The fluid mosaic model of the plasma membrane. Protein, lipid, and carbohydrate components of the membrane.
Log in Sartia Cronyn 9 years agoPosted 9 years ago. Direct link to Sartia Cronyn's post “what is between the phosp...” what is between the phospholipid bilayer? • (34 votes) marco.cazares50 8 years agoPosted 8 years ago. Direct link to marco.cazares50's post “Since the polor ends of t...” Since the polor ends of the phospholipids face the outer/ inner surface of the cell. They are in contact with the inter/outer cellular fluid predominantly water, glycoproteins,glycolipids, However the hydrophobic tails inter twin with each other forming the enter space between the polor heads. The space between the polor heads would contain saturated and unsaturated fatty acids which forms these tails. This gives them a slight negative polarity. With these fatty acid tail ( bent or straight) we would find a mosaic of integral proteins, cholesterol,. and yes, water molecules passing threw! (17 votes) akaur3 9 months agoPosted 9 months ago. Direct link to akaur3's post “how do i get this into my...” how do i get this into my head... • (13 votes) Forever Learner 9 months agoPosted 9 months ago. Direct link to Forever Learner's post “option 1). with a hammer ...” option 1). with a hammer on the anvil (33 votes) jrtf2001 8 years agoPosted 8 years ago. Direct link to jrtf2001's post “So with that example of t...” So with that example of the pinhead touching the fluid membrane (and the membrane flowing out of the way), I'm wondering how a person can bleed if all cell membranes do this. As in why don't sharp objects like pins and needles go straight through (I know it sounds silly) our skin without drawing blood? • (10 votes) Jeherul Islam 7 years agoPosted 7 years ago. Direct link to Jeherul Islam's post “Bleeding occurs when vein...” Bleeding occurs when veins are torn out. When you pass a pin through your skin ,the pinhead is literally much bigger than the individual cell for the pinhead to pass through the said cell membrane.So you can guess the pin must torn out some small veins on its way into your skin,not into an individual cell.Moreover there is no blood inside a cell or cell membrane for it to come out.Hope this clears your doubt (34 votes) Bella 8 years agoPosted 8 years ago. Direct link to Bella's post “What is meant by "Transme...” What is meant by "Transmembrane proteins may cross the membrane just once, or may have as many as twelve different membrane-spanning sections." I don't understand the twelve different membrane-spanning sections part. • (11 votes) Igor 8 years agoPosted 8 years ago. Direct link to Igor's post “I think it looks like thr...” I think it looks like three-pass transmembrane protein (in the first picture about proteins) only having 12 sections instead of 3. (7 votes) ewu2000tx 8 years agoPosted 8 years ago. Direct link to ewu2000tx's post “Why do we have proteins i...” Why do we have proteins in the cell membrane? • (7 votes) SpinosaurusRex 8 years agoPosted 8 years ago. Direct link to SpinosaurusRex's post “http://www.sparknotes.com...” (4 votes) Lech 6 years agoPosted 6 years ago. Direct link to Lech's post “What are lipid rafts, wha...” What are lipid rafts, what are they made of and whats their function? and where in the plasma membrane are they located? • (5 votes) tyersome 6 years agoPosted 6 years ago. Direct link to tyersome's post “Lipid rafts are regions w...” Lipid rafts are regions within the plasma membrane that are more rigid than the surrounding membrane. They are made of the same components as the rest of the membrane, but in differing amounts — for example they contain much more cholesterol. AFAIK their function is not completely clear, but they may help concentrate certain membrane proteins in a way that makes some cell processes more efficient. There is an extensive wikipedia article on this that you may find interesting: This article might also be worth reading: (9 votes) SuperSwetter a year agoPosted a year ago. Direct link to SuperSwetter's post “Would I need all of this ...” Would I need all of this information for regular High School Bio? • (5 votes) 'lys :) 5 months agoPosted 5 months ago. Direct link to 'lys :)'s post “Yes, you do do, because B...” Yes, you do do, because Bio teachers love to test you on literally everything. I have friends that go to different schools, and they can say the same. So to everyone who thinks all of this ain't necessary to learn, if you wanna pass biology, it is. Plus its in the science state tests(please tell me my state is not the only one that requires 9-12th graders to take a science state test as well....) (2 votes) terminata a year agoPosted a year ago. Direct link to terminata's post “so does having high chole...” so does having high cholesterol mean that your cell walls are too slippery? • (7 votes) xenon54xeelemental 10 days agoPosted 10 days ago. Direct link to xenon54xeelemental's post “That's a clever question!...” That's a clever question! However, cell membranes aren't exactly "slippery" due to cholesterol. Cholesterol is a type of lipid molecule that's embedded in cell membranes. they help to (1 vote) alishbasheikh71 9 years agoPosted 9 years ago. Direct link to alishbasheikh71's post “fluid mosaic model is cel...” fluid mosaic model is cell of ?? • (0 votes) Arwen Nugteren 8 years agoPosted 8 years ago. Direct link to Arwen Nugteren's post “That's not correct .... t...” That's not correct .... the fluid mosaic model is a model of the plasma membrane which is present in ALL cells, both eukaryotic and prokaryotic, single-celled and multi-cellular organisms. (26 votes) jeff li a year agoPosted a year ago. Direct link to jeff li's post “so confused on how lipids...” so confused on how lipids form • (5 votes) xenon54xeelemental 10 days agoPosted 10 days ago. Direct link to xenon54xeelemental's post “Lipids are formed through...” Lipids are formed through various biochemical processes involving the synthesis of fatty acids and glycerol. (1 vote)Want to join the conversation?
option 2). through diligent studying of the material and using lots of different resources
thank you!
https://en.wikipedia.org/wiki/Lipid_raft
http://www.jlr.org/content/44/4/655.full
Well, I hope that answered your question!
1.maintain cell structure by keeping cell membrane intact and stable
2.Regulate fluidity by balancing the fluidity of the membrane, making it less permeable to certain substances
High cholesterol levels in the blood, however, can lead to an excessive accumulation of cholesterol in arterial walls, contributing to atherosclerosis (plaque buildup) and increasing the risk of cardiovascular disease.
So, it's not exactly that cell walls become "too slippery" due to high cholesterol, but rather that excessive cholesterol in the bloodstream can lead to harmful deposits in arterial walls.
Fatty acid synthesis:
Starts with acetyl-CoA, a molecule produced from carbohydrates, amino acids, or fats.
Enzymes like acetyl-CoA carboxylase and fatty acid synthase catalyze the condensation of acetyl-CoA units, forming a growing fatty acid chain.
Glycerol synthesis:
Glycerol is produced from glucose through glycolysis or from fatty acid breakdown.
Triglyceride synthesis:
Fatty acids are esterified with glycerol, forming triglycerides (also known as triacylglycerols).
This reaction is catalyzed by enzymes like glycerol kinase and diacylglycerol acyltransferase.
Phospholipid synthesis:
Phospholipids, like phosphatidylcholine, are formed by attaching a phosphate group and a polar head group to a glycerol backbone.
Enzymes like phosphatidate cytidylyltransferase and choline phosphotransferase catalyze these reactions.
this is only an over view so you should get researching to understand it better
