Diffusion and osmosis | Membranes and transport | Biology | Khan Academy

[@mcl720]

0:00 solvent review 2:28 diffusion introduction 6:29 diffusion with solutes 8:16 diffusion vocabulary 10:55 diffusion with membrane 17:12 osmosis

[@apollo193]

Thank you so much!!!

[@gaiusmarius4112]

Vielen dank

[@Daevoz]

thx

[@okoyechioma690]

Mitchell Lenneville thanks .....I sometimes don't like how he beats about the bush without going straight to the point

[@alyssamarie3527]

Mitchell Lenneville I love u

[@itsmesebah832]

I've learned more in this 19 minute video than the entire hour with my bio teacher, thanks.

[@nataliev5165]

lmao same

[@vasishthaserrattan3276]

it's me sebah! same here

[@AngelAngel-rg1wd]

same here

[@alisaiem5941]

Exactly

[@demetriotorres1210]

it's me sebah! 2 weeks

[@callessantana2688]

God bless the Whole Khan Academy and its lecturers/providers. You are making this world a better place. Planting hope into the youth by educating them

[@elfadilfado7259]

true.

[@anycolouryoulike8567]

true.

[@ch0s0_lvr]

true.

[@NubaidRaiyan-kc1wb]

true.

[@reef99red]

Lol, "hopefully you found that useful and not totally confusing". Are you kidding? That is the clearest, least-confusing, explanation i could ever imagine.

[@rolandoperez6612]

reef99red EXACTLY

[@BEV_shorts]

Osmosis is the diffusion of water as a solvent from a low concentration of solute to a high sconcentration of solute, through a semi-permeable membrane. thanks sal!

[@toober57]

I just needed your comment. Thank you.

[@mosesjonathan9168]

Thanks for making me Understand the more

[@nvngkhinpang2076]

thank you most for this hehe.

[@iwannadie1861]

Tyyy ❤️👀

[@Fulanito-tf9ee]

Thankss

[@mypeaceluv3]

I cant even tell you how much this helped me. My biology teacher does this thing where she zips through the notes in a week and then gives us problems on the test we didnt learn. This makes it so simple for me to understand, breaking it down like this. your amazing, thankyou.

[@esi8285]

i swear,you are the best teach ever! my biology teacher is good,but in these cases where i wasnt in class and i have no idea hor to explain these stuff to myself,youre a life savior. god bless your soul!!!

[@wrkin90044]

They weren't kidding when they said Khan Academy is good at explaining things!

[@johnapplepeed]

?

[@iwannadie1861]

Yep but who

[@DyslexicIm1]

You learn more from this guy in 18 minutes then what you learn in a week at school. Thanks.

[@rougeassasin5701]

A week? Dude I am learning IGCSE Biology and my teacher "covered" the whole chapter in 45 minutes and I am still confused.

[@aishwaryajayan7687]

You've got a fun way of explaining things without losing the boudary!!!I have understood topics in a much better way!!!You're the best Sal!!!

[@OliviaPlunkett]

My teacher should just show this and save himself the confusion and time of making a lesson. I literally learned more from this short(ish) video than I did from a whole biology unit. This was a great test review too!

[@maddimaher6367]

Wow I might not actually fail my test tomorrow

[@dora42]

Ha me2

[@annmaryabraham7322]

idk why but i just love how colorful the whole thing is, its one of my favourite things about these videos tbh

[@ajlakameric2684]

honestly, this is one of the rare videos on the channel where everything was overly generalized, and the explanations were not-so-amazing

[@soxpuff]

You introduce concepts WAY better than my teacher. This 19 minute vid was concentrated with clear information and I understood much more than when my teacher spends an hour jumping from concept to concept.

[@cobiobrien3038]

Wow I've been watching videos all day to study for finals. But your videos are by far the most clear and easitest to understand. Thank you so much

[@iwannadie1861]

Wow this comment was 7 years agooo 😂💀👀❤️

[@alisakhan96]

i just love the way this person makes a difficult topic simple

[@carendavis7426]

Thank you! After hours of textbooks, notes, and lectures, it was majorly confusing. But your nineteen minute video? Completely makes sense now.

[@TheCreativeNick]

7:42 *Balanced, how all things should be.*

[@godschild9071]

Omg thank you. You made everything so clear I was not confused at any part of the video gonna ace tht test tomorrow.Thanks :)

[@adrianhutanu6181]

same, this does really help

[@YoungRippa]

yes

[@wasiantalks]

did you ace it

[@faisalahmadshaikh9499]

@@wasiantalks aren't u 6 years late?

[@ifiehill1789]

God bless you. That really helped a lot. My biology teacher was really confusing but you straightened it out.

[@rachelreynolds3326]

I really like him as a teacher. He repeats words when he’s talking.

[@maureenmccormack5989]

I have a test on cells, heredity(etc)tomorrow couldnt remover anything about this. Super helpful. You explained ThisWAY better than my science teacher ever could

[@reynahdz9647]

Wow great vid! why can't all teacher be like this guy???? =(

[@AJJUCAS]

He is.

[@Sapphiirex]

Very clear and straight forward; thank you so much! I finally have a clearer understanding of this topic for school.

[@letsshaketheworld]

You just saved me an hour of studying notes into 20 minutes! I love this!

[@MCzoom1357]

i have been very sick for almost two weeks, and the day i get back I have to take a test on this. My class has been going over it for two weeks, so I had to learn it all in one day. I watched this video and got an A on the test, while everyone else got a b-c on it. Thank you so much.

[@MelTee38]

Your video helped me soooo much to finally understand diffusion and Osmosis!! I'm studying for my CCHT test and these are the related questions I had the hardest time with.....until you explained it in a way I could understand. Thank you so much!!!

[@ProfessorPeasant]

In the first 4 minutes alone, you taught me more than my teacher could manage in a week. Exceptional, subscribed :)

[@ilovebiriyani101]

I take Bio in 8th grade so it makes things harder to take it earlier. What makes it worst is that our teacher CANNOT TEACH. Instead of showing examples, all we do is take notes. After watching this video it enhanced my knowledge of diffusion and osmosis. Its SOO much easier now and less complicated. If I had Sal as my teacher my life would've been SO MUCH EASIER.

[@iwannadie1861]

Wow this comment was 8 years ago...wooo

[@ilovebiriyani101]

@@iwannadie1861 I'm in college now and nothing has changed since this comment loool

[@brittani.alyssa]

I have been reading about semi permeability, diffusion, and osmosis for nearly two weeks now. I felt like all my resources were giving me conflicting responses. I get it now!!!!!!!!!! :)

[@Mafieldgirl13]

Thank you so much! I don't comment on videos but I have to thank you. My biology teacher this year makes no sense! please don't ever stop making videos.

[@IshrakAnjum]

I have a test tomorrow on this topic and this video really helped me understand what osmosis and diffusion is. It actually helped me by looking at the drawings . I also found it interesting. :-)

[@estebangutierrez4316]

me too

[@IshrakAnjum]

ok, hope you all did very well :)

[@estebangutierrez4316]

thanks!

[@Bernadettefull]

A little long winded but I like the repetition - makes good for test prep. You have a nice voice too which makes it easier to keep listening. Thank you.

[@vanessaescalera4117]

wow that was a whole lecture in 18 minutes. amazing. this is why i donate lol. AMAZING!!!!!!!!!!!!!!!!!!

[@pinkcherryblossomful]

we spent a week trying to learn this and my i didnt understand.... now i just learned it in less than 20 minutes. how about i just drop out of school and just watch khans videos all day?

[@mp4masterpiece]

this has to be the most clear explanation of diffusion in my life.

[@littlesadlerable]

*mindblown* why can my teacher teach it this simply

[@nicolepowers5935]

I have read this several times in my A&P book and saw several videos and did not understand.. This video totally makes sense. THANK YOU!! : ))

[@Priyanka-ir2tb]

where ontario teachers have failed to teach students properly, you have come in and done their job, so thankyou!

[@vpcreationsunlimited]

HI Sal, I've been watching your videos since your started and now still watching....I love your channel and I am learning so much for Anatomy and Physiology than listening to a boring lecture for 3 hours !!

[@White0Rose0]

this guy has taught me more through sciences than ive learnt in 4 years studying them!

[@Nicasweets23]

THANK GOD for Khan Academy, I have a biology test coming up and was so lost. I watched this video and it makes sense, keep doing your thing, Saul!

[@superladybree1432]

Thanks so much I have been in class 5 weeks now and I have learned a lot but; diffusion and osmosis kept going over my head but with your help I GOT IT ! God Bless you !

[@heyandreww]

this helped me out a lot! Thank you for taking the time to thoroughly explaining Diffusion and Osmosis! I didn't understand my professor at first but I got it after watching this video. Two Thumbs Up!

[@YesForNo]

The thing is that english is not my language and I clearly understand what he's saying. I just listened all proces of photosynthesis and I feel illuminated about it.. Now I'll explain it to my teacher :D

[@herbpixie]

Thank you! Doing an anatomy and physiology experiment on osmosis and diffusion tomorrow, and I now have a much better understanding of the principles behind it.

[@ouiemfrs4373]

I love it when he just calls a molécule 'this guy' ")

[@david1401170]

gosh this guy explains everything with such ease and simplicity. its awesome

[@hellokittyx958]

After watching this, I got 90% on Osmosis and Diffusion test. Thank you!!!! Credit definitely goes to khanacademy!

[@DracoonTheDarksigner]

How does he learn EVERY SINGLE subject that I need help with? He always has exactly the subject that I need.

[@emptypockets413]

i really like the way you break down the subject matter for non-bio nerds. sending a big thank you to you!

[@Kcrossman6]

im a year 9 (form 3) in New Zealand, Mount Maunganui College and I just wanna say thanks. that was reaaaally handy, it will help me loads in my exams.

[@kennethbarrancas5068]

the Khan Academy guy know everything💯

[@Msalazar20100]

u make everything make sense.. i bet if i watch all of your videos i would ace my bio class

[@rolandoperez6612]

I love you. I watched this 45 min before taking my bio quiz. Please keep doing this. Is there anyway I can support? This is free and I learn more from you than I do in College.

[@whatrtheodds]

I'm studing at home and was ment to go on a break, but i was actully enjoying your teaching style so much i watched into my break, so clear, thankyou so much!!!! You rock.

[@Gucci19zoo]

that's the best lesson i've ever seen in my life, with colors and clear explanation smooth voice wow wow wow c'est vraiment le top du top

[@prettyreckless2700]

i study english at uni so nothing scince related however i love learning about science in my spare time and these colourful videos are awesome for that so thanks a lot!

[@netanel296]

I always found osmosis really hard to understand but you made it a bit more clear to me, thanks.

[@cochran3369]

this was awesom! so helpful! i was all upset bc ur teacher required us 2 watch this but it was acually helpful!!!!!!! THNX!

[@lisatavor]

I absolutely love your videos! After reading text book information and struggling to retain it, your videos have helped seal it into my brain and pretty much saved me (the exam will prove my theory anyway!!! Cheers!

[@MiaLilly]

It is not confusing but very helpful :D Thanks so much..This is probably the first time I understand what Osmosis or Diffusion is! ..I didn't understand anything what my teacher tried to explain me :)

[@republicbmc7966]

Million times better explanation than my boring IGCSE text book!

[@XxsuperstudlyxX]

I thank you so much for going into detail as to why all this stuff happens, my brain won't just accept that something just happens and that's the way my teacher explains it, but you take more time to explain why it happens, why diffusion occurs the way it does and it helps me a lot and helps me comprehend it better :) thank you

[@aodhanlynch9462]

Yay an adult who has took a biology degree and can teach unlike my biology teacher who relies on textbooks and the internet

[@iLordNooob]

Bio Exam Tomorrow Thank You So Much! You are a LEGEND! May God give You A Prosperous Life

[@Talafenon]

Very nicely done, my 5th grader now understands Osmosis and Diffusion. This is much better than I could have done and he is now excited to do his science project for school.

[@imtiyazhussain8873]

The video was 19 minutes long and I didn't even realise. But thanks, this was so useful. Love the colours too.

[@SyedHousein]

Just looked this over for my first quiz in Anatomy and Physiology 2. Thank you for this explanation!

[@yatogami2919]

Doctor Syed same but for A and P 1

[@boeing747200lr]

Reading comments on Khanacademy videos has always been fun.! Keep up the good work Sal.

[@kailashjagessar8906]

i was about to drop my bio class, everything seemed so difficult, then i stumbled upon this wonderful video, and i have so much more confidence. THANK YOU SO MUCH!!

[@MrMcBruisycheeks]

Thank you, this really helped. I liked how you explained exactly why the solute goes from high concentration to low concentration until equilibrium is reached. I never understood that part. The illustration that was particularly helpful to me was the one of sugar molecules blocking the openings in the membranes.

[@pinksplodge886]

This is a brilliant video. Loved the black background- found it helped with focusing on your diagrams. Many thanks!

[@lofiwithshamique]

this is the first time ive been able to understand this topic!!!! THANK YOU

[@mariambabar1175]

plz don't say your not good...your awesome ....and my teacher ......can't explain ...even I don't want to 👍👍👍👍👍👍👍 keep up the awesome work

[@Jsuriano]

OMG you're so easy to understand, I so totally subscribed to you, I'm a visual learner and this right here is perfect, I love it because you explain it in its simplest form.

[@darthrain875]

I LOVE YOU. i understand these videos so much better than my professors at my university

[@kirztenabbyo.bautista5615]

Thanks for clearing my confusion about this topic. You made it easy to understand, thank you Sal!

[@andrina926]

GOD bless you! I was so frustrated with this chapter and you have have explained it so simple and clear. You saved me! thank you soooooooooooooooooooooooooooooooooooooooooooooooo much

[@cmac6551]

This helped immensely. flunked my last test on this but retaking it soon. Im sure this helped!

[@Thechrisnews]

This is what my social studies class was like. We had fun the whole class period, and had a short quiz the next day after watching a video after school.

[@oshitomaha]

there's only one god, his name is KHAN ACADEMY. Thanks you're a god!

[@parkerwhoknows9723]

This guy is not a god.He knows math,that does not make him a god.Even if it's a joke,it's not something to joke about it.There is only one God.Plus that's the name of the school,not the guy.

[@oshitomaha]

and who the fuck are you tell me who's my god or who's not? This guy saved me from failing a test, there for, I consider him a god. Just like you have your own god, which you've probably never seen or heard (Jesus), let me have mine.

[@MichaelMurd]

Funny Summer You're a moron. At least there is evidence that his 'God' exists and achieved something positive in the world without murdering millions of people.

[@parkerwhoknows9723]

GOD DID IT FOR US!Okay geesh!I'm 12 just trying to undersand this stuff,saw his comment and replied!No reason to call me a moron!God saved me!Atleast I know I'll be walking streets of gold while you burn."Deny me in front of your friends,I'll deny you infront of my father."Not exact but close.

[@saminskibart]

+Funny Summer You may believe in one god and others in more than one so you can't say there is only god if others believe differently. You can believe that but you can't say someone is wrong for thinking someone else as a god. God may or may not exist but other may not believe in the same as you do.

[@AnEscapedMind]

Excellent video. You teach on the level of genius because your vision is high enough to fully understand the topic and you are able to downgrade, or lower, or descend into the thoughts (previous visions) that created your highest vision.

[@saimashino]

i love how he refers to containers and stuff as this guy and that guy :D. Purely awesome video

[@junk11111111]

At his website it lists out the university level courses (science, math, computer science, etc) in a more organized listing than looking through here on youtube. Very straightforward links from there back to youtube.

[@sixnicks]

THANK YOU ! :) we have a test tomorrow and i was really confused about osmosis and diffusion. but now i understand it. thanks alot.

[@lauren8charlotte]

nothing has ever helped me more than this video right here. thanks soooo sooo much :)

[@Khaledhisham]

GOD I WISH YOU WERE MY BIOLOGY TEACHER !!! I LOVED IT THANK YOU ! i dont know how to thank you really keep on uploading videos !!! THANK YOU !!!

[@crazya1361]

omg I actually learnt something from a KZbin video wow ,this helped so much...just got a new subscriber 😄😄😄

[@SamiaNutritionistphsiotherpist]

This is the kind of video that really deserves a like, subscribe and a comment not that cringe videos I HOPE I PASS I HAVE A PAPER TODAY ACTUALLY WISH ME GOOD LUCK 👍 🙂 🙃 😩 😪

[@SamiaNutritionistphsiotherpist]

What even is this guys name, such a legend

[@NoxMedicant]

please, please, PLEASE ! make more biology videos!! superb explanations..

[@debaixodocobertor]

Oh my God I have a bio test tomorrow and I was freaking out because I couldn't understand osmosis and diffusion. This was one of the best classes I've ever had, thank you so much!!!!

[@EuphoricFrenzy]

wow all of a sudden everything makes more sense. thanks khan academy!

[@carolinevigna6311]

this dude has saved my grade so many times

[@angelaloureiro6318]

Thank you so much:))))) I have a test tomorrow and now this finally makes sense

[@richardhobson197]

Brilliant Video!! Really clear to understand.

[@Fin-the-frog]

I have a bio test tomorrow. Thank you so much, this feels more clearer now 🙏🙏

[@maddiefossitt1207]

I have quiz on this topic on Wednesday for my high school bio class and this really cleared up my confusion. Thanks!

[@AllthingsAene]

OMG Khan Academy where have you been all my life? this is so helpful, thanks a lot.