Inside the Cell Membrane

Explore the parts of the cell membrane with The Amoeba Sisters! Video discusses phospholipid bilayer, cholesterol, peripheral proteins, integral proteins, glycoproteins, and glycolipids - as well as why the surface area to volume ratio is so important in cells. Expand for table of contents.

Contents:
00:00 Intro
1:25 Membrane controls what goes in and out of cell
1:40 Importance of surface area to volume ratio
3:31 Cell Theory
4:00 Fluid Mosaic Model
4:28 Phospholipid and phospholipid bilayer
5:58 Cholesterol
6:23 Proteins (peripheral and integral)
7:43 Glycoproteins and glycolipids (carbohydrates bound to proteins and lipids)

Additional Vocabulary:
-Amphiphilic
-Hydrophilic
-Hydrophobic

The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching biology at the high school level. For more information about The Amoeba Sisters, visit:

Our Resources:

Connect with us!

TIPS FOR VIEWING EDU YOUTUBE VIDEOS:

MUSIC:

COMMUNITY:
We take pride in our AWESOME community, and we welcome feedback and discussion. However, please remember that this is an education channel. See YouTube's community guidelines and how YouTube handles comments that are reported by the community. We also reserve the right to remove comments.

TRANSLATIONS:
Hindi Subtitles Credit: Alisha Aggarwal

[AmoebaSisters]

2. Integral proteins frequently cross the whole membrane (transmembrane); these are the types we show. In fact, all transmembrane proteins are integral proteins. *However* there are some integral proteins that don't go through the membrane completely (and are not transmembrane).

[k.m]

28 years old in a college biology class and THIS is the only way i can learn....thank you honestly please dont stop!

[NunReallyMatterz]

I am a 25 year old MPH student and I have NEVER in all of my life enjoyed a science lesson as much as I did this one! I think I speak for all visual learners when I say... THANK YOU!

[brittanystokes]

I was literally reading about plasma membranes in my biology book and having a hard time when I got a notification that this video was just posted! Thank you! You guys are honestly going be the main thing that helps me pass my biology class :)

[shelbywilliams]

These videos get me through my Honors Biology course. Thanks so much, Amoeba Sisters!

[Wolf-rd]

I’m 18 and am majoring in biology. I love biology, but my textbook in my current bio class does not have visual images so I had a hard time visualising the plasma membrane. This is SOOOO HELPFUL THANK YOU!

[rachelalmonte]

i watched these videos in highschool...now im in college and these videos are still the ONLY way for me to learn. I love them. Thank you for this.

[trenee]

Returning to school after many many MANY years & taking A&P. This is so entertaining & easier to understand

[jennabrooks]

I am a sophomore in biology and I am last minute studying for a biology test I didn’t know a thing about. I now feel confident I can ace this test, thank you!

[camerontraer]

As a Grade 12 student, your videos are REALLY helping me to understand all of this for my biology class! Thank you so much!

[claudiasaboia]

Excellent resources for teachers, detailed explanations making easier for students to understand the concept through visualizations. Thank you amoeba sister, amazing job

[jenniferlloyd]

I've been watching your videos since my daughters were in middle school. Now, 6 years later, one is in nursing school and the other is in a doctorate in physical therapy program! Great videos!

[chrischinkan]

You are a lifesaver... I sit in class for an hour and fifteen minutes confused only for you to give the same material and in a logical way in 9 minutes... THANK

[lydiakanyerere]

Am more than grateful to you guys.. I can definitely see my self as a doctor after watching all your videos.❤❤❤

[clover]

I cried when I see amoeba sister doing a topic that I can't understand at all😭😭😭love u guysss❤️❤️

[sisterfaith]

My first time here and I already understand what made me sleep in class out of brain stress. God bless you, amoeba sisters

[ljdoubleyou]

I cannot thank you enough for this video. I am a 42 year old mom who's just started school again and English is not my primary language so I need to study extra and this video helped me so much to understand. Thank you so very much!!!

[groutcleaningservice]

Thank you for taking the time to create such an informative video. The last time I read anything about this topic was 1977. I wanted to understand cell membranes and good proteins and how they work and you nailed it in a simple concept I can enjoy and remember. Thank you.

[justathought]

Just so you know, your videos are helping MANY college students pass every Biology test, so THANK YOU!😁

[julifree]

In the middle of last minute cramming here and just wanted to say thanks! I could be watching hours of lecture videos, but these are much better! Thank you!