In Da Club - Membranes & Transport: Crash Course Biology #5

In Da Club - Membranes & Transport: Crash Course Biology #5

Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-Series-DVD-Set Like CrashCourse on Facebook: http://www.facebook.com/youtubecrashcourse Follow CrashCourse on Twitter: http://www.twitter.com/thecrashcourse "Concert" music used with permission from Chameleon Circuit. This video uses sounds from Freesound.org: a list of these sounds can be found in the Google document here, along with the citations for this video: http://dft.ba/-1ZRl Table of Contents time codes: 1) Passive Transport - 1:17 2) Diffusion - 1:25 3) Osmosis - 2:12 4) Channel Proteins- 4:37 5) Active Transport - 4:58 6) ATP - 5:37 7) Transport Proteins - 6:19 8) Biolography - 6:37 9) Vesicular Transport - 9:02 10) Exocytosis - 9:21 11) Endocytosis - 9:50 12) Phagocytosis - 9:57 13) Pinocytosis - 10:29 14) Receptor-Mediated Endocytosis - 10:48 TAGS: crashcourse, hank green, biology, chemistry, cell, cell membrane, selective permeability, selectively permeable, active transport, passive transport, solution, concentration, concentration gradient, atp, adenosine tri-phosphate, jens christian skou, vesicular transport, phagocytosis, endocytosis Support CrashCourse on Subbable: http://subbable.com/crashcourse

Plant Cells: Crash Course Biology #6

Plant Cells: Crash Course Biology #6

Hank describes why plants are so freaking amazing - discussing their evolution, and how their cells are both similar to & different from animal cells. Crash Course Biology now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-Series-DVD-Set Like CrashCourse on Facebook: http://www.facebook.com/YouTubeCrashCourse Follow CrashCourse on Twitter: http://www.twitter.com/thecrashcourse This video uses sounds from Freesound.org, a list of which can be found, along with the CITATIONS for this video, in the Google Document here: http://dft.ba/-22aJ Table of Contents annotations: 1. Re-watch the whole video 0:00 2. Introduction 0:00 3. Plant Evolution 0:56 4. Eukaryotic vs. Prokaryotic Cells 2:33 5. Cellulose and Lignin 3:58 6. Plastids and Chloroplasts 7:05 7. Central Vacuole 8:10 TAGS: crashcourse, biology, hank green, plants, plantae, chemistry, energy, learn, course, lycophyte, scale tree, carboniferous, angiosperm, eukaryotic, nucleus, prokaryotic, membrane, cytoplasm, organelle, cellulose, lignin, energy, photosynthesis, plastid, chloroplast, central vacuole, turgor pressure Support CrashCourse on Subbable: http://subbable.com/crashcourse

Cell Membrane Transport - Transport Across A Membrane - How Do Things Move Across A Cell Membrane

Cell Membrane Transport - Transport Across A Membrane - How Do Things Move Across A Cell Membrane

In this video we discuss the different ways how substances transport across a cell membrane, including facilitated diffusion, channel mediated diffusion, carrier mediated diffusion, simple diffusion, passive transport and active transport. Transcript/Notes (partial) Substances move into and out of a cell through several different processes called membrane transport. There are two main processes, passive transport processes and active transport processes. The main difference between the two is that passive processes do not require energy expenditure and active processes do require cells to expend energy. Lets start by looking at the passive processes, which include simple diffusion, facilitated diffusion and osmosis. Diffusion is the movement of a substance from where it has a high concentration to where it has a low concentration, or the tendency of a substance to spread out evenly over a given space. Simple diffusion occurs with solutes that are small and non polar. By being non polar they can move in between the phosphoipid molecules that form the plasma membrane because the interior region of the membrane is non polar. Some of the materials that move by simple diffusion include the gases O2, CO2, and small fatty acids. So, if there is a higher concentration of oxygen O2 molecules outside of a cell, they can move down the concentration gradient, across the membrane without assistance, and into the cell as long as the concentration gradient exists. The second type of diffusion is facilitated diffusion. This applies to solutes that are small and either charged or polar. Because these solutes are polar, the non polar phospholipid bilayer blocks them from passing through the membrane and into or out of the cell by simple diffusion. However, they can pass into and out of the cell with the assistance of plasma membrane proteins through a process called facilitated diffusion. There are two types of facilitated diffusion, channel mediated diffusion and carrier mediated diffusion. The difference between the two is the type of transport protein used to move the substance across the membrane. Channel mediated diffusion is when a ion, which is a charged particle where its total number of electrons does not equal its total number of protons giving it a positive or negative charge, moves across the membrane through a water filled protein channel. Each protein channel is typically specific for one type of ion, and there are two types of channels, a leak channel, which is continuously open, and a gated channel, which only opens due to a stimulus, and only stays open for a fraction of a second. Carrier mediated diffusion involves the movement of polar molecules such as simple sugars or simple carbohydrates and amino acids across the membrane. This is accomplished by a carrier protein, which actually changes shape in the process. For instance glucose binds to a carrier protein, which changes shape and moves the glucose molecule to the other side of the membrane. Now for osmosis. Osmosis is the passive movement of water through a selectively permeable membrane. This occurs when there is a difference in concentration of water on either side of the membrane. This can happen in one of two ways, water can slip between the phospholipid molecules that make up the plasma membrane, or through integral protein water channels that are called aquaporins. Now lets look at active processes. As stated earlier, active processes require the use of cellular energy for membrane transport. There are two types of active processes, active transport and vesicular transport. Active transport is the movement of a solute against its concentration gradient, or going from an area of low concentration to a place of higher concentration. Vesicular transport is the transport of large substances across the plasma membrane by a vesicle, which is a membrane bound sac filled with materials. Active transport has two types, primary active transport and secondary active transport. In primary active transport cellular protein pumps called ion pumps move ions across the membrane, against their concentration gradient. In secondary active transport a substance is moved against its concentration gradient by using energy provided by a the movement of a second substance down its concentration gradient. There are two types of secondary active transports, symport, where two substances are moved in the same direction and antiport, where two substances are moved in opposite directions. Vesicular transport involves the transport of larger substances, such as proteins or large carbohydrate polysaccharides, across the plasma membrane. In exocytosis, materials are secreted from the cell to the interstitiual fluid outside the cell. In endocytosis the plasma membrane kind of traps a substance by folding inward. In phagocytosis a large particle is engulfed by the newly formed vesicle and this vesicle fuses with a lysosome.

Guess My Income | Lineup | Cut

Guess My Income | Lineup | Cut

Fear Pong is now a game! Get it here: http://www.fearponggame.com SUBSCRIBE: http://bit.ly/CutSubscribe Watch More Lineup: https://www.youtube.com/playlist?list=PLJic7bfGlo3qJcIXUJteaUm_3-3tgQSXw About Lineup: A who’s who of awkward assumptions and judgments. Don't forget to subscribe and follow us! Official Site: https://www.cut.com/ Facebook: http://cut.com/facebook Twitter: https://twitter.com/Cut Instagram: http://cut.com/instagram Snapchat: @watchcut Cut Swag: http://cut.com/shop About Cut: Small questions have powerful effects when they go viral. Cut spreads stories for fun, for serious, and for real– bringing the internet together one awkward moment at a time. Produced, directed, and edited by https://cut.com Want to work with us? http://cut.com/hiring Want to be in a video? http://cut.com/casting Want to sponsor a video? http://cut.com/sponsorships For licensing inquiries: http://cut.com/licensing Guess My Income | Lineup | Cut https://youtu.be/KWSDwS4S6Ss #Cut #Lineup #Challenge Cut https://www.youtube.com/watchcut

28 BEAUTY TRICKS THAT WILL CHANGE YOUR LIFE

28 BEAUTY TRICKS THAT WILL CHANGE YOUR LIFE

BEAUTY HACKS There are way too many great hacks I wanna share with you today! Ever tried to walk on grass in high heels? I did and it was awful! Until I came up with a genius glue gun cap solution! You should definitely give it a try? It's summer already and if you're still not ready for it, it's high time to upgrade your painting skills! Grab your makeup bag, I'll show you what to do! You know that time when you've just painted your nails and then you can barely touch your cup or door handle and can't take your clothes off, 'cause you're afraid to spoil your amazing new manicure? But in the end you somehow still mess it up accidentally! Have you ever come across this nasty problem? Then I've got simply wonderful solution. All you have to do is pour some cold water and add ice cubes in it, then rest your fingers there for one minute only! Now your nails are completely safe! You'll also find out effective way to remove blackheads and make edible lip balm! There's so much great stuff, stay tuned and don't miss out on anything! ;) Also in this video I wanna share with you one of my favorite lazy exercises for a flat belly. It's called 'vacuum' exercise! Here's how you do it: lay down on your back, breath out, draw in your stomach for 20-30 seconds. Repeat this simple routine 5 times every day and you'll see noticeable results after first two weeks! ;) Greasy hair problem is pretty common as well. Here's how to deal with it. Recipe for BRUNETTES: corn starch + cocoa powder + essential oil Recipe for BLONDES: corn starch + baking soda + essential oil Apply this powder on the hair roots and simply brush your hair afterwards. TIMESTAMPS: 0:50 NO MORE messy manicure 1:55 Summer abs 6:05 One product makeup 8:08 No place to put lashes? ---------------------------------------------------------------------------------------- Our Social Media: Facebook: https://www.facebook.com/5min.crafts/ Instagram: https://www.instagram.com/5.min.crafts/ Twitter: https://twitter.com/5m_crafts Subscribe to 5-Minute MAGIC: http://bit.ly/2ldditZ Subscribe to 5-Minute Crafts GIRLY: https://goo.gl/fWbJqz Subscribe 5-Minute Crafts KIDS: https://goo.gl/PEuLVt The Bright Side of Youtube: https://goo.gl/rQTJZz ---------------------------------------------------------------------------------------- For more videos and articles visit: http://www.brightside.me/

Oprah Meets a Schizophrenic Child With Over 200 Imaginary Friends | The Oprah Winfrey Show | OWN

Oprah Meets a Schizophrenic Child With Over 200 Imaginary Friends | The Oprah Winfrey Show | OWN

Look back on Oprah’s 2009 visit with Jani, a 7-year-old schizophrenic who had more than 200 imaginary companions. For more on #oprahwinfreyshow, visit http://bit.ly/1ODj0x7 Find OWN on TV at http://www.oprah.com/FindOWN #OWNTV #oprahwinfreyshow #Oprahwinfrey SUBSCRIBE: http://bit.ly/1vqD1PN Download the Watch OWN App: http://bit.ly/2hr1nX2 Download the OWN Bold Moves App: http://bit.ly/2hglOIa About OWN: Oprah Winfrey Network is the first and only network named for, and inspired by, a single iconic leader. Oprah Winfrey's heart and creative instincts inform the brand -- and the magnetism of the channel. Winfrey provides leadership in programming and attracts superstar talent to join her in primetime, building a global community of like-minded viewers and leading that community to connect on social media and beyond. OWN is a singular destination on cable. Depth with edge. Heart. Star power. Connection. And endless possibilities. Discover OWN TV: Find OWN on your TV!: http://bit.ly/1wJ0ugI Our Fantastic Lineup: http://bit.ly/1qMi2jE Connect with OWN Online: Visit the OWN WEBSITE: http://bit.ly/1qMi2jE Like OWN on FACEBOOK: http://on.fb.me/1AXYujp Follow OWN on TWITTER: http://bit.ly/1sJin8Y Follow OWN on INSTAGRAM: http://bit.ly/LnqzMz Follow OWN on PINTEREST: http://bit.ly/2dvfPeN Oprah Meets a Schizophrenic Child With Over 200 Imaginary Friends | The Oprah Winfrey Show | OWN http://www.youtube.com/user/OWN

ATP & Respiration: Crash Course Biology #7

ATP & Respiration: Crash Course Biology #7

In which Hank does some push ups for science and describes the "economy" of cellular respiration and the various processes whereby our bodies create energy in the form of ATP. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-Series-DVD-Set Like CrashCourse on Facebook: http://www.facebook.com/YouTubeCrashCourse Follow CrashCourse on Twitter: http://www.twitter.com/TheCrashCourse Special thanks go to Stafford Fitness (www.staffordfitness.net) for allowing us to shoot the gym scenes in their facilities. This video uses sounds from Freesound.org, a list of which can be found, along with the CITATIONS for this episode, in the Google Document here: http://dft.ba/-25Ad Table of Contents: 1) Cellular Respiration 01:00 2) Adenosine Triphosphate 01:29 3) Glycolysis 4:13 A) Pyruvate Molecules 5:00 B) Anaerobic Respiration/Fermentation 5:33 C) Aerobic Respiration 6:45 4) Krebs Cycle 7:06 A) Acetyl COA 7:38 B) Oxaloacetic Acid 8:21 C) Biolography: Hans Krebs 8:37 D) NAD/FAD 9:48 5) Electron Transport Chain 10:55 6) Check the Math 12:33 TAGS: crashcourse, biology, science, chemistry, energy, atp, adenosine triphosphate, cellular respiration, glucose, adp, hydrolysis, glycolysis, krebs cycle, electron transport chain, fermentation, lactic acid, enzyme, hans krebs, citric acid, ATP synthase Support CrashCourse on Subbable: http://subbable.com/crashcourse

Structure Of The Cell Membrane - Active and Passive Transport

Structure Of The Cell Membrane - Active and Passive Transport

What is it that separates what's inside a cell from what's outside of a cell? Why, that's the cell membrane. What's it made out of? How does it work? How do molecules get in and out of the cell? These are super-important concepts! Let's take a look. Subscribe: http://bit.ly/ProfDaveSubscribe ProfessorDaveExplains@gmail.com http://patreon.com/ProfessorDaveExplains http://professordaveexplains.com http://facebook.com/ProfessorDaveExpl... http://twitter.com/DaveExplains General Chemistry Tutorials: http://bit.ly/ProfDaveGenChem Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem Biochemistry Tutorials: http://bit.ly/ProfDaveBiochem Classical Physics Tutorials: http://bit.ly/ProfDavePhysics1 Modern Physics Tutorials: http://bit.ly/ProfDavePhysics2 Mathematics Tutorials: http://bit.ly/ProfDaveMaths Biology Tutorials: http://bit.ly/ProfDaveBio American History Tutorials: http://bit.ly/ProfDaveAmericanHistory

Passive Diffusion, Facilitated Diffusion, Active Transport

Passive Diffusion, Facilitated Diffusion, Active Transport

Donate here: http://www.aklectures.com/donate.php Website video link: http://www.aklectures.com/lecture/cell-membrane-transport Facebook link: https://www.facebook.com/aklectures Website link: http://www.aklectures.com

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