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The fatty acid tail region of the phospholipids prevent soluble molecules from entering the cell?
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∙ 11y ago
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∙ 11y ago
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What particle can penetrate cell membrane easily?
particles that are small and hydrophobic and semipermeable. hydrophobic ions those that are soluble in lipids-- can easily pass through the membrane. In addition, small molecules like O2can sneak between the phospholipids of the membrane. On the other hand, hydrophilic molecules (like water and glucose) and ions (such as sodium ions and hydrogen ions) cannot pass directly through the phospholipids of the plasma membrane.
Lipids found in the human body?
Lipids are molecules that are fat soluble. Steroids, phospholipids and triglycerides are lipids that are found in the human body.
How does the absorption of a water-soluble molecule differ from that of a fat-soluble molecule?
Fat-soluble molecules such as fatty acids utilize facilitated diffusion whereas water-soluble molecules utilize osmosis
Why are organic molecules that contain oxygen atoms more soluble in water?
Water is a polar molecule, polar molecules are more soluble in other polar molecules. Oxygen helps make organic molecules more polar, and therefore more soluble in water.
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.
Why can only molecules that are fat soluable permate a cell membrane?
The cell wall itself is made of lipid. To be more precise, the cell membrane is made of a bilayer of phospholipids. The hydrophobic fatty acid tails prevent water-soluble molecules passing through, but allow the transport of lipid-soluble molecules.
The interior of the lipid bilayer of a cell membrane forms a nonpolar zone that?
A nonpolar zone is formed in the interior portion of a cell membrane. This zone has the ability to prevent large molecules and ions from entering through the membrane.
Where are the water in-soluble hydrophobic tails of the phospholipids bilayer located?
Cytoplasm of the cell
Are lipids water-soluble?
Phospholipids consist of a backbone of glycerol or sphingosine connected to fatty acids, a phosphate group, and other molecules that vary with the type of phospholipid. They are amphipathic, meaning that each of their molecules has a hydrophilic (water-loving) head and a long, hydrophobic (water-insoluble) tail. Thus, phospholipids can dissolve in both water and oil. Read more [related links]
Do lipid soluble molecules diffuse into a cell more rapidly than water soluble molecules?
Yes.
What particle can penetrate cell membrane easily?
particles that are small and hydrophobic and semipermeable. hydrophobic ions those that are soluble in lipids-- can easily pass through the membrane. In addition, small molecules like O2can sneak between the phospholipids of the membrane. On the other hand, hydrophilic molecules (like water and glucose) and ions (such as sodium ions and hydrogen ions) cannot pass directly through the phospholipids of the plasma membrane.
Lipids found in the human body?
Lipids are molecules that are fat soluble. Steroids, phospholipids and triglycerides are lipids that are found in the human body.
What molecules will mix with water?
Water soluble molecules.
Lipid-soluble materials enter and exit the cell via?
Phospholipids permit lipid-soluble materials to easily enter or leave the cell by diffusion through the cell membrane. Phospholipids form a bilayer or double layer which makes up most of the membrane.
How does the absorption of a water-soluble molecule differ from that of a fat-soluble molecule?
Fat-soluble molecules such as fatty acids utilize facilitated diffusion whereas water-soluble molecules utilize osmosis
Why are organic molecules that contain oxygen atoms more soluble in water?
Water is a polar molecule, polar molecules are more soluble in other polar molecules. Oxygen helps make organic molecules more polar, and therefore more soluble in water.
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.
