Chapter 7 - Cell Membrane & Transport (Active & Passive Transport, Osmosis, Diffusion, Bulk)

[@LetsGoBio]

🎓 Slides for this lecture can be found here! 🤓sowl.co/s/bwfj22 🗺Cell Transport Schematic found here! 🦠🚚 sowl.co/s/JsgTE 📚ALL Products live HERE 🦉store.sendowl.com/s/31943e5f-0d5b-4abc-8147-18dce02439c4

[@merrymelodies5028]

I almost dropped my class but then i came across your videos. Thank you for the clear explanation, now i don’t even use my professor’s narrated lectures, i use yours.

[@timhammons8067]

⏰ Timestamps: 1:34 Intro to the Cell Membrane 2:22: Phospholipids 4:24 Fluid Mosaic Model and factors of membrane fluidity 9:03 Membrane proteins and function 11:36 Functions of surface proteins 15:44 Selective permeability 19:01 Transport Proteins 20:58 Types of Transport (Active vs. Passive) 21:50 Diffusion & concentration gradients 25:08 Passive Transport (Simple Diffusion, Osmosis, Facilitated Diffusion) 27:16 Osmosis 29:31 Tonicity (hypotonic, hypertonic, isotonic) 35:19 Facilitated Diffusion 36:52 Channel Proteins 39:12 Active Transport (Electrogenic Pumps, Cotransport, and Bulk transport) 51:15 Exocytosis 51:57 Endocytosis (phagocytosis, pinocytosis, receptor-mediated endocytosis)

[@zoejane1635]

im taking a dual enrollment class in sophomore year and ur videos literally pass me thank u so much

[@LetsGoBio]

So glad they helped - I used to teach Dual enrollment students and I know it can be difficult. Best of luck!

[@shlokpatel9890]

Thank you so much for making these videos because I am a freshmen in high school taking Ap biology and as most of us know it is very challenging and I myself have to put a lot of hard work to do well in the class. So by watching this video it really helped me understand the concept of this chapter extremely well. Thank you for spending your own time making videos like these I will make sure before a test on the next chapter to watch another one of your videos.

[@marianaalanis4953]

I am taking cell biology in college and this video has help me prepare for my exam. Thank you! If any there any channels or videos they recommend for cell biology class I would appreciate it if you share with me

[@rabiamunir9294]

Thank you so much for this lovely lecture - everything was super clear to understand and helped me understand topics that I've struggled with in the past. Thank you again so much, have a great rest of your day 💚

[@chinmoyee.....2944]

Thank you very much for this nice video lectures 😇😇😇

[@tianasia4899]

thank you so much!! This is much easy to understand!

[@ufuksen5269]

Thanks for the video! I think there is a problem with timestamps but doesn't matter at all (:

[@ayoobalyamani5756]

Thank you very much Smooth explanation

[@abdelrhmansheha9333]

can you give a link for the presentation to review from it?

[@NA-kx6gb]

Hello! Love your videos. Just wanted you to know that the timestamps of this video in the description might be for another video.

[@keepnupwit_jese1393]

25:47

[@prettyfaerie7]

hidden gem!!

[@ahmaddarking5386]

Thank you very much proff. Can i get the slides so i can revision it fast before exam?

[@ellabelot98]

😅😅so helpful tysm

[@emilymedaglia6239]

Hello, love these videos and lectures but really confused. Is this chapter 7 for Cambell's? Chapter is called Membrane Structure & Function but this video is labeled differently. Seems to have similar content but then the notes underneath are wrong. Please let me know, thanks

[@LetsGoBio]

Thank you, and yes this is the same info as the Campbell book. I made my own PPTs so I named it differently. But all the same material is there :)

[@wouldbfarmer2227]

Passive transport-I don’t understand how something can ‘move’ without energy being involved.

[@LetsGoBio]

Yes, this can be tricky. You’re right in that there is energy present. In passive transport, the molecules move naturally bc of concentration gradients (they move from high to low concentration like a rock will roll down a steep hill). This is a form of potential energy. Heat (thermal energy) in the environment would make this movement even faster. But there’s not ATP being used. In active transport, we are specially using the bond energy in ATP to create movement. Because of ATP, we can move molecules against their concentration gradient (like pushing a rock uphill). So for cells “using energy” means using ATP - the energy molecule. In addition, there are different forms of kinetic and potential energy present in the cell environment that can cause molecules to move. I hope that cleared it up!

[@wouldbfarmer2227]

@@LetsGoBio thanks for responding.