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Cell Membranes Rap

🔥 Ace your biology class! Start your free trial to the world’s best AP Biology curriculum at https://learn-biology.com ➡️ Studying for a test? Download Mr. W's Ultimate Biology checklist and crush it on you next biology test! https://apbiosuccess.com/checklist 🎵 Do you want to sing along? Download Mr. W's Sciencemusicvideos Songbook https://apbiosuccess.com/songbook SUMMARY: This karaoke-style music video provides a musical explanation of the structure of the cell membrane. This includes the structure of phospholipids, the key structural component of biological membranes, and how phospholipids interact with water to organize themselves into a phospholipid bilayer. The roles of membranes proteins, carbohydrates, and cholesterol is also discussed. ==================== 📝Read below to see how you can benefit by using learn-biology.com📝 ==================== ⭐️ TEACHERS: Start with a free-trial account that gives your students access to interactive tutorials and allows you to monitor student work: https://learn-biology.com/ap-bio-teac... ⭐️ PARENTS: A guaranteed 4 or 5 for your son or daughter on the AP Bio Exam: https://learn-biology.com/parents/ ⭐️ PROFESSORS: Help your students master the most complex topics in biology. Sign for a free trial at: https://learn-biology.com/college-bio... ==================== 📝Learn more about Biomania, the app that puts AP Bio success in your pocket.📝 ==================== 🔥 BIOMANIA: THE BEST AP BIO PREPARATION APP: https://learn-biology.com/app/ Lyrics: If you're in a cell's cytoplasm, heading outside, Your last stop's a barrier, 8 nanometers wide, The cell membrane: our subject for today It's as basic to life as DNA It's Selectively permeable, like a border patrol of a country it maintains control. Selecting what leaves or what gains entry It's a guard, bouncer, watchman, patrolman or sentry. But not just a guard, it sends signals in nerves White blood cells use their membranes to eat germs like hors d'oeuvres, Membranes have receptors, enzymes and junctions, So what kinds of structure can have all these functions? CHORUS C-E double L, "Mem" B-R-A-N-E Controlling transport selective permeability Phospholipids, Carbohydrates, Proteins and Cholesterol The Fluid Mosaic Bilayer in us all So let's take a look at what makes up the membrane, Phospholipids rule this domain, In fact membrane structure emerges directly from phospholipids' chemical properties. There's a head and a tail on every phospholipid, The tail's two long chain fatty acids Bound to a glycerol, it's made to order The tail's non-polar -hydrophobic- fears water The head's got a phosphate, it's charged negatively, makes the head hydrophilic--plays in water happily So tail avoids water while the head's attracted to it, When phospholipids form the membrane that's how they do it. Cause when phospholipids into water get submerged, A phospholipid bilayer structure will emerge The tails hang together in a water free zone, Hear their hydrophobic moan, "water leave me alone!" While the heads are sticking out touching all those H2Os Tails in, heads out, it's how every membrane goes Tails in, heads out, in a cellular sphere, It's the bilayered basis of membranes everywhere. CHORUS But a cell membrane's not just a phospholipid scene There's cholesterol, carbohydrates, lots of proteins. In fact, membrane proteins have a presence so great, that they often exceed the phospholipids by weight. And all of these components are in constant motion, Moving, mixing like a boiling potion, Flowing like dancers in a party in Pasaic That's why the membrane's thought of as a fluid mosaic. Let's start with proteins since they're key in this mix. Transmembrane proteins span the entire width. Typically they're ports--think of channels or conveyors, For things that don't go through the lipid bilayer. Any protein embedded in the hydrophobic middle Built right into the inside is considered integral While peripheral proteins either hang on the exterior, Or inside on the cytoplasmic interior. Cholesterol keeps membranes flowing with ease, In cold it keeps the lipids moving so they don't freeze, In heat it slows the lipids down limiting their traveling, Cholesterol: it keeps membranes from unraveling Membrane carbohydrates work as markers or signs So your immune system knows which flag your cells are flyin' The blood types AB, O, and B and A Are about the carbohydrates on red blood cell membranes. CHORUS