Photosynthesis
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- čas přidán 6. 09. 2024
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Overview of photosythesis
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Does this guy know everything? From linear algebra, to algorithmic analysis, to probability in statistics, Boolean algebra, differential equations, and now bio chemistry... He does videos for the material in almost all my classes.
HE THE TRUE BIG BRAIN
He has a big platform which many teachers so that Khan Academy covers all topics in a very neat manner
yeah bro didnt you know? hes omniscent.
Man, Sal's a life saviour. He's helped me study the night before any test
Lol
Can we just appreciate how better he is at explaining photosynthesis than most of science major teachers?
And some people here on yt? >__>
Domingo Pachoco YES YES YES YES YES YES YES YES YES YES YES!
no I just can't
Lol, it's why i watch. So smooth and uncluttered delivery. And with terms and words students can relate to.
10000000000billion % agreed
Ok, it may be somewhat unlikely that the host/teacher/professor/ man speaking in this video will read this comment. However, if he does he should know that whenever I have a question about something I'm learning in college I almost ubiquitously check Kahn academy videos first.
Nearly all the other videos from youtube always seem to come up short in either presentation or consistency in a range of topics. This simple format and the way this is presented is so friendly.
So thanks.
I always try to learn it by kahn my professor sux
@@TheWSYNkatevy153 why tho
Yr learning this in collage???
Maiva La really 🙄🙄
@@TheWSYNkatevy153 calm down sir this is a CZcams comment section not Twitter.
I love how slow he goes, it definitely makes time for my brain to comprehend!!! Love Khan! Saving my GPA one lesson at a time
This guy’s hand writing with a mouse skills are amazing!
probably a stylus and a tablet though tbh
not a mouse, its a digital pen
Biology exam in less than an hour and thirty minutes. I have written all my own notes and decided "hey, I heard about these videos! Let me use them for a refresher."
Excellent work! You make it very relatable, and that's exactly what I need - the bottomline without flowery talk that my professor gives.
I also really love how clearly you speak - I'm in one of the university's libraries and left my headphones, but the transcript/subtitles are very clear without mistakes! I can still use these videos regardless of being in a library.
Yeah Wolf Spade, I get your point but totally I agree with you that's a great comment and once again thanks
U pass?
I love how everyone on this channel is really enthusiastic and loves what they do. The short moments when they start talking about how amazing something is actually make me excited.
I really love listening to Sal's voice. It's really friendly and upbeat and he makes learning these topics very enjoyable :)
I pretty sure he's talking very joyfully because he doesn't go to school every day and teach kids every single day.
Sitting at Harvard and studying via Khan Academy. Thanks a ton!
Where u now tho 😅
This dude is a Saint. I use a lot of his vids for guidance throughout my studies due to poor professors; and I’m always finding myself excelling. Thank You
my daughters in high school a freshman and he really broke this down in a way you actually understand it at many age groups
My Biochem final's in 7 hours and you're my lifesaver!!
Thank God for you videos!
My biology teacher sucks, and I haven't learned nor understood anything all year until now that I've watched your videos!
Thanks again!
Dude, I just want to say you are F**king awesome! I am in a bio 100 for non-majors and my teacher treats us like we are finger painters. I am 31 with a double major in psyc. and philosophy, and it is all a breeze. Yet, this man works in analogies like tow trucks and water pumps which make it not only stupid but hard to remember. Thank you for making it clear - you kick ass!
3 hours in biology class all this went over my head .....13:37 on Khanancademy I complety understand.
I love your videos. My parents were glad that I had found you here on my own, because they were going to suggest you to me anyway. I'm so thankful that you took the time to do this for your family. You've helped out a lot more people than you thought you would, I suppose.
The book I've read is outdated and I was absent when this lesson was discussed. Thanks Khan Academy!
Hope I could pass my biochemistry class.
Hello, I've been watching your videos for a couple of months now without putting a comment just until now. I just wanted to say thank you for making us understand stuff much easier compared to how our college professors teach us. I've watched you videos regarding cellular respiration until oxidative phosphorylation and it has been so much help in the Biochemistry subject course that I am currently taking. I just wish I've seen this video of Photosynthesis when I was taking up Botany as a subject course. Things would have gotten easier. My sincerest gratitudes :).
Yes, it's true. The second half of my personal bio course was spent on explaining a lot about the cell, and the prof said that photosynthesis and cellular respiration was the most difficult part of the course. Much, much more in depth than I ever remember doing in HS.
my daughter is a freshman learning now
I just read an article under the title "you receive what you give". The article is about "Salman Khan" owner of this channel and how he started this thing using Yahoo Doddle to explain math to his niece. He ended up getting support from Google and Bill Gets I really am impressed about this successful journey. ppl like you is what we need in this world.
I FREAKING LOVE KHANACADEMY!!! THANK YOU SO MUCH!!!! ^__^ YOU HAVE HELPED ME A LOT!
The teacher plays a major part in one's feelings towards Biology, trust me.
A huge shoutout to sal for making me understand everything so easily and making learning so fun. I owe him a lot.
I've used this dude's videos for literally like all of my biology courses he's so good
Yes
Khan is genius!! he knows everything. he help me in every subject be it physics chemistry maths and even bio!!!
You made me ace this portion of my exam. My teacher said I did an awesome job! Thanks Khan!!!
Dude!! I freaking Love you... 2 hours in Bio Lecture and only 14 minutes here and I totally understand your version. Thank you so much. Your a life savor... Or a biology savor lol
LEO/GER
lose electron oxidation
gain electron reduction
just another option
Because the reaction itself doesn't not need light (or photons). True it needs the products from the light reaction, but the dark reactions do not NEED the light to occur... hope that helped.
This video has been worth more to me than 2 weeks covering this in class. Thank you sir!
Oldest comment ?✨
Who could someone dislike this
These videos are the best
:)
They're usually disliked by idiots who would rather attribute such processes to God rather than learning how they really work.
Tom Craske I believe in both God has a hand in this and the science
***** First, how on earth does it prove him? Second, there are people who believe that all this is fake and "God dun did it!". They're the idiots that I was referring to in the first comment.
***** A car proves the designer because we can see two crucial things that you can't see with the "creation of the world, the designer and the design process. Show me those two _crucial_ pieces of evidence for your God hypothesis and I'll believe you. Until then, there is evidence for science and none for religion.
***** First, yes I would. Second, I came from two cells, not one. Do you even know how reproduction works?
photosystem equation : 6CO² + 12 H²O --> (CH²O)n + 6O² +6H²O So but does not produce water out of the equation
My mom is so happy that you've helped me get so high in my test! For only just 1 day of studying! Thank God that you are here!
Where are u now?
interesting to hear that dark reactions also occur during daytime, as they are dependent on the products from the light reactions phase. That means use and release of CO2 occurs in paralell. So I wonder what happens at night, when the light reaction phase stops, does the dark reaction phase also stop or just slow down? What is the share of dark reactions (dark phase activity or CO2 release) during daytime vs. nighttime?
im surprised that im not bored after watching 4 of your videos! and you have helped me with my biology class so much! thank you!
who is watching this in 2020 >?
Me from the dark future
Me from the post-election future
My education language is not even English but here I am watching, listening and learning.
2021
@@jpdickey7101 Yep 2021.
Awesome! Again, you took something the textbooks make so boring and made it fun and interesting. Thanx a bunch
hi, have been watching lots of these videos without my comment, just want to say thank you, I am going to do biology next year, your videos are very helpful.
You Sir are the world's greatest teacher! You have taught more people than any professor at Yale or Oxford! 233.051.558 views on your videos? You should get a nobel prize or something!
Helpful video on photosynthesis in typical Khan Academy style. Thanks
Every term and topic my professor taught us in class you covered it and explained it so well. I was using my question review sheet as a guideline for these videos and you answered all the questions. You're the best!
13 hours and 30 minuted till my gcse! I love you
AP BIO test tomorrow and u r saving me and teaching something my teacher hasnt been able to in 2 weeks! thanks!
Sal I've been watching your videos for a couple years now and your voice is no stranger to me but today was the first time I looked at your channel and saw what you look like.
I want to thank this man for making very good videos and helping me pass my exam. Thank you very much.
6:41 Wait so they do it in the presence AND absence of light,or do they breath in the access of light?
i love all of your videos on biology, they're so easy to understand!
Sitting at S.Carolina and studying via Kahn Academy, nice to see even Harvard kids are using this!
You learn this at all level, I learned it as a freshman in high school, a junior taking AP, and now a college freshman... Get used to it xD
This guy is cool.... and the fact that it is all free makes it all the more cooler!!!
i like that u always repeat what u've said so that after all the repetitions i just happened to magically remember everything u've taught
we dont need large amounts of tuition fee to have a decent education, thanks khan. more power!
Thanks to PHOTOSYNTHESIS, khan was able to make this video without photosynthesis, no video, and without this video i wont be learning this much...
you will learn about photosynthesis in intro bio, AP/IB bio, freshman in college bio, and probably more classes including anything about plants or sometimes cell bio classes too
Wow, these are even useful for 4000 level biology classes. Maybe I can understand my Plant Physiology a bit more clearly now. Thanks for this!
Son is having a hard time in class. They are studying photosynthesis and he didn't even know it was about plants...Ty for vid. It's helping me help him.
thank you so much for this! i will use what I learned for a powerpoint and definitely will credit you as its base, major source. what a lifesaver.
thank God for you! You are the rare bird in education industry - GOOD, TRUTH, BEAUTY,
Very well explained, thank you! :)
I like how this is 13:37 long.
Explain...
+TheNorth OrNah leet
LOL
Use 1.25/1.50 speed. With this settings you are more focused on what he says and obv faster. Thank me later.
His handwriting here (ON THE COMPUTER), is WAY better than mine on paper.
Biology test on Photosynthesis tomorrow ! Thank God for Khan !
Studying for a cellular respiration + photosynthesis midterm for first-year uni on Monday. I think you might have saved me. Wow.
What is the connecting substance between light reaction and dark reaction
ATP, NADPH, RuBP( Ribulose biphosphate) and CO2. The ATP and NADPH are necessary but doesnt ccme into play until later in the dark rxn ( further in the cycle) The cycle is initiated by the RuBP and CO2 by the enzyme rubisco (ribulose bisphosphate carboxylase). SO the RuBP is there, the ATP and NADH are used later and the CO2 kicks things off
You might have just saved my exam tomorrow...sooooo THANK YOU I OWE YOU MY LIFE!!!!! ... not even kidding
another good way to remember oxidation is:
LEO (losing electron oxidation) says GER (gaining electron reduction)
Leo says Ger
Light enters the chloroplast in photosystem II and this removes electrons, to make up for this loss H2O is split into H+ and OH- and 4e, these electrons are pumped from carriers, meanwhile all the H+ in the thylakoid is taken out of the thylakoid due to is concentration gradient, however the movement of electrons moving provide energy allowing H+ to be pumped back in the thylakoid,( now in Photosystem 1) NADP+ + e= NADPH, ADP + inorganic phospate = ATP, co2,nadph, atp in the calvin cycle=carbs
Khan Academy is the best vids to watch!! They change ur life 4 ever
Very Cool! I love Photosynthesising!
Do metabolic pathways please !
First bio final in college! Much appreciated!
Most people in comments : "My biology teacher sucks bla bla bla".
I haven't come across even a single comment that actually appreciates the process and feels awestruck how the world is so perfectly designed.
Thank you for saving my ass on every bio test
i wish every teacher was like you
learning SHOULD be a fun experience
I love your videos!!! but can you make your videos a bit fast paced?? Thanks!
Really appreciate what you're doing here! love your videos
thanks khan, i am reading material that is older than me(22) and it's very confusing. Your videos help me out a lot and glad to see you helping others. keep it uppp!
What about the equation 6h2o+co2+sunlight=c6 h12 o6+o2
For photosynthesis
Yep but you need a 6 in front of CO2
its 6CO2 + 12H2O + sunlight ------> C6H12O6 + 6H2O + 6O2
Thats carbon dioxide + water+ sunlight ---------> glucose + oxygen
Well... This equation is used when glucose is the substrate.. but the fact is apart from glucose there are many other substrates as well.. bdw its 6 co2
BIOC Exam in 20 mins...Thank god for this vid.
the length of this video describes how awesome this guy is. thank you so much!
I was so fucked before I found this channel. I actually stayed awake through your lecture!
My bio exam is tomorrow... literally learning photosynthesis at 12:00 at night
My Bio teacher had us watch several of theses videos and they do help. My Algebra 2 teacher has us watch these sometimes
u r WAYYY better then my lazy bio teachh !!!
who's watching in 2019
Me :P
You.
me
Stfu
me
What program does he use to write thesesw things out?
Smooth draw 3. Idk if you still care...lol
@@xBustedHeart i do thanks
Biology final in the morning #yolo.
Can't you see I'm living it up?
Thanks for this video. You saved me.
Khan acedmy explains everything very well
how can u be so smart and so useful at the same time?
Have a test today and this really helped!!!! Thanks you are awesome!!!!!
Thanks so much this is helping me with my Alevel Biology Exam!!!
Thanks !!
from London!!
Nice Video Overview of photosythesis That You Share , So Very Nice Thanks You
study as you go, dont just wait for the test. it especially helps to read the chapter and take notes before you go over the notes in class, that way those notes just solidify the information you already learned on your own
i think i love you.! THANKSS keep doing these videos helps a lot sometimes teachers just do not know how to teach thats when you go to KHAN for help
Thank you Khan for making such important videos for generations and generations to come. But since not all of those who view ur videos are native English speakers, wouldn't you agree that making some videos showing the latin roots (prefix, suffixes, etc) would help them and the native english speakers as well remember those complicated biology terms by breaking them into pieces? That would help also with the GRE, SAT and TOEFL reading/verbal sections! Thanks Khan.. and Allah bless your soul :)
IB Bio tomorrow!! Thank you Khan and Good luck fellows!!
i have a question for the viewers what are you watching this for? Is it for the information or a project?Or is it for school/uni? Because i find all of Khan Academy's videos super helpful but also the subjects they handle are pretty complex. People around me (perhaps includes me) constantly state what we see as high schoolers is beyond our capability. Does anyone else have to know all these before going to university (or majoring)?
This makes so much sense compared to my teacher tryin to explain it to me. thanks.!
Very informative video. I was confused about a couple parts - When a molecule gives away an electron, its charge becomes more positive right? So wouldn't the molecule go to higher energy states when it is more positive?
If that is the case, I don't understand how NADH gives away electrons and produces ATP by going to lower energy states. Please explain.