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Cell membrane fluidity | Cells | MCAT | Khan Academy

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Learn how the phospholipids in the cell membrane maintain membrane fluidity. By William Tsai. Created by William Tsai. Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/cells/cell-membrane-overview/v/membrane-dynamics?utm_source=YT&utm_medium=Desc&utm_campaign=mcat Missed the previous lesson? https://www.khanacademy.org/test-prep/mcat/cells/cell-membrane-overview/v/cell-membrane-proteins?utm_source=YT&utm_medium=Desc&utm_campaign=mcat MCAT on Khan Academy: Go ahead and practice some passage-based questions! About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s MCAT channel: https://www.youtube.com/channel/UCDkK5wqSuwDlJ3_nl3rgdiQ?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
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Текстовые комментарии (30)
anythingsahaj (1 месяц назад)
thanks man !
Ayeman Rahim (2 месяца назад)
y does cholestrol bring phospholipid molecule close together in hot temp nd then distance phosopholipid in cold temp
David golf (3 месяца назад)
So a diet rich in saturated fats is a poor one, better still consume more unsaturated fats, oh those clever keto zealots, I pity their ignorance and arrogance.
eric yam (1 месяц назад)
saturated fatty acids are non essential fats fora reason, they serve no purpose in the body.
Parth Sharma (5 месяцев назад)
THANK YOU!!!! YOU SAVED MY MARK
cris evans (7 месяцев назад)
i should pay my propins to you, not my teacher who always tells me "go search"
Salman Jaiteh (8 месяцев назад)
You the best
Ian StDizier (1 год назад)
The only reason I'm passing college...
Simran NO NAME (1 год назад)
so then what is the main function of cholesterol molecules in the plasma membrane would it be that it helps maintain fluidity
Shrikesav Adithya (1 месяц назад)
I couldn't find a paper verifying the research. For example cholesterol uses in the wiki page has a citation need. So can you direct me to a paper that has proven it ?
Vaibhav pandey (7 месяцев назад)
Cholesterol has one more function. It enhances the permeability barrier properties of the lipid bilayer.
Omar HD (1 год назад)
thaaaaaaaaaaaaaaaaaaaaaaaank sooooooooooooo much
christina lee (1 год назад)
Yay! I finally understand how cholesterol affects fluidity! Thank you!
Bo Lin (1 год назад)
Hi, could you tell me what software or tablet you used for writing/drawing during your lecture? Thanks.
kara ss (1 год назад)
thank you very much!that was really helpful😊 actually i was wondering how can membrane proteins affect its fluidity? i really hope you answer me you have a great way to explain 😊thank you
Ashok Sainoji (1 год назад)
iss 09
Mohammad al-bitar (2 года назад)
thanks 😊😊
Neelam Sharma (7 месяцев назад)
Please give me relationship between fluidity and viscosity
LOLk (2 года назад)
Does chain length have an effect on the fluidity of the cell membrane?
jess123 b (7 месяцев назад)
THANKKK YOUUU !!!!
Tessa Foti (2 года назад)
Studying this in my Intro to Cell Bio class and the answer is yes--longer chains actually decrease fluidity because there are more interactions between the tails (I think of it as longer tails having more opportunities to be "tangled" and not as mobile!)
Radhika Pathak (2 года назад)
That was very helpful. Thank u
Claudia Vazquez (3 года назад)
thank you!! super helpful
Alex Dang (3 года назад)
You forgot to mention that fluidity of the membrane depends on the cis and trans of unsaturated fatty acid tail. If you have a trans unsaturated fatty acid tail, fluidity decreases because the space between phospholipids are tightly packed. On the other hand, if you have cis unsaturated fatty acid tail, the fluidity increases because the phospholipids are less packed.
Radhika Pathak (2 года назад)
yeah.. i was waiting for this concept throughout d video. thanks.
Kim Hernandez (3 года назад)
Thank you!
Sachin (3 года назад)
thanks!
Sanele Maseko (4 года назад)
Thank u so much. This was informative...
Go Hogs WPS (4 года назад)
excellent explaination. thanks.
Sophia A.Rahman (4 года назад)
thank youuu! :) that was really helpful

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