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Do hydrophilic heads on plasma membranes attract or reple water?
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∙ 12y ago
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∙ 12y ago
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What is a lipid with a water attracting and water repelling part of its molecule?
Any phospholipid has a hydrophilic head and hydrophobic tail. These are the lipids that are most common in cell membranes, which require this amphipathic property to function. Other lipids, including many sphingolipids, are also amphipathic.
Do glycolipids have hydrophilic heads?
Glycolipids contain hydrophilic heads. These hydrophilic heads interact with each other and form a hydrophilic coating on each side of the bilayer point towards the polar solvent.
What are the molecules in the plasma membrane made of?
phospholipids are the molecules that make up the plasma membrane and they are made of polar (hydrophilic) heads and 2 non-polar (hydrophobic) tails
The lipids within the fluid mosaic of the plasma membranes are held in place by?
the phospholipids in the membrane are not actually held together by anything. They stay together because the heads are hydrophilic (water loving) and the tails are hydrophobic (they do not like water) so they line up in a bilayer with the tails on the inside and the heads on the outside and stay like this because of what each end of the phospholipid is attracted to
What are the lipids within the fluid mosaic of the plasma membranes held in place by?
They are held together by hydrophobic interactions in which the hydrophilic 'heads' (phosphate group) of the phospholipid face outwards towards the aqueous environment while the hydrophobic 'tails' (long hydrocarbon chains of fatty acids) face inwards, away from the aqueous environment.
What is a lipid with a water attracting and water repelling part of its molecule?
Any phospholipid has a hydrophilic head and hydrophobic tail. These are the lipids that are most common in cell membranes, which require this amphipathic property to function. Other lipids, including many sphingolipids, are also amphipathic.
Why is a phospholipid both hydrophilic and hydrophobic?
They have both hydrophilic and hydrophobic heads. In a lipid bilayer, the hydrophilic head of the phospholipid faces the outside of the membrane while the hydrophobic head faces the the hydrophobic head of another phospholipid.
Do glycolipids have hydrophilic heads?
Glycolipids contain hydrophilic heads. These hydrophilic heads interact with each other and form a hydrophilic coating on each side of the bilayer point towards the polar solvent.
What are the molecules in the plasma membrane made of?
phospholipids are the molecules that make up the plasma membrane and they are made of polar (hydrophilic) heads and 2 non-polar (hydrophobic) tails
What is the structure of a plasma membrane and what is the role of their hydrophilic heads?
That is the structure of plasma membrane adjectent or near the secondary cell wall in a cells. It's a living outermost boundary of all the cells.
What is meant by the phrase membranes are bifacial?
membrane are composed of a lipid bilayer. their hydrophobic tails face the inside of the membrane and their hydrophilic heads face their environment.
Is the plasma memebrane a single-layered membrane?
No. Plasma membranes are a phospholipid bilayer with one end that likes water and one that is repelled by water. The phosphate portions are "heads" and line up on the outsides with the "heads" on the outsides.
How do the hydrophobic and hydrophilic properties of phospholipids help in maintaining the structure of the cell membrane?
Hydrophilic molecules are attracted to water. Hydrophobic molecules are not attracted to water, but they are attracted to each other. Phospholipid molecules are unusual because they are partly hydrophilic and partly hydrophobic. The phosphate head is hydrophilic and the two hydrocarbon tails are hydrophobic. In water, phospholipids form double layer with the hydrophilic heads in contact with water on both sides and the hydrophilic tails away from water in the centre. This arrangement is found in biological membranes. The attraction between the hydrophobic tails in the centre and between the hydrophilic heads and the surrounding water makes membranes veery stable.
Three major parts of the cell membrane?
The parts of the plasma membrane (I am assuming that you are referring to the plasma membrane) are hydrophilic (water-loving) heads, hydrophobic (water-hating) tails, cholesterol, carb chains, and integral proteins. The plasma membrane is known to be fluid-mosaic, meaning that its motion is wave-like. The hydrophilic head is located on the very outside of the plasma membrane and the inside of the cell. The hydrophobic tails are located in between the two hydrophilic heads. The cholestrol is located inside the plasma membrane to not allow the tails to be tangled. Carb chains are located outside of the plasma membrane (along with hydrophilic heads) and is there for chemical ID of the cell. Integral proteins are also located outside the plasma membrane; its function to shape materials needed inside the cell to a certain shape (diffusion). hydrophilic head-> OO <- hydrophilic head hydrophobic tails---------^
The lipids within the fluid mosaic of the plasma membranes are held in place by?
the phospholipids in the membrane are not actually held together by anything. They stay together because the heads are hydrophilic (water loving) and the tails are hydrophobic (they do not like water) so they line up in a bilayer with the tails on the inside and the heads on the outside and stay like this because of what each end of the phospholipid is attracted to
Is cytoplasm hydrophilic?
The plasma membrane is made up of phospholipids, which each have a hydrophilic tail and a hydrophobic head. They will create two layers with the heads facing each other and the tails facing out. So the inside of the plasma membrane is hydrophobic while the outsides are hydrophilic.
What are the lipids within the fluid mosaic of the plasma membranes held in place by?
They are held together by hydrophobic interactions in which the hydrophilic 'heads' (phosphate group) of the phospholipid face outwards towards the aqueous environment while the hydrophobic 'tails' (long hydrocarbon chains of fatty acids) face inwards, away from the aqueous environment.
