Overview of glycolysis | Cellular respiration | Biology | Khan Academy

[@ilaila3504]

this is bang on the level needed for my course, human cells at higher biology level SQA. I have spent two days trying to get understanding of this process, so i will pass on a message that if you are struggling like i was - you will need to watch this process over and over again until it starts to make sense. thanks mr khan

[@Everchanging88i]

Definitely amazing how effective your lessons are. Overview i think is one of those things that are really not appreciated by the vast majority of teachers, and yet an understanding of the whole is at the heart of learning, and understanding anything. Your lessons because of the clarity they give of a concept, help establish the idea firmly.

[@khashayarmastoori1]

Thank you, you could explain it in 13 minutes but it took my lecturer an hour .

[@charlotteparker2051]

No literally my professor spent two hours explaining this

[@JohnFernandez414]

Salman Khan, once again saving me on the bus ride to school before a test.

[@Lycroo]

Me too！ XD

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John Fernandez he becomes a hero for everyone 😆

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@Robert Morgan It's been two years i doubt he'd remember

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@@veryrisku1119 it's been 1 year i doubt you'd remember!

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@@thesmiler119 Its been 4 months I doubt you'd remember

[@thatweirdo93]

My IB bio teacher loves you, he used your videos in class all the time! I have my HL exams tomorrow, and because of you I'm so much more comfortable with the material. Thank you, keep it up!

[@24jonasluv]

I really appreciate your time and effort in making these videos! It really shows your personality! I am an AP BIO student, and my teacher never goes over the material, but thank God for khanacademy! Thank you so much! I hope you realize you are saving millions of high school kids around the world :) Thank You!

[@TomoyoTatar]

FINALLY I UNDERSTAND AFTER HOURS OF WATCHING WEIRD THINGS ON KZbin

[@kalef1234]

He knows science too??!!!! I love khan academy.

[@新野心]

I really feel like giving him bro fist each time i listened to his video, to thank him. :D

[@sparkleandshine2494]

Understood way better than when my Bio teacher went over it, thank you Khan Academy!

[@shikinhlm]

Hey!!! Thank you so much for the clear explanation. It really helps in my understanding. You teach way better than my lecturer. He spent 1 hour teaching but I don't underdstand anything. Whereas, you only spent about 13 minutes and I am able to understand almost everything. Once again, thank you for being a great teacher. Totally appreciate it. :)

[@hbarker216]

Thank you for making this video. I am taking Bio 111 in a Community College, I have shared this video with some of my classmates to help them out. I feel that this explanation is very easy to follow and will help me learn. When taking notes in class this doesn't make sense because while we are writing everything down, there just isn't enough time to understand what I am writing! This way is almost like I am listening to my teach again and I can do so several times until i understand the concept.

[@TheCanadianGuy08]

DUDE YOUR A LIFE SAVER thank you soooo much for this vid I've got a bio mid term coming up and my prof is extremely hard to pay attention too these cycle vids are gunna help me so much

[@memeyaa3780]

this saves your life when you have a test tomorrow and you dont know what the hell was happening in class, now i can totally slay my test tomorrow -hopefully lol- thank you very much though

[@baileyedwards4530]

The background is white and this hurts me.

[@udkmyname5251]

Aww it's okay

[@bjones5491]

lmao

[@mariep5227]

He was really struggling to write ADP

[@yanda6732]

You're the kind of people who pay attention to the wrong things during class 🤣 7:00

[@evrist1500]

i was laughing so hard ngl

[@Wannaepitome]

Thankyouuuu sso much sir am from india and i was preparing of medical entrance exam that is( neet ) am really struggling with plant physiology chapters no doubt we have also a lot of good teachers but i dont know am not able to get it i don't know how much vidoes i have seen but then i suddenly remembers your channel and you r my life saviour and thnkyouu soo soo much sirr❤❤❤❤lots of love from india

[@supaahflyy]

explained it miles better than my uni professor. Mind you i ended up just rope learning it and still getting a Distinction but i didnt actually understand the process. Thankyou!

[@jacobvs98]

Thank you so much! Better explanation than my teacher's one..

[@mk-vp8bg]

my bio teacher requires us to know SO much...like how glucose is split into PGAL -.- there are so many steps in between, ahhh so nervous for my test tomorrow.

[@DinaAwd]

Same here

[@fahtihaishak]

Same ARMY same ...

[@maggiewang5285]

mood

[@DannyBridie]

2 yrs later and you’ve passed your nervousness on to me. Yay biology!!!! Yeah!!!

[@hannahdivic28]

Sameee test in 2 days and I’ve tried learning so much and am still so confused why is this so complicated

[@shonaragibson]

Have you done a video diving deeper into the enzymes/intermediates/regulation of glycolysis? Would complement this nicely and would help out with the more complex aspects students may need to know. Love the videos, keep em coming! :)

[@Bbarbiexox]

I have a major micobio exam on monday you have taught me what my instructor attemped for 3 hrs in 15 mins or less you rule!!!

[@CasieLeanne]

For an auditory learner this really helped me understand Glycolysis more, Thankyou.

[@arvinian01]

ETC - means " end of thinking capacity"

[@smaina1499]

You just saved my academic life. Thank you. ❤😭

[@SharletC]

Really wanna thank Khanacademy for all the videos made. Even my school (Republic Polytechnica, Singapore) uses your video as a resource for us to have better understanding. :)

[@raider968]

I don't know why but my brain shuts off the moment I lay my eyes on a text book.. But thankfully, there's Khan to save the day.

[@DeejM92]

You're one of a kind, and I actually love studying Biochemistry with you even though I despise it. Thank you so much! Hugs from Saudi Arabia (:

[@carmelb99]

Very helpful. Many people tried to explain it to me, but nobody explained it as well as you did. Thank you so much :)

[@appslover1232123212]

Thank you so much for dedicating your time making these videos. They are so informative and helpful, and it honestly feels great knowing that if there is not a science concept I understand in school, there is usally a video here to help me out!!!

[@HamnaAzhar7]

appslover1232123212 he literally never disappoints!! Whenever i find a topic difficult, i come to Khan Academy and the problem is solved :)

[@jacobthuesen7006]

Great lesson! Biology exam tomorrow and this helped alot! Thanks! You're over 9000 times better to teach than my biology teacher!

[@yoojunnguyen9866]

Thank you so much. I have an exam on Tuesday and this is just what I was looking for. It makes a lot more sense then sitting and reading my book for hours trying to figure what the heck is going on.

[@Coyoteari]

I learned more from this video than from the hour and a half cell bio lecture I had to sit through on it

[@sylvanpine]

3:15 "Phosphoglyceraldehyde really challenging my spelling skills here" LOL 😅

[@hullah3000]

if you set the speed to 0.5, he sounds drunk lol

[@XxlethalDJxX]

AHAHHAAHAHA

[@123tomandadrian]

hahaha!

[@Rushil_Sudunagunta]

he sounds like a little girl when speed is set to 2

[@mohammadabed4041]

lol

[@MagentaFerret]

Rushil Sudunagunta he sounds high

[@Jade808]

I have a Biology test tomorrow and I have understood nothing this entire unit until I found your video. I finally get Gylcolysis and Cellular Respiration, so thanks! :) ~Jade808~

[@attiya5471]

I was just wondering, I mean if you wanna share about where are you in life Now?

[@metabog]

One of the best channels on KZbin, hands down. Thanks, and respect!

[@holfletc]

I thought I'd never understand this stuff... ever. This is helping immensely. Thanks

[@PotionsMaster007]

omg i might actually pass my medical biochemistry exam, we get a cheat sheet so YES!!!

[@jesussosa3238]

Did you know that cheating is Academic Dishonesty XD JK!!!

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Jesus Sosa lol

[@rachelcarney8976]

can't relate

[@schrodingerscat1556]

What happened man??? Did u graduate yet. I find it really interesting to reply to older comments

[@PotionsMaster007]

@@schrodingerscat1556 lol yea I passed and went on to get 2 more degrees lol

[@FaerieDust]

I just have to say, thank you for these videos! I can't even begin to explain how helpful this is - all of your videos, really. I learn so much, everything's so amazingly pedagogical, you're awesome!

[@Miauwmiauws]

He makes me feel that I understand it, unlike the classes I follow. Thank you!

[@Suh6727]

It really helps if you remember the steps before looking at the big picture.

[@vitalal]

thank u for this! u so much better a teacher than my actual teacher

[@sKHANcreative]

KHANS are always the best ........................ Keep it up we all are your students and you are our best teacher

[@uvinp]

I have watched few videos of Khanacademy. some are amazing. but this one is not so much. It's 1glucose + 2 ATPs + 2NADs + 2 Phosphates ---> 4 ATPs + 2 NADHs + 2 Pyruvates. thnx.

[@Leeanne1967]

WOW for the first time I actually understand this...a thousand thank you's!!!!!!

[@214aleksandra]

i think you are genius, because you made everything so simple, and nature is simple but other people made it too complicated because they want to feel smart or special, but thats not real point of learning

[@vXSuperSonic]

its crazy seeing he made all these vids 5 years ago and people r still watching as if he just realised the vids!! :)

[@akshta10145]

This man is my life saver. Thank you!

[@Jasminaa011]

I learned more here than I ever did with my teacher :'] I love you Sal.

[@jajafelipe19]

great reviewer for midterms in biology. no need for rereading notes.

[@Wandering.Studios.]

Words cannot describe how thankful I am for your videos, specifically the cell energy ones.

[@rockett2mann5]

I watch your videos to study cram... Works everytime

[@SlyPolanie313]

This video can and will make you understand Glycolysis. Thank you very much

[@3squareddesigns]

Thank you, you are such a better teacher than my college professor!

[@SapporoMagokoro]

Watched this video high IT ALL MAKES SENSE AND IS SO INTERESTING

[@SabinaLovee]

thank you so much! i have a bio test tomorrow. you should come teach at my school!!!

[@ccoott]

Kahn academy basically taught my entire grade 12 year.

[@sheilay98160]

This helps SO much! Thank you!! I think I'm ready for my quiz tomorrow now! (hopefully)

[@PrettiUkhti]

im very happy i found your videos. you explain the topic so that i can understand how everything works.very very good!!!

[@seni701]

Khan you are my hero im addicted to ur videos i love the may u teach guess what i got A+ for my immunology exam i love you and thank you million times pls do not stop to teach us : - ))

[@attiya5471]

Hey, I was just wondering, I mean if you wanna share where are you in life Now?

[@radiacto]

basically the 2 phosphates are taken from the 2 ATPs so that glucose can be phosphorylated, and a step that isn't shown is that as a result of this, 2 molecules of triose phosphate are created and 2 molecules of ADP, because the 2 phosphates have been taken from both ATPs, therefore there are only 2 phosphates left so ADP is produced because it is di-phosphate. Hope that helped

[@omgxd4]

Thank you very much! Much more understandable than the week of classes my teacher spent on this SMH. Well at least now I get it!

[@지지님-k3b]

He has like the most helpful videos on cellular respiration thing

[@CraftyPirateJim]

Revising for my biochem resit exam, this is brilliant, why didn't I know about this before?!

[@awanturka]

I actually believe that I can pass biochemistry exam :) you are golden! :D thank you so much!!!!!!!!!!!!!

[@karolinap1246]

best video on glycolysis I found so far!thank you helped a lot.

[@kelseyblankenheim4134]

This video helped me understand glycolysis a lot better. Thank You!

[@Penicillin1928]

OMG, the best tutor I ever had!

[@DanielaOvares]

Thank you soo much this really helped me a lot. One thing though on 7:10 you still left it as ADS instead of ADP :x just had to point it out. Great video though I have a test today and I feel more confident after watching this.

[@madcrazii88]

youre my new bio teacher. thank you.

[@Mareikimi]

Thank you sooooooooo much, this is really, really helpful. Don't know what I would do without all the videos!

[@sydney3685]

Currently watching this the morning of a quiz I had a week to study for

[@luisaceo00]

nice video, but you forgot to say, when explaining the diagram at the end that the two PGAL molecules are added an extra phosphate group in order to produce 4 ATPs instead of only 2.

[@jonnytown12]

You sir are the man!!! You are simply a life saver

[@megantran19]

I like the white background :] it's a nice change from the black haha a lot brighter and happier!

[@jigglybandit]

Actually, contrary to your explanation, the loss of a hydrogen is not reduction, but Oxidation. However, overall nice job, I'm having a test on this in my freshman bio honors class tomorrow and it helped.

[@JoeyBagADonuts8]

the addition of ATP. One Phosphate is added onto the glucose and one on the fructose during investment stage. One P from each ATP since 2 are used in investment

[@270103023]

wow ! super helpful! much better than the 3D video! thanks a lot!

[@SathyaSaiKiran]

very nice work, i really understood it which i was not able to since 2 months.

[@chaseyoung1800]

kinda surprised me, the color of the background. but hey, im not complaining. you are GREAT man.

[@MrMattthemanc]

@MJfullofGrace - The anwer ro that question is that the first part of glycolysis uses 2ATP (breaking down glucose 6 carbon molecule to 2 3-carbon molecules ( intermediates which are then converted in a multistep process to pyruvate and for each pyruvate formed ATPS are produced. Therefore ther is a gain of 2ATP molecules. Body is constantly producing ATP don't think of it in isolation, think of body as many processes interconnected to produce energy to survive.

[@graceniamh2538]

Lactate is produced during anaerobic respiration. He was showing aerobic :)

[@kandiikrushh3253]

I doubt you remember but is lactate the product of lactic acid being Released ?

[@swordguilds]

@spicame I'm not sure about your first question but for your second question (I assume from 2-phosphoglycerate to PEP), the OH group on the terminal carbon has to leave to form a double bond with carbon 2 but at this point carbon 2 has 5 bonds and rather than breaking the chain or releasing its ~O-Pi, it releases the hydrogen. So water is released.

[@BellaaRosee]

Thank you SO much! You're absolutely amazing! If I do well in biology this year, I will owe it all to you!

[@sadgirl-hm3gq]

2021

[@jamesmay1164]

@Grace Niamh Lactate IS produced during anaerobic respiration, correct, but this was showing neither aerobic or anaerobic respiration. This was demonstrating the process of glycolysis. The first phase in BOTH aerobic or anaerobic respiration.

[@Fabela86]

You saved me with your awesomeness! Thanks for breaking this down for me!

[@charlieisabeast100]

There are 4 phases - After Glycolysis is the link reaction (the conversion of the pyruvate molecule into CO2 and a 2-carbon molecule called Acetylcoenzyme A). This is vital information as in the 'Krebs cycle': this enzyme is introduced into a cycle of oxidation and reduction reactions that yeild some Atp and a large no. of e- for use in the e- transport chain (to synthesise ATP with water as a bi-product). Oh and do not forget to mention that it is phosphorylated glucose that splits into ...

[@lifeDotGov]

good job, but one correction.. you're adding 2 hydrogens(not 1) to reduce nad+ to nadh.. because a byproduct of nadh is h+ ion, which gets sent to the cytolplasm.

[@ifahimtariq]

Sir please add caption in urdu also.so pakistani student can easily learned.I appreciated you on your work.

[@bigIy]

you can turn on captions in the video :)

[@gupreetbajwa5516]

Thank you salman!! tom is my exam!! wish me luck

[@estkparamore]

you're my new teacher!!!

[@Sh3lbyify]

Wow! You've made this so easy to understand! Thank you so much!

[@Nytrox3000]

The phase you call "pay off" is called the oxidation stage. the one before is photophorylation.

[@FirehorseCreative]

He forgot the 'u' in 'Pyruvate' as well- but it doesn't matter- he had me at 'phosphoglyceraldehyde' lol. What wonderful tutorials.

[@lizhengyao3672]

Such clarity in explaining. I always enjoyed it.

[@pizzachew]

@MrEnriqueag Glycolysisis works with two pyruvates derived from a single glucose molecule. An NAD is reduced into an NADH for each of these, therefore we have two NADHs as products.

[@cdaniellemalimban]

CrashCourse vs. TED-Ed Winner: CrashCourse TED-Ed vs. Khan Academy Winner: Khan Academy CrashCourse vs. Khan Academy Winner: Khan Academy 1st Place - Khan Academy 2nd Place - CrashCourse 3rd Place - TED-Ed :)

[@inkbery4473]

Danielle Malimban I feel like Khan Academy is best at preparing students, Crash Course is more for the fun of knowledge, but it still supplies students with a helpful guide, and TED-Ed is purely a "the more you know"-type channel, not meant for studying off of... So that's why Khan Academy is better for you, probably studying, right? 😊

[@geegi163]

you saved my life and GPA!

[@Xrh232]

thank you so much for the videooo :) what a pity for me, i wished i had stumbled upon your channel before my biochem exam. i really love your vids and the explanation