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Why are cells so small? Surface-area-to-volume ratio (IB Biology) 

Alex Lee
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Why are cells so small? Surface-area-to-volume ratio (IB Biology)

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5 авг 2024

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Комментарии : 43   
@weirdguy4948
@weirdguy4948 5 лет назад
I love the part where he just rants about cold hands for a while
@johnfkennedy1019
@johnfkennedy1019 8 лет назад
your not pathetic..:O you are our savior
@rachrach5
@rachrach5 6 лет назад
I just kept thinking, "Jimmy can't leave, he has no legs"
@stephaniemiller5165
@stephaniemiller5165 3 года назад
GREAT TEACHERS MAKE LEARNING FUN YOU ROCK!
@kazhian
@kazhian 4 года назад
You took a very good example (class room vs play ground). That made me to understand why cells are small
@lleo1234
@lleo1234 8 лет назад
You have made this concept so much easier to understand. Thank you so much!
@bemele1231
@bemele1231 9 лет назад
thank you for posting these i laugh and learn everytime!
@BadSho7
@BadSho7 10 лет назад
thanks! you are a great teacher
@misterleescience
@misterleescience 10 лет назад
Thank you. Still working on it...
@estherogar3690
@estherogar3690 8 лет назад
great video but please I will like to email you please .
@groggymonster9201
@groggymonster9201 3 года назад
15:04 made me laugh HAHAHA especially the end where you were like "hah? oriyte" i love this video so much XD
@andreaconrado2375
@andreaconrado2375 5 лет назад
you have saved me from failing my summative,
@Isaac.Correa
@Isaac.Correa 8 лет назад
Ohhhh so cold It's just so cold
@nadiabakkou702
@nadiabakkou702 8 лет назад
+isaac correa (“foodsmasher”) hello can you tel me your name please ? :)
@nadiabakkou702
@nadiabakkou702 8 лет назад
+isaac correa (“foodsmasher”) hello can you tel me your name please ? :)
@Smilew3257
@Smilew3257 10 лет назад
thanks sooooo much you've made this so much easier for me to understand!
@misterleescience
@misterleescience 10 лет назад
Thanks very much!
@ridhaali3067
@ridhaali3067 8 лет назад
you are a great teacher ! These videos help a lot!
@sourtalks
@sourtalks 9 лет назад
VERY great videos! have my mocks in january, and this is the best way to understand and revise and study! very well explained.
@user-tt1eg2sr6f
@user-tt1eg2sr6f 6 месяцев назад
Awesome 👏
@cassiel6217
@cassiel6217 8 лет назад
luv the skinny girl analogy lol
@jantone7
@jantone7 7 лет назад
Your awesome thank u! Great teacher!
@rubyw.4596
@rubyw.4596 8 лет назад
I wish you were my teacher! I love your videos.^^
@christophercook1452
@christophercook1452 8 лет назад
On your game, great teaching! Thanks for the video. If its twooo...
@leilasokio6886
@leilasokio6886 8 лет назад
helped me a lot in my test thank u!!!!!!!!!!!!!!!!!
@jorgegil1781
@jorgegil1781 8 лет назад
Thanks!
@suhasini153
@suhasini153 8 лет назад
thank you
@pascalyaminepn
@pascalyaminepn 9 лет назад
wish you were my teacher
@adrianamejia9184
@adrianamejia9184 8 лет назад
thank you!
@nadiabakkou702
@nadiabakkou702 8 лет назад
+Adriana Mejia Hello can you give me your facebook please ? :)
@larsbroothaerts6784
@larsbroothaerts6784 8 лет назад
explain the efficeint different between a big eggcell and a smallest cell ...
@Moonlight-gf4sl
@Moonlight-gf4sl 4 года назад
Hey thanks
@vivianlee3067
@vivianlee3067 7 лет назад
using IB vids for uni
@darrenho0109
@darrenho0109 9 лет назад
My teacher used this to teach us cells at home
@stephaniemiller5165
@stephaniemiller5165 3 года назад
I'm done....its...its...its....so cold..I'm done way to funny...very funny guy.
@Genevathistime
@Genevathistime 8 лет назад
You're doing really well! Thanks so much :) Also...I'm a female sumo lol
@jamesrose2312
@jamesrose2312 6 лет назад
Just a heads up: Earlier in the video I think the math is wrong in your chart... In the table you created, surface area increases more rapidly than volume, which is not the concept that you explain in your later section. You state clearly that as a cell increases in size, it's volume increases much faster than it's surface area, creating a lack of efficiency for a cell. By the math, something cubed would increase exponentially in comparison with something squared. Just thought I would throw it out there in case anyone hadn't done the math themselves on the chart. surface area= base x height volume= length x height x width
@jasonkhat801
@jasonkhat801 6 лет назад
He did it completely correct, the volume was growing cubically instead of quadratically, as the surface area was. He wanted to show the definite trend that it was experiencing as the size of the cubes increased. To do this, he used smaller numbers, since they had the greatest surface area to volume ratios. When you get into larger cell sizes, the values for the volume exceed those of the surface area, making the data harder to show a trend TL;DR He was right, he set it up to show a trend, no words were used incorrectly
@julissavesely1710
@julissavesely1710 9 лет назад
OOOOHHH!! I get it now.
@iunknownprodigy6604
@iunknownprodigy6604 7 лет назад
Mr. Vogel
@tianzexia2118
@tianzexia2118 3 года назад
3:40
@zoe-cc3bg
@zoe-cc3bg 4 года назад
I feel less stupid
@Jrush2000
@Jrush2000 2 года назад
Awful drawing skills go!
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