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What else can I help you with?
What is the membrane of all cells made of?
the membranes of all cells are made of lipids and protein they form a lipo-protien layer which has two ends - hydrophillic and hydrophobic ends. the hydrophillic ends will be facing towards outer and hydrophobic ends face inward. thus the cell membrane is made of two layers of lipo-protien membrane. the hydrophobic ends wants to be away from water molecule hence facing towards inner side, and hydrophillic ends are facing towards outer as they can ineract with water molecule
The cell membrane is made up of phospholipids which are molecules?
with a hydrophilic (water-attracting) head and hydrophobic (water-repelling) tail. This structure allows phospholipids to form a bilayer in cell membranes, with the hydrophobic tails pointing inward and the hydrophilic heads facing outward towards the watery environments inside and outside the cell.
31.Hydrophobic interactions of the tails of phospholipids can produce?
lipid bilayer ------ Actually, this is not necessarily true. What 'clusters' form is going to depend on not only the concentration of the lipids in solution, but what the composition of the solution is as well. Generally, lipids in a water-solution (or a salt solution, or buffer, or whatever it may be) will first form micelles, ie. lipid monolayers where the tails all face inwards, to prevent their hydrophobic tails from being exposed to the aqueous environment. Depending on the conditions of the solution, they may form liposomes (ie. micelles that have a double layer rather than a monolayer), or sheets of phospholipid bilayers. The ends of the latter option, however, are energetically unfavorable. If your lipids are in an oil solution, then you are going to see the formation of inverse-micelles, where the tails face out towards the lipophilic (hydrophobic) environment, and the hydrophilic head groups are going to face inwards. ------
How do phospholipids interact with water to form a lipid bilayer?
The bilayer is composed of two layers of lipids arranged so that their hydrocarbon tails face one another to form an oily core held together by the hydrophobic effect, while their charged heads face the aqueous solutions on either side of the membrane. The hydrophilic interfacial regions are saturated with water, while the lipophilic core region contains essentially no water. Because of the oily core of the bilayer, it is only permeable to small hydrophobic solutes (such as chloroform or ethanol), but has a very low permeability to polar inorganic compounds and ionic molecules.
Is glucose an amphipathic?
I don't think that glucose has both hydrophyllic and hydrophobic ends though it is soluble. Think phospholipid for an amphipathic molecule.
What is the membrane of all cells made of?
the membranes of all cells are made of lipids and protein they form a lipo-protien layer which has two ends - hydrophillic and hydrophobic ends. the hydrophillic ends will be facing towards outer and hydrophobic ends face inward. thus the cell membrane is made of two layers of lipo-protien membrane. the hydrophobic ends wants to be away from water molecule hence facing towards inner side, and hydrophillic ends are facing towards outer as they can ineract with water molecule
Are both ends of a fatty acid polar?
no, because on end is hydrophobic while the other is hydrophillic
What is a phosholipd bilayer?
A phospholipid bilayer is a two-layered arrangement of phosphate and lipid molecules that form a cell membrane, the hydrophobic lipid ends facing inward and the hydrophilic phosphate ends facing outward. Also called lipid bilayer.http://dictionary.infoplease.com/phospholipid-bilayer
The cell membrane is made up of phospholipids which are molecules?
with a hydrophilic (water-attracting) head and hydrophobic (water-repelling) tail. This structure allows phospholipids to form a bilayer in cell membranes, with the hydrophobic tails pointing inward and the hydrophilic heads facing outward towards the watery environments inside and outside the cell.
Are unsaturated tails of lips hydrophilic?
No, unsaturated tails of lipids are hydrophobic, meaning they repel water. The presence of double bonds in the unsaturated tails creates kinks that prevent the tails from packing tightly together and make them more fluid.
In the cell membrane what does the fatty acids of phospholipid molecules do?
The lipid part of the cell phospholipid bilayer is hydrophobic and is responsible for repelling water. The hydrophobic ends face inward towards each other while the hydrophilic ends face outwards, which are saturated with water.
Why can soap clean greasy dishes?
Soap molecules have hydrophilic (water-attracting) and hydrophobic (oil-attracting) ends. The hydrophobic ends attach to the grease, while the hydrophilic ends are attracted to the water. This allows the soap to surround and lift away the grease, making it easier to rinse off with water.
31.Hydrophobic interactions of the tails of phospholipids can produce?
lipid bilayer ------ Actually, this is not necessarily true. What 'clusters' form is going to depend on not only the concentration of the lipids in solution, but what the composition of the solution is as well. Generally, lipids in a water-solution (or a salt solution, or buffer, or whatever it may be) will first form micelles, ie. lipid monolayers where the tails all face inwards, to prevent their hydrophobic tails from being exposed to the aqueous environment. Depending on the conditions of the solution, they may form liposomes (ie. micelles that have a double layer rather than a monolayer), or sheets of phospholipid bilayers. The ends of the latter option, however, are energetically unfavorable. If your lipids are in an oil solution, then you are going to see the formation of inverse-micelles, where the tails face out towards the lipophilic (hydrophobic) environment, and the hydrophilic head groups are going to face inwards. ------
What is a Phsospholipid?
Phospholipids belong to a group of lipids called amphipathic lipids. The two ends of a phospholipid differ both physically and chemically. One end of each molecule is hydrophilic and is composed of glycerol, phosphate. The other end is the fatty acid portion of the molecule and is hydrophobic and not soluble in water. The amphipathic properties of phospholipids allow them to form lipid bilayers in aqueous solution and are the fundamental components of cell membranes.
What are components for each of the four nucleotides of DNA?
The structural ends of nucleotides contain the ribose sugar that interlaces with phosphate groups to form the ribo-phosphate backbone of Dna. The other, nucleic, ends are hydrophobic, face inward, and BASE PAIRING between A and T is achieved using two hydrogen bonds, while Base Pairing between C and G is achieved using three hydrogen bonds.
Are polar molecules hydrophillic?
No, non-polar molecules are hydrophobic because they cannot form hydrogen bonds. A good example of this would be a cell membrane. The fatty acids in the lipid bilayer are non-polar and hydrophobic, while the polar ends that face the outside and inside of the cell are hydrophilic.
What is the answer to this in a liquid mixture with water and corn syrup?
A barrier-type wall is formed in between the two. This is because one of the ends of the oil cell is hydrophobic, thus preventing it from mixing with the water.
