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The process is exergonic
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∙ 11y ago
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Cell Membranes are contructed mainly of?
Cell membranes are made of a phospholipid bilayer.
Are lipid bilayers self sealing?
yes
What are the two most important characteristics of the lipid bilayers found in cell membranes?
Lipid bilayers are important because of their impermeability by water solutions and their regulation of ion intake into the cell.
Why do you think there are 2 lipid bilayers?
they need to control the amount going in and out
A lipid bilayer is characteristic of all membranes?
A lipid bilayer is characteristic of all biological membranes. Some membranes are double bilayers.
Cell Membranes are contructed mainly of?
Cell membranes are made of a phospholipid bilayer.
What are cell membranes constructed of?
Lipid Bilayers
Are lipid bilayers self sealing?
yes
Cell membranes are constucted mainly of?
lipid bilayers
What are the two most important characteristics of the lipid bilayers found in cell membranes?
Lipid bilayers are important because of their impermeability by water solutions and their regulation of ion intake into the cell.
What stuctural features of the plasma membrane contribute to its semipermeability?
lipid bilayers
Why do you think there are 2 lipid bilayers?
they need to control the amount going in and out
A lipid bilayer is characteristic of all membranes?
A lipid bilayer is characteristic of all biological membranes. Some membranes are double bilayers.
What is another name for the phospholipid bilayer?
It depends on which lipid bilayer you're talking about. There is the phospholipid bilayer that surrounds eukaryotic cells, cholesterol phospholipid bilayers, protein lipid bilayers, phase transition lipid bilayer, lipid bilayer membrane...
Does phospholipids form cell membranes?
Yes, they are the most abundant and important constituents of the lipid bilayer of cell membranes. Phospholipids have a polar head group and two hydrophobic hydrocarbon tails. The tails are usually fatty acids, and they can differ in lenght (normally, their lenght ranges between 14 and 24 carbon atoms). One tail usually has one or more cis-double bonds (that is, it is unsaturated), while the other tail does not (that is, it is saturated). It is the shape and the amphipatic nature of the phospholipid molecules that cause them to form bilayers spontaneously in aqueous solution. One of the most important characteristics of lipid bilayers is its fluidity, which is crucial to many membrane functions.
Why is the skin permeable to organic solvents?
Because they can dissolve the lipid bilayers of epidermal and dermal cell plasma membranes.
What increases the strength of the hydrophobic interactions in lipid bilayers and thus makes them less permeable to polar molecules?
increasing the length of hydrocarbon tails
