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The relative impermeability of membranes to water-soluble molecules is a result of?
The presence of phospholipids in the lipid bilayer accounts for the relative impermeability of membranes to water-soluble molecules. Phospholipids are types of lipids that are made up of components that include two fatty acids, a polar molecules, glycerol, and phosphate groups.
What else can I help you with?
What property of the product molecules seems to be the most important in determinining relative retention time?
The most important property in determining relative retention time is the molecular size and shape of the product molecules. Larger or more complex molecules tend to elute later in gas chromatography compared to smaller or simpler molecules with similar chemical properties.
Do all cell membranes contain the same kind of proteins in the same relative locations?
No. Though all cell membranes have the same general characteristics outlined in any Biology textbook, they are all unique in type of proteins. Cell membranes between members of the same species will differ, and membranes within the same individual with differ also. The location of proteins will differ too, since they are subject to drifting and relocation. Some integral proteins will move slowly or not at all due to their connection to the cytoplasm, but others take advantage of the fluidity of the phospholipid bilayer.
Where is the higher solvent concentration?
The higher solvent concentration is where there are more solvent molecules relative to the solute molecules. This results in a more dilute solution with a lower solute concentration.
What is the relative atomic mass for sulfur?
256.52 g mol-1since sulfur molecules are S8.
How does temperature correlate to the permeability of the cell membrane?
Cell membranes act very much like a fluid on a molecular level. The phospholipids move around each other with relative ease, making the membrane flexible. With an increase in temperature, the molecular movement will increase throughout the membrane thus leading to looser fits among molecules and a more permeable membrane.
What property of the product molecules seems to be the most important in determinining relative retention time?
The most important property in determining relative retention time is the molecular size and shape of the product molecules. Larger or more complex molecules tend to elute later in gas chromatography compared to smaller or simpler molecules with similar chemical properties.
A group of molecules squeezed together is called a?
A group of molecules squeezed together is called a solid. In a solid, the molecules are closely packed and have fixed positions relative to each other.
What is relative humitidty?
The concentration of water molecules in the air expressed as a fraction of the concentration at which a fog forms.
Do all cell membranes contain the same kind of proteins in the same relative locations?
No. Though all cell membranes have the same general characteristics outlined in any Biology textbook, they are all unique in type of proteins. Cell membranes between members of the same species will differ, and membranes within the same individual with differ also. The location of proteins will differ too, since they are subject to drifting and relocation. Some integral proteins will move slowly or not at all due to their connection to the cytoplasm, but others take advantage of the fluidity of the phospholipid bilayer.
What is the role of cholesterol in membranes?
Cholesterol helps the membrane keep its shape and relative size. Cholesterol also helps with cell signaling which is how cells communicate with each other.
Where is the higher solvent concentration?
The higher solvent concentration is where there are more solvent molecules relative to the solute molecules. This results in a more dilute solution with a lower solute concentration.
What is the relative atomic mass for sulfur?
256.52 g mol-1since sulfur molecules are S8.
Usually expressed as a fraction this is way of showing the relative size of two membranes as when 2430 is written as 45?
If you mean 24/30 and 4/5 then they are both equivalent fractions
Is the concentration of water molecules higher in pure water or in sugar water?
The concentration of water molecules is higher in pure water compared to sugar water. Sugar water has sugar molecules dissolved in it, which decreases the concentration of water molecules relative to pure water.
How does temperature correlate to the permeability of the cell membrane?
Cell membranes act very much like a fluid on a molecular level. The phospholipids move around each other with relative ease, making the membrane flexible. With an increase in temperature, the molecular movement will increase throughout the membrane thus leading to looser fits among molecules and a more permeable membrane.
Molecules can vibrate but do not?
Molecules can vibrate due to their atoms moving relative to each other along bonds, but they do not rotate as a whole. Rotation implies a change in orientation around a fixed axis, which molecules typically do not undergo on a macroscopic scale.
How will the cell maintain homeostasis if it is hypertonic?
Part of the cell that functions to maintain homeostasis relative to the cell's passage of large molecules and particles to an area outside the cell.
