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How does alcohol effect the cell membrane of onions?
The cell membrane is made up of a phospolipid bilayer, and these phospholipids are soluble in ethanol. Therefore, the membrane will be broken down (?). This increases the permeability of the cell membrane.
Does an increase in cholesterol affect membrane permeability?
Yes, an increase in cholesterol can affect membrane permeability by making the cell membrane less fluid and more rigid, which can impact the movement of molecules in and out of the cell.
The effect of acid on the cell membrane?
Acid can disrupt the structure of the cell membrane by breaking down phospholipids and proteins, leading to increased permeability and potential cell damage. The disruption of the cell membrane can result in leakage of cellular contents and loss of cell function, ultimately causing cell death.
Is the effect of a neurotransmitter on the muscle cell membrane to modify its ion permeability properties temporarily?
Yes, neurotransmitters can modify the ion permeability of muscle cell membranes temporarily by binding to specific receptors on the cell surface. This binding can lead to changes in membrane potential and the initiation of muscle contraction or relaxation.
Which of the following factors does not affect membrane permeability?
The presence of membrane proteins does not directly affect membrane permeability. Membrane proteins mainly play a role in transport, signaling, and cell recognition rather than impacting the permeability of the membrane itself.
How does alcohol effect the cell membrane of onions?
The cell membrane is made up of a phospolipid bilayer, and these phospholipids are soluble in ethanol. Therefore, the membrane will be broken down (?). This increases the permeability of the cell membrane.
What will happen to a fresh potato cell if it is immersed in 80 percent alcohol. Note that the cell membrane is permeable to the alcohol molecules and also alcohol can disrupt the cell structure.?
Note that alcohol can also diffuse through the cell membrane as easy as water do. In addition, alcohol disrupt the structure of the cell membrane and increase the permeability of the cell membrane.
What has a more vigorous effect on cell membranes acid temperature or alcohol?
Alcohol affects the permeability of the cell membranes. It would have the most vigorous effect.
What is the effect of chloroform on membrane permeability?
Chloroform can disrupt the structure of cell membranes, leading to increased permeability. This disruption can cause leakage of cellular contents and loss of membrane integrity, ultimately leading to cell damage or death.
What effect does freezing have on membrane permeability?
Freezing can disrupt the structure of cell membranes, causing increased membrane permeability. This can lead to the leakage of cellular contents and potentially cell death. Additionally, ice crystal formation during freezing can physically damage cell membranes, further compromising their permeability.
Do low concentration increase membrane permeability?
Low concentrations of certain substances can increase membrane permeability by creating a gradient that allows for the passive diffusion of molecules across the membrane. For example, when the concentration of a solute outside a cell is lower than inside, it may promote the movement of water through osmosis, affecting the cell's membrane integrity. However, the effect on permeability also depends on the specific substance and the membrane's characteristics. Generally, lower concentrations alone do not universally increase membrane permeability; the overall context matters significantly.
Does an increase in cholesterol affect membrane permeability?
Yes, an increase in cholesterol can affect membrane permeability by making the cell membrane less fluid and more rigid, which can impact the movement of molecules in and out of the cell.
What is the permeability of the cell membranes?
A membrane is selectively permeable.
What is cell membrane permeability?
It is the ability of the membrane to allow ions and/or particles to cross.
What is the ability of a cell membrane to allow material to pass through it called?
permeability
The effect of acid on the cell membrane?
Acid can disrupt the structure of the cell membrane by breaking down phospholipids and proteins, leading to increased permeability and potential cell damage. The disruption of the cell membrane can result in leakage of cellular contents and loss of cell function, ultimately causing cell death.
What is the characteristic of a sell membrane that controls which substances can enter and exit the cell?
The selective permeability, also called semi-permeability, of the membrane controls which substances cant enter and exit the cell.
