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How do unsaturated phospholipid fatty acid tails affect plasma membrane fluidity?
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How does the presence of cis double bonds in fatty acids affect membrane fluidity?
They tend to increase the fluidity
Which cell structure does phospholipid affect the function of?
The cell membrane and the membranes of all of their organelles are made of phospholipids.
How does calcium affect membrane fluidity?
As heat increases, the membranes will become more fluid and as the temperature decreases it will solidify more. i.e. butter, in the fridge its solid but if you take it out then it will eventually melt.
How does lipid solubility affect the ability of substances entering a cell?
If the substance is not lipid soluble, it will not be able to pass through the cell membrane, which is a phospholipid bilayer. This means it will not be able to enter the cell.
How do unsaturated fatty acids in the glycerophospholipids affect the structure of the Cell Membrane?
Because of the kinks in the carbon chains at the cis double bonds of unsaturated fatty acids, the glycerophospholipids do not fit closely together. As a result, the lipid bilayer is not a rigid, fixed structure, but one that is dynamic and fluid like.
How does the presence of cis double bonds in fatty acids affect membrane fluidity?
They tend to increase the fluidity
What factors affect membrane fluidity?
cholesterol levels, degree of saturation of fatty acids, temperature
Which cell structure does phospholipid affect the function of?
The cell membrane and the membranes of all of their organelles are made of phospholipids.
How does calcium affect membrane fluidity?
As heat increases, the membranes will become more fluid and as the temperature decreases it will solidify more. i.e. butter, in the fridge its solid but if you take it out then it will eventually melt.
Can fluidity influence by certain drug?
Yes, the fluidity of a certain drug can affect the effectiveness of that particular drug.
How does lipid solubility affect the ability of substances entering a cell?
If the substance is not lipid soluble, it will not be able to pass through the cell membrane, which is a phospholipid bilayer. This means it will not be able to enter the cell.
How do unsaturated fatty acids in the glycerophospholipids affect the structure of the Cell Membrane?
Because of the kinks in the carbon chains at the cis double bonds of unsaturated fatty acids, the glycerophospholipids do not fit closely together. As a result, the lipid bilayer is not a rigid, fixed structure, but one that is dynamic and fluid like.
How does the chemical nature of a phospholipid affect its solubility?
by adding the rate
Why is the membrane described as a phospholipids bilayer?
The phospholipid bilayer is fluid due to the unsaturated hydrocarbon tails of phospholipids found in the hydrophobic region. These unsaturated hydrocarbon tails do not have all the hydrogen it can possibly have, so carbon forms a double bond. This double bond within the tails causes a kink in the tail, which prevents tight packing within the hydrophobic region. Preventing the tight packing makes the bilayer more fluid, which all membranes need to be fluid for it to be able to work. Being solid will alter the permeability and affect the enzymes.
Which of the following factors does not affect membrane permeability?
The polarity of membrane phospholipids -Mastering Biology
Why would fat substances rapidly affect a cell?
The cell membrane is also called a phospholipid bi-layer. In other words, it is like an Oreo cookie, with a layer of lipids on both sides, made of fat, with a layer of phosphorus in the middle. So every cell in your body needs fats in order to form and function properly.
Does low temperature affect the function of a cell?
Yes, low temperature can affect the function of a cell. At low temperatures, the movement and activity of molecules within a cell slow down, which can impact various cellular processes such as enzyme activity, membrane fluidity, and protein folding. This can ultimately lead to decreased cell metabolism, impaired cell function, and even cell death in extreme cases.
