Well done. Q - Won't Molecular Transport (Protein Pumps) against the concentration gradient be part of Active Transport? The opening and closing up proteins to direct the molecules requires energy. You mentioned this under Passive Transport. Reference Biology by Miller Levine pg 212.
Cell Membrane Video - Notes Homeostasis - Internal Stability Cell membrane has 4 functions: - To control what goes in and out Phospholipid Bilayer - Barrier 1 Phospholipid = 1 glycerol - 2 Fatty Acid Tails Glycerol are hydrophilic, they love water, they face the water on the outside Fatty Acid Tails are hydrophobic, they hate water and so they face each other Semipermeable - Some things can enter, some can't Small and uncharged molecules or atoms can enter the phospholipid bilayer with no problem eg. water, oxygen and carbon dioxide. If things are bigger or charged they cannot enter the phospholipid bilayer Passive Transport - No ATP energy needed, relies on diffusion Diffusion - The movement of substances from high concertation to an area of low concentration. (think about going downhill on a bike, no energy is needed to push the pedals.) 1. Simple diffusion - when the substance is small and uncharged, so it can move freely in and out of the barrier eg. carbon dioxide, oxygen 2. Osmosis - same as simple diffusion but only for water (h2o) 3. Facilitated diffusion - for molecules or substances that are too big to enter on their own (eg. glucose or amino acids) so they get help from carrier proteins. Carrier proteins allow the molecule to come in to the barrier, then it changes shape and spits it out the other side. And vise versa. 4. Ion channel - For ions that have a charge, and cannot get inside the barrier on their own. An ion channel allows the ion to go in and our of the barrier. Active Transport - Movement of substances from low concentration to high concertation that requires ATP energy. (think about going uphill on a bike, energy is required to push the pedals.) Exocytosis - If there is a substance too big to enter, it will be surrounded by a vesicle. The vesicle will come up to the barrier and merge with the cell membrane and spit out the substance. NEED ATP ENERGY Endocytosis - A large substance will enter and form a vesicle with pieces of the cell membrane. NEED ATP ENERGY Ion Pumps/Protein Pumps - For ions that need to be pumped from an area where there is too many to too little, or vise versa. ATP energy is used to pump the ions to these areas. Cholestorel molecules - Hold the membrane together to keep it stable and to keep the fluid inside.
I also found this video useful. I'm a 9th grader taking the AP Bio class n my highschool. My parents won't feed me unless I do well In school. thank you, good samaritan.
Well done.
Q - Won't Molecular Transport (Protein Pumps) against the concentration gradient be part of Active Transport? The opening and closing up proteins to direct the molecules requires energy. You mentioned this under Passive Transport. Reference Biology by Miller Levine pg 212.
Thank you so much! The visuals really helped me understand better.
... Wow.... This was lovely.... Kudos to you.
I am so excited to have found your page! :)
wish my prof. taught like this ! thank you so much !
love it! so well explained !
very nicely explained thank you
I loved it, great video!
Great job. Thanks.
Cell Membrane Video - Notes
Homeostasis - Internal Stability
Cell membrane has 4 functions:
- To control what goes in and out
Phospholipid Bilayer - Barrier
1 Phospholipid = 1 glycerol - 2 Fatty Acid Tails
Glycerol are hydrophilic, they love water, they face the water on the outside
Fatty Acid Tails are hydrophobic, they hate water and so they face each other
Semipermeable - Some things can enter, some can't
Small and uncharged molecules or atoms can enter the phospholipid bilayer with no problem eg. water, oxygen and carbon dioxide.
If things are bigger or charged they cannot enter the phospholipid bilayer
Passive Transport - No ATP energy needed, relies on diffusion
Diffusion - The movement of substances from high concertation to an area of low concentration.
(think about going downhill on a bike, no energy is needed to push the pedals.)
1. Simple diffusion - when the substance is small and uncharged, so it can move freely in and out of the barrier eg. carbon dioxide, oxygen
2. Osmosis - same as simple diffusion but only for water (h2o)
3. Facilitated diffusion - for molecules or substances that are too big to enter on their own (eg. glucose or amino acids) so they get help from carrier proteins. Carrier proteins allow the molecule to come in to the barrier, then it changes shape and spits it out the other side. And vise versa.
4. Ion channel - For ions that have a charge, and cannot get inside the barrier on their own. An ion channel allows the ion to go in and our of the barrier.
Active Transport - Movement of substances from low concentration to high concertation that requires ATP energy.
(think about going uphill on a bike, energy is required to push the pedals.)
Exocytosis - If there is a substance too big to enter, it will be surrounded by a vesicle. The vesicle will come up to the barrier and merge with the cell membrane and spit out the substance. NEED ATP ENERGY
Endocytosis - A large substance will enter and form a vesicle with pieces of the cell membrane. NEED ATP ENERGY
Ion Pumps/Protein Pumps - For ions that need to be pumped from an area where there is too many to too little, or vise versa. ATP energy is used to pump the ions to these areas.
Cholestorel molecules - Hold the membrane together to keep it stable and to keep the fluid inside.
This is awesome Ashley, and your notes will help many others. Thank you!
Gerard THANK YOU
Do you have template for the structure, that i could use?
Perfect.Very good.
Good Stuff
Very helpful
glad this helped you in some way Saniya!
BY FAR THE BEST EXPLANATION GIVEN BY SOMEONE!. Very well appreciated, couldn't have instructed this any better.
This video is as good as Boy Problems by Carly Rae Jepsen.
Shoutout to Eveland Christian College
thumbs up if RP brought you here.
This was so easy loves it!
✅
Thanks... this really clarified everything for me..... if I pass this section of the exam next week it will be thanks to your tutorial
Yo thanks my man, been working on making my own human in my moms basement. This video finally gave me the info to finish my monsters dick. SUBSCRIBED!
I also found this video useful. I'm a 9th grader taking the AP Bio class n my highschool. My parents won't feed me unless I do well In school. thank you, good samaritan.
Glad this video helped you brother. take care my friend.
Hola my name is Gabriela I love your help,can you tech me pharmacology .gracias.
I'm going to make a cell membrane like that for my classroom :)
just going to comment some rough notes all taken from the video
thank you so much ! you have helped me study for my quiz !
Best teacher ever!! Very well explained! Great job
very well done! Helped me study for a bio test :)
this was such a big help. thank you
Thank you for the great explanation.
it was a good video loved it
yah man
thank you - great video!
Thank you.