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What factors affect the permeability of lipid bi layers and why?
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What is A lipid found in animal cell membranes that reduces permeability and stiffens up the membrane?
cholesterol
What is characteristic of nuclear envelope?
The nuclear membrane is a lipid bilayer. It has two layers of lipid molecules surrounding it.
What feature of a cell prevent from entering the cell?
Nonpolar lipid layers
Why are biological membranes are composed largely of lipids?
The lipid bilayer of a cell allows for selective permeability. This means that only the substances that are allowed to get in and out can pass through the lipid layer.
Oral hypoglycemic drug affect lipid metabolism?
Metformin
What is lipid bilayer?
thin membrane made of two layers of lipid molecules.
What are the six factors that influence the permeability of a cell membrane?
There are three factors that determine the permeability of a cell's membrane: 1. Total number of channels available 2. Conductance - how well an ion passes through the channel 3. How long the channels are open
What is A lipid found in animal cell membranes that reduces permeability and stiffens up the membrane?
cholesterol
What is characteristic of nuclear envelope?
The nuclear membrane is a lipid bilayer. It has two layers of lipid molecules surrounding it.
What 4 factors affect the rate of absorption?
One factor that affects the rate of absorption is the molecule size. Particle size, lipid water solubility, and the degree of ionization are also three other factors that affect the rate of absorption.
What feature of a cell prevent from entering the cell?
Nonpolar lipid layers
What is the definition of 'Lipid Bilayer'?
A lipid bi-layer is a thin membrane of an animal or plant cell that comprises of two layers of lipid molecules. It is also known as the phospholipid bilayer.
What feature of a cell prevent water from entering a cell?
Nonpolar lipid layers
Ionophores are small hydrophobic molecules that can partition into the lipid bilayer and increase their permeability to specific inorganic ions what is a channel forming ionophore?
gramicidin A
What feature of a cell prevent water from entering the cell?
Nonpolar lipid layers
What are three parts of a phospholipid molecule?
two layers of phospholipids called the lipid bilayer
Why are biological membranes are composed largely of lipids?
The lipid bilayer of a cell allows for selective permeability. This means that only the substances that are allowed to get in and out can pass through the lipid layer.
