthesis: Light Reactions and Photophosphorylation'
im in unimelb year one, thank you so much for your help. your interpretation is lucid and very very clear. it answers all my question that the book did not tell. thank you so so so so so so much! i love you
Really great movie! Explains it very well, however in my book of plant physiology it is said that: "The traditional view of the PCR cycle was that it did not require the direct input of light. These reactions were consequently referred to as "dark reactions" of photosynthesis. In the view of the fact that at least five critical enzymes in the cycle require light activation, such a designation is clearly not appropriate." "These include glyceraldehyde-3-phosphate dehydrogenase (G-3-PDH), fructose-1,6-bisphosphatase (FBPase), sedoheptulose-1,7-bisphosphatase (SBPase) and ribulose-5-phosphate kinase (R-5P-K)" It's a small, and not so important thing for everyday RUclipsrs, but maybe important so someone :) Keep up the good work!
thank you soooooo much. i love this set of vedeos. i feel lucky cuz i foung this accidently. however now i don't have to worry about biology since there is the khan academy. thanks a lot. this is really helpful and very interesting to learn.
your videos are really helping me out to understand photosynthesis much better! being a private candidate and studying from homem you are like my personal tutor! thanks !
Omg thank you!! I'm not even English but through you fantastic explanation I finally understand the Calvin-Cycle I was so confused with the Reduction-part ^^ Greets from Germany
Before Khan academy I was sincerely convinced I would not even pass AP Bio. Now I'm starting to believe I may be able to achieve a B. Thank you Khan Academy!!!
I understood in this photosynthesis videos what I didn't in two 2 hours lessons. Either I am getting smarter at an exponential rate or Khan is absolutely amazing at explaining things. I would love for it to be the first option but... Oh well.
THANK YOU SO MUCH I WAS STUDYING AND HAD ABSOLUTELY NO IDEA WHAT WAS GOING ON SO I WAS PANICKING BECAUSE I HAVE A TEST TOMORROW BUT THEN I FOUND THESE AND NOW I UNDERSTAND EVERYTHING AND IM SO HAPPY THANK YOU
OMG thankyou, my friend and i have to make a project on photosynthisis and i had no idea how any of this worked cuz our ap bio teacher sucks and this has been SO HELPFUL. thankyou. :)
Me too. But with a lot more details, like a l o t . But i seriouslly believe that knowledge is about building on a strong base, so prefer to watch these videos first to learn the main structure and then delve into !
I knoww what you mean, however maybe people will see this potential and in future our lectures will be in this format, i find them much easier to learn from, although a great deal of it is down to Sal's teaching skill.
THANK YOU SOOO MUCH!!! i have a bio exam tomorrow and i did not get it when my bio teacher taught it. thanks to you im gonna pass (at least the parts you taught me :P)
![Megan Thee Stallion - Roc Steady (feat. Flo Milli) [Official Video]](http://i.ytimg.com/vi/HozPPyqW0dY/mqdefault.jpg)
Not a single commercial in any one of his videos... After I graduate you get my first check!
Did you graduate yet?
Edo Tensei lol fr
did you graduate yet?
did you graduate yet
did you graduate yet?
My teacher tried to pile on Light Dependant Reactions, The Calvin Cycle, Glycolysis, Fermentation, The Krebs Cycle, and the Electron Transport Chain ALL IN TWO WEEKS. I didn't retain any of it, and now there's a test on all of it tomorrow, but thanks to you I think I can manage! Thank you so much!
oh my god i am literally going through the same thing as you right now😭😭
Same here bud
My teacher explained it literally in 1,5 hour how r we supoosed to know it all omg
yaaa same
I love you. You make my life a lot more pleasant. And seriously, you're the best teacher I've ever had, even though we've never even met in person. Thank you so much for existing and doing what you do!!
Wow! Such good comment, with the same feelings that I have!
I think I learn more from these videos then from going to class! Thank you sir Khan!
Deez nuys
Billy Tragyu
i learned more on the internet
@@billytragyu4679 underrated reply
@@arjunsecondary underrated reply 2.0
sometimes, i wonder if this is all made up.....
Sometimes, i wonder my life is a joke
I'm not sure people are imaginative enough!
Lol...get a mass spectrometer
hahahahahahahaha... this just made my day.
It is made up.., of atoms
Sir, you have just saved me from failing cell biology and in turn possibly dropping out of university. Please, keep making your videos and I will definitely share this with my friends. In all honesty, you have taught this subject in the best way i have experienced. Thank you.
How's your life right now?
the photosynthesis that I learned in my childhood just became a nightmare 🙂
to study for my bio final a few weeks ago, instead of reading over my notes and such, I watched your videos on my topic. got a 97%. came back to share this success story.
fun drinking game: every time he says dark reaction doesnt occur in the dark throughout all of his photosynthesis videos
ooooh, bad idea!
Amazing. Finally, education is adapting to the student and the student is utilizing computers and the internet, not an overpriced book, an uncomfortable desk, and a boring teacher. Bravo and cheers my friend. These "free" videos are much better than any science class I had at my extremely expensive four year college.
does anyone else wonder how Sal Khan knows everything about every subject in the universe🤔
Cuz he graduated from both Harvard and MIT!!
I wish who ever narrates these videos would be my teacher for every class he makes hard topics easy to learn!
My biology prof is going to be so pissed once he finds out I've been cheating on him...
I've never made a comment on youtube but I had to. This video is so good...I kept waiting for him to start explaining the Calvin cycle and when he was like, "and that's the Calvin Cycle." I'm like wow...I never learned something so easily before
we're all screwed
Waken ur right
Haaa lol. But #YouCanLearnAnything right?
Waken I am :/
yep basically
this is so very helpful, especially with studying for finals this week. you seem to have a gift of making things seem simpler than they are.
I was just reading this and its crazy how this is 11 years ago and I’m guessing u work in the medical field now.
I honestly don’t comment that often on videos but Khan academy has helped me so much with my studies, way better than my teachers do. And this does not only apply to biology but also how great you are at explaining other subjects concepts as well. Thank you for saving our mental health a day before our exams, I will never be able to thank you enough 🙏
This is a miracle... I actually understand what's going on. I need to watch more of these ;3; Thanks x1000
Great, I was trying to pay attention to the video on this and now I'm caught off in your channel.
Awesome drawings btw!
BitterSweetNitemare i feel the same... it all started when i was looking for videos on the krebs cycle... i could never get my head around it... but this guy explained it so well... then a few videos down the line led me here, and for the first time in my life i have a decent understand on the subject :) amazing
Words cannot express how grateful that I am for this video. I completely understand everything in my Honors Bio class! Keep making these videos because I know that I am not the only one affected by these. Thanks again!
through watching all your videos i have ended up falling in love with your voice. i associate it with understanding, and relief, and thus, love ;p
LMAO THA DOOR 🚪
@@lylah4944 HAHA NOO I have a crush on the organic Chem tutor it’s fine 🙃🤚
@@Bazbouza03 💀💀💀💀 LMFAOOOOO
Got my final exam on Monday... should've started watching these videos after the first lecture. These videos are so much clearer than any lecture I've had all year.
Thank god for this!!!! I have a bio test tomorrow, and this taught me more in 13 minutes than my teacher did in a week and a half!!!!
Thank u for being my teacher, I will change the world one day all thanks to u
I don't know how to tell you how much I'm grateful about this video
It is absolutely unbelievable how helpful these videos are. These people are wonderful at explaining complex topics. Thank you a million times over!
You are the best teacher I have ever listened to. You never disappoint me. Thank you and I wish you the best!!
You are the King, and the students are your People. We bow down to you!!
Also, Rubisco stands for RibUlose 1,5 BISphosphatase Carboxylase/Oxygenase. If you are asked about photorespiration, it occurs when rubisco (which is a very inefficient enzyme) binds Oxygen instead, which occurs quite commonly.
Landon Herm right.
you're incredibly talented at explaining seemingly difficult concepts. thank you so much for applying your talents like this, and for choosing to help so many people throughout their journeys toward knowledge. :)
bless you. i'm passing my biology test tomorrow thanks to this vid!
As someone studying Biology from home out of a huge folder with no tutor to help, this is a God send! Thank you so much for doing what you do you beautiful man, you!
you make the existence of my school teachers obsolete THANK YOU SO MUCH i'm all geared up for my grade 9 test now
thank you a million times from a desperate biology student from germany!
Out of the thousands of videos I've looked for in order to get some understanding (book & proffesor are not doing it for me) YOU have been the biggest help!! Thank you a million times!!! :D
🤯🤯🤯🤠🤒🤢
isn't it ribulose BISphosphate, instead of ribulose BIphosphate
You're right.
I say bisohosphate. It's how i was taught. Terms change, so as long as we know that... I think it sounds better tho.
Yeah I thought so too
omg i thought u were binging with babish for a sec
@@helenedemol4058 That's the best compliment I've received in a while
got a photosynthesis test tomorrow.... you are a god, thank you
omg thank you
i have an exam in 8 hrs!!
Jimin 👋🏽
leahtotally mindless143 yo army
+Nan Myint Myat Have an exam in 8 hours! haha
(same)
Deez nuts
In your mouth
it's amazing how much this video cleared up the calvin cycle for me! especially since i'm cramming for and honors bio test tomorrow ...
The BEST video I've ever watched about this topic!
I watched a lot of videos on this and this video helped me the best. Thanks!
Thank you. I've got my test tomorrow, and I'm watching this videos over and over again, with my biology book on my knees, trying to translate everything properly ^^ But I think I get it! Thank you very much for help! Greetings from Poland :)
I got a Biology exam tomorrow, I spent over hours to figure out the cellular respiration. Finally I spent around 30 minutes to watch the whole series of it in yous channel, and I get it now. Sad that my teacher sucks in explaining.
thank you for all the photosynthesis and cellular respiration processes videos!!! It really helped me from failing finals. To be honest, I couldn't understand what my biology teacher is teaching at all. Maybe it's just me, who knows. These videos taught me more than my biology teacher teaching in one semester. Big thanks to you sir Khan!!! Thanks for giving all of us knowledge!!!
Thank you! I missed my bio teacher's lecture last Wednesday on the Calvin Cycle, so this really helped, I've watched it about 4 times and taken notes off it, thank you!
The reason that they are so long is because he explains things in sufficient detail to give the viewer a full understanding of whatever is being covered; not just surface-level knowledge.
I've got a college biology exam in an hour and a half that will determine if I will pass this class... you just saved my life.
after i graduate, hopefully successfully, im going to donate, first thing to do, as much as I can.
khan academy helped through the pandemic. no doubt.
dark reaction is a misleading name.
Guys there is a video missing, which comes after 'photosynthesis: light reactions 1' but before this one, if you want to look at everything in order. The missing video is about cyclic and non-cyclic photophosphorylation, which is pretty important. Just search 'Photosynthesis: Light Reactions and Photophosphorylation'
Or... it's incredible how much you can learn in 13 minutes when you have a truly great teacher.
words can't describe how thankful I am to you!
Thank you for all your hard work..I cannot even tell you how grateful I am.
EDUCATE MEEEEE!!!!! I've been through over 10 of your videos, you are a beast. Thanks.
thank you. this was one of the clearest videos to refresh my memory on the calvin cycle even though it didn't even contain animations
Midterm in 2 hours and forgot my notes at home.. This guy is saving my god damn life!
Cramming for my AP Exam tomorrow, this really helps! THANK YOU!!
im in unimelb year one, thank you so much for your help. your interpretation is lucid and very very clear. it answers all my question that the book did not tell. thank you so so so so so so much!
i love you
Really great movie!
Explains it very well, however in my book of plant physiology it is said that: "The traditional view of the PCR cycle was that it did not require the direct input of light. These reactions were consequently referred to as "dark reactions" of photosynthesis. In the view of the fact that at least five critical enzymes in the cycle require light activation, such a designation is clearly not appropriate."
"These include glyceraldehyde-3-phosphate dehydrogenase (G-3-PDH), fructose-1,6-bisphosphatase (FBPase), sedoheptulose-1,7-bisphosphatase (SBPase) and ribulose-5-phosphate kinase (R-5P-K)"
It's a small, and not so important thing for everyday RUclipsrs, but maybe important so someone :)
Keep up the good work!
thank you soooooo much. i love this set of vedeos. i feel lucky cuz i foung this accidently. however now i don't have to worry about biology since there is the khan academy. thanks a lot. this is really helpful and very interesting to learn.
your videos are really helping me out to understand photosynthesis much better! being a private candidate and studying from homem you are like my personal tutor! thanks !
first and second are such rude annoying comments..this guy is really helpful
I don't know how you're doing it, but tonight I can finally sleep well because I'm not nervous for my exam anymore!
you're amazing. I've been coming back for you're videos for my biology HL exams and its si much easier to remember with all your diagrams. Thanks :D
Omg thank you!! I'm not even English but through you fantastic explanation I finally understand the Calvin-Cycle I was so confused with the Reduction-part ^^
Greets from Germany
SAVED MY DAY A ON THE BANK FOR PHOSYNTHESIS AND RESPIRATION EXAM THANKS
Before Khan academy I was sincerely convinced I would not even pass AP Bio. Now I'm starting to believe I may be able to achieve a B. Thank you Khan Academy!!!
man, this is more than i have learned in 2 lectures with loads of paper....
Its informational, you read the text book and then understand this lectures. It's start making sense
Your videos are amazing. Thank photosynthesis (and therefore also you) for existing.
thank you for saving my life and grades👌🏻
you're really great khan! please do keep on posting videos like this. it really helps.
There is a small error when discussing the reaction between RuBP and CO2. RuBP is Ribulose-1,5,-BISphosphate. Not (Bi)phosphate.
Thank you so much!! :D i have an exam on this stuff tomorrow and you saved me from absolute failure xD
I understood in this photosynthesis videos what I didn't in two 2 hours lessons. Either I am getting smarter at an exponential rate or Khan is absolutely amazing at explaining things. I would love for it to be the first option but... Oh well.
you are a great teacher. way to go. explained it better than my biology teacher at school. thank you
I smiled when he misspelled independent at 2:40. Even a genius like salmon makes human errors
THANK YOU SO MUCH! I wille cite you in my Nobel Prize speech :)
THANK YOU SO MUCH
I WAS STUDYING AND HAD ABSOLUTELY NO IDEA WHAT WAS GOING ON SO I WAS PANICKING BECAUSE I HAVE A TEST TOMORROW BUT THEN I FOUND THESE AND NOW I UNDERSTAND EVERYTHING AND IM SO HAPPY
THANK YOU
How did you do on your test?
Eta shotee amazing. Jay shob video jay aapnee banalay, aami ackon aamar Biology class pass korchi. Dhonobad.
i agree you are a genius ! this is the first time understand photosynthesis !
Tank you. For saving my butt for my botany final tomorrow, you rule Khan!
10th grade honors biology exam tomorrow. I love cramming ♥
Thanks! I really liked your videos that much that I started to see the ones that are not concerned in my clases xD
I'm learning it as a freshmen as well :) That's ok, everyone goes at their own pace :)
Wow!! These videos on photosynthesis has been very helpful. THANK YOU!
Your colors make my day better.
Thank you so much! my ap teacher totally confused the hell out of me... this makes so much sense!!!
ridiculous how good this is...thank you, thank you, thank you. I donated. I hope others do the same!
I wouldn't pass my tests if it weren't for you because I learn absolutely nothing in class.
OMG thankyou, my friend and i have to make a project on photosynthisis and i had no idea how any of this worked cuz our ap bio teacher sucks and this has been SO HELPFUL. thankyou. :)
Me too. But with a lot more details, like a l o t . But i seriouslly believe that knowledge is about building on a strong base, so prefer to watch these videos first to learn the main structure and then delve into !
finally! ! i understand what photosynthesis actually is.. you are a good teacher.. thank u so much
extreamly helpful, clears so much up for my test tomorrow
incredible !!!
now i can have a 20/20 on my test
thanks!!!
Wow, you are a lifesaver!!! Thank you so much for your amazing videos! They are so helpful, it makes learning very easy!
AP Bio test tomorrow boys?
yep
@@lukejones2904 i see you >:D
amazing, thanks!! this will help with my bio final today
I knoww what you mean, however maybe people will see this potential and in future our lectures will be in this format, i find them much easier to learn from, although a great deal of it is down to Sal's teaching skill.
THANK YOU SOOO MUCH!!!
i have a bio exam tomorrow and i did not get it when my bio teacher taught it. thanks to you im gonna pass (at least the parts you taught me :P)
Oh my goodness Khan. You are my hero.