This old video has been updated here: ua-cam.com/video/L-osEc07vMs/v-deo.html. *We also like to pin clarifications or address any issues in our videos.* We greatly appreciate the comment here about salt! While a salt compound (NaCl) is larger than a water molecule (H2O), we do not mention how salt dissociates in water. The ions are generally not able to pass through the membrane unassisted. We mention the salt not traveling through due to its size, but it is not the size of it that it is the issue due to this dissociation. In the updated video, this has been fixed.
I had no idea what my biology teacher is saying for 2 weeks and with this 9-minute video I have understood the meaning of osmosis. Thank you very much.
I am a 4th year college student, and all throughout my entire life's science and biology classes, I could not understand Osmosis until NOW. I really thought this was a little kids channel tbh, but it really works to help save college careers. THANK YOU!!
Hello there! It has been 10 years since I have stepped foot inside a classroom. I must say, these videos have been absolutely life saving! I am in my fifth week of summer classes since I got out of the military and these videos have helped tremendously. Thank you kindly for sharing your wealth of knowledge with us all! Ciao!
I am a biologist and a nurse that's why I highly suggest this teachings to highschool and even college students because it greatly simplified their lessons. great job amoeba sisters, also you have a nice catch on "stay curious"! kudos!
just discovered your channel and absolutely love it. I have a fifth grader participating in cell biology quiz and science jeopardy in a few months at the elementary science olympiad meet. your videos explain so many tough concepts so nicely, especially the DNA,RNA etc
I get my students attention with the science music videos, but for true depth and understanding? NOTHING beats the Amoeba Sisters! Thank you so much. Your videos are a great resource for my Honors biology class.
My teacher had us watch your mitosis video so I went here when we started to learn diffusion and osmosis. Turns out that was going to be our assignment the next day. Our test is tomorrow and I feel really great on the topic osmosis thanks to this video. I got pushed to the front of the classroom to read my osmosis answers on what would happen if red blood cells were put in different solutions and I did really well! I am usually not one to like or understand science well or much but the analogies and graphics help me learn so much better. Thanks to you I might just ace my test tomorrow!
I can't imagine why anybody gives any of the Amoeba Sisters videos a thumbs down...they must not feel very good about themselves I guess. The videos are cute, direct and accurate. I have benefited as a teacher, as have my students. Thank you!
I'm beginning to do some coursework on osmosis in secondary school at the moment in biology and this was a fantastic video to review and learn off. Thank You.
Thank you so much for making ALL your subjects fun. It makes homeschooling 1,000 times more fun and easier. And, thanks, also, for keeping your videos current with frequent updates. Please, don't stop!
Thank you @Amoeba Sisters!!! For the first time in almost thirty years, I finally understand #OSMOSIS to the point where I can explain it to a seven year old. Y'all are the absolute best.
I love these amoeba sisters..they explain much much better way than our teachers do....after watching this video I fully understood the osmosis and it's complex concept.... thank you amoeba sisters
We were watching this in our Pre-AP biology class in my 8th grade class, and I'm just glad we're doing this and not reading passages and answering questions! This makes biology fun. Thanks!
If Hypertonic solutions have a greater solute concentration, and water moves to the hypertonic side (ie. the side with higher solute conc.), then why do hypertonic cells lose water and shrink?
I'm a non traditional student nearing middle age. These videos explain concepts in such an easier and more entertaining way than my $200 biology book. I read that if I can't sleep at night! I did feel bad for that poor slug...they are cute. 😊
finally after 12 years of study in school and high school I went to University, and thank you God that i found this clearly video about Osmosis ! youre amazing
أنس باغريب We do have an osmosis practice handout set: www.amoebasisters.com/handouts but not any quizzes---that would be a great feature. We have seen some teachers start using our videos in quiz sites like EDPuzzle and Schoolfy. These free sites allow teachers to create quiz questions that grade themselves from the video, and we may look into expanding into that someday.
Great question! So usually polar molecules do have a tough time getting through the membrane, but since water molecules are so small, they can directly pass through the membrane. For efficient transport, however, they can travel through channels in the membrane called aquaporins.
Thanks, amoeba sister for making me understand the topic so well. I have seen many other videos regarding this topic but this one is the best amongst all of them !!!!!!
Shivam Gandhi Thank you for the suggestion, Shivam! We're finishing up our genetic mini-series right now, but we'll definitely consider your request after that!
I have to say, i looove your videos! Never did i think i would look forward to videos on biology, but i do! Keep it up!! They are so helpful for my biology course so thank you so much! :D
u guys r so helpful I have my mid term biology exam tmw which includes osmosis which I have never understood from my teacher but u guys made me understand thx for ur help amoeba sister I love u so much
I have a question, what if the patient is dehydrated and you give them distilled water for IV? Would their cells still burst or would that actually hydrate them?
Omg your videos are just awesome!!! So much fun to learn and make science seem less boring than I figured! And the sense of humour is what keeps me watching ur videos with much enthusiam! (Tht romeo and Juliet act is hilarious) you guys really are great amoeba sisters!!! Thanks a lot and pls keep making more of those fun scientific tutorials!
I am a Science teacher for 6th through 8th grade and use your videos to help me teach all three grade levels. Love everything you do! Lately I have not been able to download any of the handouts. Are these no longer available? I hope they are because they are extremely effective in helping students stay engaged during your videos. Thank you for all you do!
Hi, Diana! Thank you! The handouts should be all on www.amoebasisters.com/handouts- the individual handouts are there as PDF files. Perhaps switching browsers may help? We've heard that switching to Chrome or Firefox (instead of Internet Explorer) can be helpful. Let us know if you still have any difficulty.
Hi! okay so i am really confused because hypertonic means high number of solutes, and water moves to the hypertonic side. but in the video it says that hypertonic cells shrink and hypotonic cells expand. So I have a big biology test tomorrow.. can anyone help me out?!?!??!
+Stefi Andrade Hi, Stefi! So water does move to hypertonic (higher solute concentration) areas. I think the confusion may be---is it the cell or is it the solution that is hypertonic in your question? If the cell is hypertonic, then yes---net water movement would be going in it (and it would swell) and the solution is hypotonic. That's what would happen in the example of red blood cells being surrounded by pure water. But if the solution is hypertonic ---then water will move to the solution and out of the cell so the cells will shrink (in that example, the cells are hyptonic compared to the solution). Water movement is towards hypertonic areas in both examples. Here is our osmosis GIF which shows cells being placed (left to right) in a hypertonic, isotonic, and hypotonic solution. That means the cells would be hypotonic, isotonic, and hypertonic (left to right). 3.bp.blogspot.com/-Dyi99CT4gUw/VXH9A_-hXXI/AAAAAAAABaE/FF9rhKqZSHY/s1600/Osmosis%2BRBCs%2BGIF.gif
I have enjoyed your video. My biology teacher made us watch this for homework. One thing though, in 2:26, shouldn't there at least one salt molecule aka solute in A so it could be balanced? Without that one solute the ratios would vary. After you move the water molecules to side B, the ratio would be 3:6 which would be simplified to 1:2. For side A after that change, it would be 0:2 instead of 1:2. 1:2 would be the ratio for side A if there was at least one solute to be begin with in that area.
Matt Lawand Hi Matt! Unfortunately, we do not. :( We have not found a good way to make them accessible to teachers without also making them accessible to students. In order to prevent any cheating, we have chosen to not provide any answer keys (and, therefore, did not make any). We admire your ability to self-teach, though! We had not thought of that, and we will definitely have to reconsider this. P.S. Petunia lives in Dallas! :D
Really great stuff! Shows in video form the same examples I gave my students in class--REALLY helped with their understanding of the topic! Keep up the great work!!
For my homework I had to write a articulate and it was my first day a biology class but watching ur videos made it 10 times easier and guess what I got 100/100 I got it all right thank you❤
Awesome.😄😍👍pls tell me how is a slug and a fish a semi permeable membrane ??? Isn't it necessary for osmosis . If it is not what about humans .....pls pls solve my doubts
Amoeba Sisters, you are AWESOME. please, i looove your videos. The people who disliked your video, come on! This was one of their first videos. they did REALLY well and their style of explaining is awesome, they know that nobody likes lectures, but we like the cute animations and jokes. Lets appreciate the amoeba sisters :)
Rhonda Williams Thanks so much, Rhonda! We are actually on iTunes U where you can download our videos, which may be helpful if UA-cam is blocked, as iTunes U is completely free. itunes.apple.com/us/itunes-u/the-amoeba-sisters/id718923638?mt=10 If you get a chance to rate us on iTunes U, that would be wonderful!
You can download UA-cam vids from this site- en.savefrom.net You just have to paste the url of the page and click download. You can also choose the quality of the vid, say 360p, 720p or whatever's available.
Why very large difference between 2D and 1D calculation was introduced ? How long time is necessary to achieve the steady state ? Can we roughly speculate the time for the steady state by some way ?
Love, love LOVE this video. Great explanations!! But there was an issue playing it. It got stuck the first time you mentioned how pure water isn't in IV bags. I was able to move the slider beyond and make it work, but you may want to take a look at it. Thanks so much!
M R Harrison Thanks for letting us know! Sometimes, because we have these in HD format, they can get stuck when streaming based on the current internet connection. One thing that might help is to click on the little gear at the bottom right when the video is playing and to try changing the "quality" to something a little lower like 360P. It will allow it to stream faster and might help! If it still keeps happening, we have our videos available for free download on iTunes U. :) Thank you so much for watching!!
Hi Amoeba Sisters! I have a question regarding the handout for osmosis. In the handout, gummy bears are used as an example of osmosis. From what I have learn, osmosis requires a semi permeable membrane. If gummy bear expands due to osmosis, does this mean that gummy bears have semi permeable membrane?
Hi amoeba sisters ! My professor referenced your video for our nephrology class and it was great thanks ! I having trouble understanding convection. Any thoughts on that ?
+Laura Neck It actually lowers the freezing temperature for it to become ice! Here's some great info on that: van.physics.illinois.edu/qa/listing.php?id=30163
thanks. what if the plant has its root submerged in water containing rocks. are the rocks giving salt to water making the water hypertonic then sucking out water from the plant root ? the plant root is submerged in water already, hydroponic.
What happens after osmosis? Is the water not trapped on the solvent, and even if it can break free wont another water molecule take its place, so even if there is more water on the solvent rich side, their is still only the same amount of "free water". So how does the cell actually benefit if the amount of free water molecules doesn't actually increase.
AlexDC93 Great question! It's all about the water concentration. Take the root hair cells. Initially, when a plant needs water, the root hair cells likely have a low water concentration. When it rains, that water saturates the soil. The water concentration is greater in the soil so it moves to a lower water concentration (higher solute) into the root hair cells until equilibrium is reached. This new equilibrium will be beneficial to these root hair cells. Many plants can pump solutes into their root hair cells to help adjust the amount of water that travels into them. Many plant also cells depend on being a little hypertonic to their surroundings to help them maintain turgor pressure.
+clippy clop turgid means something that has an interior pressure (usually of water) pushing up against the cell wall. It has to do with turgor pressure. Flaccid means a plant cell that is lacking the amount of water it needs to support itself If a plant cell were placed in a solution hypotonic to the cell (where the solution has lower concentration of solute) then water will go from low con to high con, and will flow inside the plant cell. This will cause the turgor pressure inside the cell, making it turgid. Unlike animal cells, plant cells need that kind of pressure, and will not burst because it has a sturdy cell wall. However, if the plant cell were placed in a solution isotonic to the cell, (an equal concentration of solution), then not as much water will flow into the cells as the plants need. They may start to wilt, leaving the plant cell flaccid. I hope this helps!
What if the solutes are neutral? Will water still move to the side of higher concentrations of solutes if the water doesn't react chemically with the solute at all?
Amoeba Sisters: Great video, but as an English Teacher, I have to point something out: "Wherefore" does not mean, "where." "Wherefore" means, "why." Nevertheless, you all should keep up the good work
absolutely AMAZING video! Loved how y'all went through each step and went through every detail, and the examples were very helpful. The video was also very entertaining!
***** Thanks, Olivia! This is one of our favorites---we went a little longer than we'd like, but we tried to do a lot of examples. We appreciate the encouragement!
Soumil Sahu It's one of the longest words we could find that sounded pretty complicated. It's a Latin word that appears in some literature works. It's defined as "the state of being able to achieve high honor." Nothing to do with osmosis, but we thought it fit right in there with something challenging to master. :)
This old video has been updated here: ua-cam.com/video/L-osEc07vMs/v-deo.html. *We also like to pin clarifications or address any issues in our videos.* We greatly appreciate the comment here about salt! While a salt compound (NaCl) is larger than a water molecule (H2O), we do not mention how salt dissociates in water. The ions are generally not able to pass through the membrane unassisted. We mention the salt not traveling through due to its size, but it is not the size of it that it is the issue due to this dissociation. In the updated video, this has been fixed.
Amoeba Sisters, I
Amoeba Sisters: I love your old videos. PLEASE PUT THE ONES YOU UPDATED IN THE ORIGINAL VERSION TOO, PLEASE!!!
I had no idea what my biology teacher is saying for 2 weeks and with this 9-minute video I have understood the meaning of osmosis. Thank you very much.
take a shot every time she says "water"
Ethyl coma
Yooo😊
Drink water everytime she says "water".
Yea and I’m the 100th like
We've made a few changes to our osmosis video for optimal awesome. Be sure to update any embedded links as the old one will be phased out!
please... make... MORE!!!!!! (O)_(o) ☺☺♥♥♥ Amoeba Sisters Forever ♥♥♥☺☺
Your kidding. Right?Shannon Aust
Kakashi-T48 don't hate. Sure it's boring to some people but let fans be fans, like me
***** I stopped after "science is awesome"
Naveed Khan Lol
we watch you guys in biology class and i could never thank you guys enough for all you do! thanks for making studying ten times easier!
Ryan Keiper same in my class
Pajin
indeed
Ya same
We too
I am a 4th year college student, and all throughout my entire life's science and biology classes, I could not understand Osmosis until NOW.
I really thought this was a little kids channel tbh, but it really works to help save college careers. THANK YOU!!
Hello there! It has been 10 years since I have stepped foot inside a classroom. I must say, these videos have been absolutely life saving! I am in my fifth week of summer classes since I got out of the military and these videos have helped tremendously. Thank you kindly for sharing your wealth of knowledge with us all! Ciao!
So glad to hear that---wishing you great success in your endeavors :D
I am a biologist and a nurse that's why I highly suggest this teachings to highschool and even college students because it greatly simplified their lessons. great job amoeba sisters, also you have a nice catch on "stay curious"! kudos!
+Jericho Cruz Thank you!
just discovered your channel and absolutely love it. I have a fifth grader participating in cell biology quiz and science jeopardy in a few months at the elementary science olympiad meet. your videos explain so many tough concepts so nicely, especially the DNA,RNA etc
my nursing school sent us this video to watch via canvas. thank you so much. it cleared out so many questions i had. took some notes. much love
This is such an amazing video. If it weren't for you guys, I swear I would've failed my biology exams for grade 9 in three months
I had so many questions on this topic, I LOOKED EVERYWHERE, than I saw this, and it is so helpful and fun to watch! Thank you so much!
I get my students attention with the science music videos, but for true depth and understanding? NOTHING beats the Amoeba Sisters! Thank you so much. Your videos are a great resource for my Honors biology class.
pinks4life Thank you so much!!
I'm from switzerland and I never ever understood all this biology stuff in school but then I found your channel! *-* Thank you guys, u help me a lot!
anina_25 Wow! Switzerland! How cool! Thanks for watching! :D
I'm in college and this video explained osmosis better than any teacher/professor I've ever had. thank you!
Katlin Schmieder Thank you so much, Katlin! We had a blast making this video, and we are so glad it has been helpful!
My teacher had us watch your mitosis video so I went here when we started to learn diffusion and osmosis. Turns out that was going to be our assignment the next day. Our test is tomorrow and I feel really great on the topic osmosis thanks to this video. I got pushed to the front of the classroom to read my osmosis answers on what would happen if red blood cells were put in different solutions and I did really well! I am usually not one to like or understand science well or much but the analogies and graphics help me learn so much better. Thanks to you I might just ace my test tomorrow!
did you end up passing your test?
I can't imagine why anybody gives any of the Amoeba Sisters videos a thumbs down...they must not feel very good about themselves I guess. The videos are cute, direct and accurate. I have benefited as a teacher, as have my students. Thank you!
I'm beginning to do some coursework on osmosis in secondary school at the moment in biology and this was a fantastic video to review and learn off. Thank You.
Thank you so much for making ALL your subjects fun. It makes homeschooling 1,000 times more fun and easier. And, thanks, also, for keeping your videos current with frequent updates. Please, don't stop!
Thank you @Amoeba Sisters!!! For the first time in almost thirty years, I finally understand #OSMOSIS to the point where I can explain it to a seven year old. Y'all are the absolute best.
Soo informative! A lot of these terms are foreign to me and your ability to simplify such a complex process is amazing. Thumbs up!!!
My teacher showed this to us in class...
Now I MUST watch all videos!
:P
telly man georg pajin
All teachers need to make lectures like this, i'm actually having fun learning this!
***** Thanks so much, that is completely our goal! As well as trying to keep the talking part as brief as possible. We appreciate the feedback!
I love these amoeba sisters..they explain much much better way than our teachers do....after watching this video I fully understood the osmosis and it's complex concept.... thank you amoeba sisters
We were watching this in our Pre-AP biology class in my 8th grade class, and I'm just glad we're doing this and not reading passages and answering questions! This makes biology fun. Thanks!
+Chew Craft Thank you so much for the feedback! It really keeps us motivated!
Pajin
I cannot express how grateful I am to you. I think I might cry in joy knowing about your channel.
Thank you so much for this amazing teaching resource! I love how you explain the process through interesting examples that are relevant to kids.
If Hypertonic solutions have a greater solute concentration, and water moves to the hypertonic side (ie. the side with higher solute conc.), then why do hypertonic cells lose water and shrink?
I'm a non traditional student nearing middle age. These videos explain concepts in such an easier and more entertaining way than my $200 biology book. I read that if I can't sleep at night! I did feel bad for that poor slug...they are cute. 😊
finally after 12 years of study in school and high school I went to University, and thank you God that i found this clearly video about Osmosis ! youre amazing
the most helpful channel for education ,, thanks for channel's developers
but .. is there any links for practice quizzes ?
أنس باغريب We do have an osmosis practice handout set: www.amoebasisters.com/handouts but not any quizzes---that would be a great feature. We have seen some teachers start using our videos in quiz sites like EDPuzzle and Schoolfy. These free sites allow teachers to create quiz questions that grade themselves from the video, and we may look into expanding into that someday.
Who needs to go to lectures when I've got your videos! Thank you! You have made this so much more clear for me!
Thank you so much for this video I have a test on osmosis and cell organelles tomorrow and this really helped me understand the concept. Thanks! ❤️
Cramming for my test and this really helped! I love the way you explain this.
Helping me and my Science teacher showed my 2nd-period class this! Amazing and helped me learn Osmosis.
You guys are helping me out so much! Lots of thanks all the way from New Zealand!
You show the water molecules passing directly through the phospholipid bilayer. What about polarity?
Great question! So usually polar molecules do have a tough time getting through the membrane, but since water molecules are so small, they can directly pass through the membrane. For efficient transport, however, they can travel through channels in the membrane called aquaporins.
EMILY HIXSON z
Thanks, amoeba sister for making me understand the topic so well. I have seen many other videos regarding this topic but this one is the best amongst all of them !!!!!!
Can you please add genetic disorders and everything in the human body? Like a clip for each system?
Shivam Gandhi Thank you for the suggestion, Shivam! We're finishing up our genetic mini-series right now, but we'll definitely consider your request after that!
Please make more videos :) I definitely will ace my biology class with all your videos. I am a big fan of your channel now!!!
YOUR WAY OF EXPLAINING THE CONCEPTS IS REALLY APPRECIABLE..........
I have to say, i looove your videos! Never did i think i would look forward to videos on biology, but i do! Keep it up!! They are so helpful for my biology course so thank you so much! :D
Thank you so much, Angie! We really appreciate the encouragement! :D
u guys r so helpful I have my mid term biology exam tmw which includes osmosis which I have never understood from my teacher but u guys made me understand thx for ur help amoeba sister I love u so much
Cutest video I have ever seen explaining osmosis. Huge hugs from a fellow science nerd.
Reginald Finley Thank you so much! Osmosis is one of our favorite topics so far.
Sweet voice and cute cartoon, that's unique about this channel👍🏼
Liek if u cri everytim about the saltwater fish
you spelled cry wrong :)
+Memestreamer Inc. su sed
+Memestreamer Inc. rip in peace nemo :(
i cry for the slug ahaha
N3FF_RIOS And no one cares.
SOO THATS WHY MY GOLDFISHES DIED 6 YEARS AGO?
mine did that to just satrted floating...
yeah SAMEE
Did u put it in saltwater?
Goldfish are freshwater fish, so if you put it in saltwater... Then yes.
Well that’s awkward
I have a question, what if the patient is dehydrated and you give them distilled water for IV? Would their cells still burst or would that actually hydrate them?
Omg your videos are just awesome!!! So much fun to learn and make science seem less boring than I figured! And the sense of humour is what keeps me watching ur videos with much enthusiam! (Tht romeo and Juliet act is hilarious) you guys really are great amoeba sisters!!! Thanks a lot and pls keep making more of those fun scientific tutorials!
Nghhj
I am a Science teacher for 6th through 8th grade and use your videos to help me teach all three grade levels. Love everything you do! Lately I have not been able to download any of the handouts. Are these no longer available? I hope they are because they are extremely effective in helping students stay engaged during your videos. Thank you for all you do!
Hi, Diana! Thank you! The handouts should be all on www.amoebasisters.com/handouts- the individual handouts are there as PDF files. Perhaps switching browsers may help? We've heard that switching to Chrome or Firefox (instead of Internet Explorer) can be helpful. Let us know if you still have any difficulty.
Hi! okay so i am really confused because hypertonic means high number of solutes, and water moves to the hypertonic side. but in the video it says that hypertonic cells shrink and hypotonic cells expand. So I have a big biology test tomorrow.. can anyone help me out?!?!??!
+Stefi Andrade Hi, Stefi! So water does move to hypertonic (higher solute concentration) areas. I think the confusion may be---is it the cell or is it the solution that is hypertonic in your question? If the cell is hypertonic, then yes---net water movement would be going in it (and it would swell) and the solution is hypotonic. That's what would happen in the example of red blood cells being surrounded by pure water. But if the solution is hypertonic ---then water will move to the solution and out of the cell so the cells will shrink (in that example, the cells are hyptonic compared to the solution). Water movement is towards hypertonic areas in both examples. Here is our osmosis GIF which shows cells being placed (left to right) in a hypertonic, isotonic, and hypotonic solution. That means the cells would be hypotonic, isotonic, and hypertonic (left to right). 3.bp.blogspot.com/-Dyi99CT4gUw/VXH9A_-hXXI/AAAAAAAABaE/FF9rhKqZSHY/s1600/Osmosis%2BRBCs%2BGIF.gif
+Amoeba Sisters Thank you so much!!!!!
I have enjoyed your video. My biology teacher made us watch this for homework. One thing though, in 2:26, shouldn't there at least one salt molecule aka solute in A so it could be balanced? Without that one solute the ratios would vary. After you move the water molecules to side B, the ratio would be 3:6 which would be simplified to 1:2. For side A after that change, it would be 0:2 instead of 1:2. 1:2 would be the ratio for side A if there was at least one solute to be begin with in that area.
thanks very much for this great video.also,l'd like to know if you made videos for osmolarity and tonicity?
abdelrahman abuelnaga Thank you! We have not yet, but we may look into that in the future.
HOLY SHARKS!!!!!!!!!!! Your video helps soooooo much. U teach explain soo much better than my teacher does. make more. THANK U!!! ya'll r the best
rlsasitfvtvdfdffgghgggghj
Howdy from Dallas! Excellent video and handout! Do you have an answer key to the handout for us self-taught folks?
Matt Lawand Hi Matt! Unfortunately, we do not. :( We have not found a good way to make them accessible to teachers without also making them accessible to students. In order to prevent any cheating, we have chosen to not provide any answer keys (and, therefore, did not make any). We admire your ability to self-teach, though! We had not thought of that, and we will definitely have to reconsider this.
P.S. Petunia lives in Dallas! :D
Really great stuff! Shows in video form the same examples I gave my students in class--REALLY helped with their understanding of the topic! Keep up the great work!!
Do more videos!! This is my first video I saw form your Channel & it's Amazing!!
got a biology exam tomorrow and these videos have literally saved me, thanks!
For my homework I had to write a articulate and it was my first day a biology class but watching ur videos made it 10 times easier and guess what I got 100/100 I got it all right thank you❤
❤❤❤
Thanks for the videos. Are awesome!!!!! Do you guys make videos for chemistry?
I love you Amoeba Sisters. I just watched this Osmosis video and I think you are great teachers. I am subscribing. Have a nice day.
+Christopher Bope Thank you!!
Awesome.😄😍👍pls tell me how is a slug and a fish a semi permeable membrane ??? Isn't it necessary for osmosis . If it is not what about humans .....pls pls solve my doubts
I loved this video I am in college and this helped me understand a lab that i missed. how ever do you have one for Diffusion. thanks
SARAH CLOPINE Thanks so much! We do not have one on diffusion---yet! But soon to come, we hope. :)
That would be great. I am hoping to see more from you.
***** That would be great. Hope to see more from you soon.
got that diffusion video yet? been 3 years now
Amoeba Sisters, you are AWESOME. please, i looove your videos.
The people who disliked your video, come on! This was one of their first videos. they did REALLY well and their style of explaining is awesome, they know that nobody likes lectures, but we like the cute animations and jokes. Lets appreciate the amoeba sisters :)
ratio+l+carti better
This is perfect!!! No stupid wannabe metaphors trying to explain the process and making everything complicated. Thank you thank youuu!!!!!
Love the videos for my science classes. I just need to figure out a way to show them since NYC DOE doesn't allow you tube
Rhonda Williams Thanks so much, Rhonda! We are actually on iTunes U where you can download our videos, which may be helpful if UA-cam is blocked, as iTunes U is completely free. itunes.apple.com/us/itunes-u/the-amoeba-sisters/id718923638?mt=10 If you get a chance to rate us on iTunes U, that would be wonderful!
You can download UA-cam vids from this site- en.savefrom.net You just have to paste the url of the page and click download. You can also choose the quality of the vid, say 360p, 720p or whatever's available.
Why very large difference between 2D and 1D calculation was introduced ?
How long time is necessary to achieve the steady state ? Can we roughly speculate the time for the steady state by some way ?
Love, love LOVE this video. Great explanations!! But there was an issue playing it. It got stuck the first time you mentioned how pure water isn't in IV bags. I was able to move the slider beyond and make it work, but you may want to take a look at it. Thanks so much!
M R Harrison Thanks for letting us know! Sometimes, because we have these in HD format, they can get stuck when streaming based on the current internet connection. One thing that might help is to click on the little gear at the bottom right when the video is playing and to try changing the "quality" to something a little lower like 360P. It will allow it to stream faster and might help! If it still keeps happening, we have our videos available for free download on iTunes U. :) Thank you so much for watching!!
Hi Amoeba Sisters! I have a question regarding the handout for osmosis. In the handout, gummy bears are used as an example of osmosis. From what I have learn, osmosis requires a semi permeable membrane. If gummy bear expands due to osmosis, does this mean that gummy bears have semi permeable membrane?
Hi amoeba sisters ! My professor referenced your video for our nephrology class and it was great thanks ! I having trouble understanding convection. Any thoughts on that ?
+Amoeba Sisters why is it that when salt touches ice its makes it less slippery , like when they salt a road?
+Laura Neck It actually lowers the freezing temperature for it to become ice! Here's some great info on that: van.physics.illinois.edu/qa/listing.php?id=30163
Amoeba sister...we love your good pieces of work...Love you sisters.
THERES ONLY ONE!! YOU NEVR HEAR THE PURPLE ONE TALK DUH
Thank you for teaching "higher solute concentration" ... as a chemist, I applaud you! Great videos! I will send my students here. : )
hey I have a question how come when you put salt on ice the ice turns colder??
idk._.
Toy Chica are you also here because of science hw???
Undertale Lover yup XD
welcome to the club, friends
yup
I have a question: the water molecules move to the other side where salts are is because the water molecules like salts?
thanks. what if the plant has its root submerged in water containing rocks. are the rocks giving salt to water making the water hypertonic then sucking out water from the plant root ? the plant root is submerged in water already, hydroponic.
that must have been ok, because seaweed can grow inside seawater (hypertonic water)
golden pothos, bamboo are the plants
What happens after osmosis?
Is the water not trapped on the solvent, and even if it can break free wont another water molecule take its place, so even if there is more water on the solvent rich side, their is still only the same amount of "free water".
So how does the cell actually benefit if the amount of free water molecules doesn't actually increase.
AlexDC93 Great question! It's all about the water concentration. Take the root hair cells. Initially, when a plant needs water, the root hair cells likely have a low water concentration. When it rains, that water saturates the soil. The water concentration is greater in the soil so it moves to a lower water concentration (higher solute) into the root hair cells until equilibrium is reached. This new equilibrium will be beneficial to these root hair cells. Many plants can pump solutes into their root hair cells to help adjust the amount of water that travels into them. Many plant also cells depend on being a little hypertonic to their surroundings to help them maintain turgor pressure.
I am a biochem major and found this video very useful! Makes everything make sense ahah
Awesome video !!!!! I love it ! It really helped me for my Bio 1 test !!! Thanks amoeba sisters !
Lola Kengen Glad we could help out! Good luck on your test! :D
does pure water travel to areas of high concentration when you drink salt water? Is that why people say not to drink salt water?
Please make a video on ASCENT OF SAP
Can someone explain what turgid and flaccid means? And how does it relate to hyper/hypo tonic....?
+clippy clop
turgid means something that has an interior pressure (usually of water) pushing up against the cell wall. It has to do with turgor pressure. Flaccid means a plant cell that is lacking the amount of water it needs to support itself
If a plant cell were placed in a solution hypotonic to the cell (where the solution has lower concentration of solute) then water will go from low con to high con, and will flow inside the plant cell. This will cause the turgor pressure inside the cell, making it turgid. Unlike animal cells, plant cells need that kind of pressure, and will not burst because it has a sturdy cell wall.
However, if the plant cell were placed in a solution isotonic to the cell, (an equal concentration of solution), then not as much water will flow into the cells as the plants need. They may start to wilt, leaving the plant cell flaccid.
I hope this helps!
+Saduni Rajapaksa (Sad One) Thankyou, this is really helpful!
Do you have a video on finding water potential?
You may of just saved my biology grade... THANK YOU :)
I love this! The cutest drawings ever make it so fun to learn science!
Keep making videos i love the artsiness your videos arent cold and sterile like most science videos
Deja Pierce Thank you so much for the feedback, Deja! We're so glad it was helpful to you! :D
Excellent video, very thorough and i really enjoyed the animations! thank you very much!
This was SO cute! And educational. Thanks so much for making studying fun for me!
What happens after the water molecules dissolve the salt? Do they move back?
I love your videos. They make biology fun.
What if the solutes are neutral? Will water still move to the side of higher concentrations of solutes if the water doesn't react chemically with the solute at all?
I love your videos! I learn and also have a good laugh. The faces they make on your videos are so cute :D keep it up! And thank you.
#ijustatemyself
I loved this! please do more of these :D! Seriously this is just amazing! Thank you Amoeba Sisters!
+hardrock22100 Thank you, we had so much fun with that video. :)
Your channel is so amazing and fun! Thank you so much Amoeba Sisters!
Excellent explanation!!!👌
Easy to understand!!!!! I enjoy to watch ur videos!!😊
Amoeba Sisters:
Great video, but as an English Teacher, I have to point something out: "Wherefore" does not mean, "where."
"Wherefore" means, "why." Nevertheless, you all should keep up the good work
Royce Rogerz Thank you for the great point! :D
Watching this for an A&P assignment. Thank you for making learning enjoyable! :)
absolutely AMAZING video! Loved how y'all went through each step and went through every detail, and the examples were very helpful. The video was also very entertaining!
***** Thanks, Olivia! This is one of our favorites---we went a little longer than we'd like, but we tried to do a lot of examples. We appreciate the encouragement!
What is honorificabilitudinitatibus?? its the word that appeared at 0:12.
Soumil Sahu It's one of the longest words we could find that sounded pretty complicated. It's a Latin word that appears in some literature works. It's defined as "the state of being able to achieve high honor." Nothing to do with osmosis, but we thought it fit right in there with something challenging to master. :)
***** Thanks
If a solution's "concentration" is the amount of solute in a solvent, how can there be a concentration of water (solvent)?