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What if a cell membrane was made out a molecule that did not repel water?
the cells would be hard to function and so that cell would be daqmaged
What molecule crosses the plasma membrane by diffusion?
water
Why would a substance not be able to pass through a membrane by diffusion?
Water cannot diffuse a plasma membrane because of the fact that the phosphate heads of the phospholipids are hydrophilic, the hydrocarbon tails of the phospholipids are hydrophobic, meaning they repel water. The bilayer phospholipid model of the plasma membrane shows that the phophates face outward on either side of the membrane and the lipid tails are in the middle of the bilayer.
Which of these is hydrophobic like the interior of the plasma membrane?
Lipids, specifically phospholipids, are hydrophobic like the interior of the plasma membrane. The tails of phospholipids are non-polar and repel water, making them ideal for forming the hydrophobic interior of the membrane.
Which molecule prevents cell membrane from dissolving in water?
Nonpolar Fatty Acids
What would happen to a cell if the cell membrane was made if a molecule that did not repel water?
it would not keep working to do its functions
What if a cell membrane was made out a molecule that did not repel water?
the cells would be hard to function and so that cell would be daqmaged
The fatty acids in the tail of a phospholipid molecule are what?
This is called the hydrophobic 'side' of the phospholipid molecule
What is the attraction between a water molecule and olive oil molecule?
They don't attract, in fact they repel, which is why oil and water separate when left for a period of time.
Where is the water molecule broken down?
The Thylakoid Membrane
What molecule crosses the plasma membrane by diffusion?
water
How can water go through the cell membrane when it is polar?
Because it is a small molecule, water can diffuse through the cell membrane.
Why would a substance not be able to pass through a membrane by diffusion?
Water cannot diffuse a plasma membrane because of the fact that the phosphate heads of the phospholipids are hydrophilic, the hydrocarbon tails of the phospholipids are hydrophobic, meaning they repel water. The bilayer phospholipid model of the plasma membrane shows that the phophates face outward on either side of the membrane and the lipid tails are in the middle of the bilayer.
A Phospholipid molecule has a head and the two tails are found where?
The head of a phospholipid molecule is hydrophilic, meaning it is attracted to water, and is found on the outside of the lipid bilayer. The two tails are hydrophobic, meaning they repel water, and are located on the inside of the lipid bilayer.
What molecule uses osmosis?
Water is the primary molecule that undergoes osmosis. Osmosis is the movement of water molecules across a semipermeable membrane from an area of higher water concentration to an area of lower water concentration in order to equalize the concentrations on both sides of the membrane.
Which part of a phospolipid molecule is hydrophobic?
The lipid tails of a phospholipid molecule are hydrophobic, as they consist of nonpolar fatty acid chains that repel water.
Which of these is hydrophobic like the interior of the plasma membrane?
Lipids, specifically phospholipids, are hydrophobic like the interior of the plasma membrane. The tails of phospholipids are non-polar and repel water, making them ideal for forming the hydrophobic interior of the membrane.
