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If there is more solute inside a membrane than outside solute particles will move across the membrane to the?
Wiki User
∙ 12y ago
Concentration Gradient
Wiki User
∙ 12y ago
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When does diffusion occur across a cell membrane?
Diffusion across a cell membrane occurs when concentrations of a substance are higher either inside or outside the cell.
Why is plasma membrane flexible?
Because it is a semi permeable membrane IE. it only allows selective particles to go inside it and outside it.
In an isotonic environment would there be an equal movement of water across the cell membrane?
There would be no net movement of water across the membrane because the amount of solute inside and outside of the membrane is equal.
What functions to membrane proteins have?
The plasma membrane proteins have many functions. They pass on information through the membrane, they give the cell structural support and recognize different particles within the cell, and they are also transporters.
In diffiusion movement of particles across a membrane is drven by what differences?
In diffusion, the movement of particles across a membrane is driven by an electrochemical gradient-the ion's concentration gradient and the membrane potential. Substances will passively diffuse down their concentration gradient to where they are less concentrated. Since the inside of a cell is negative compared to its outside, the membrane potential will drive the passive transport of cations into the cell and anions out of the cell due to electrostatic attractions.
What is the significance of the respiratory membrane?
A Membrane is responsible for all the movements of particles inside or outside the cell.
When does diffusion occur across a cell membrane?
Diffusion across a cell membrane occurs when concentrations of a substance are higher either inside or outside the cell.
Why is plasma membrane flexible?
Because it is a semi permeable membrane IE. it only allows selective particles to go inside it and outside it.
Why is energy needed to move the particles across the plasma membrane?
Energy is only necessary for diffusion if the particles are being moved across the membrane against the gradient. ATP is necessary for this active transport as particles are moved from low concentrations to higher concentrations across the membrane. This is because passive transport, which does not use energy, only works to move particles down their concentration gradient. Ex. Such active transport is used in neuron cells to have a different charge inside and outside of the cell so that it can relay electric signals.
In an isotonic environment would there be an equal movement of water across the cell membrane?
There would be no net movement of water across the membrane because the amount of solute inside and outside of the membrane is equal.
If the inside and outside of a cell are both isotonic does water still move across the cell membrane?
no
What functions to membrane proteins have?
The plasma membrane proteins have many functions. They pass on information through the membrane, they give the cell structural support and recognize different particles within the cell, and they are also transporters.
What are function of membrane proteins?
Membrane proteins have a variety of functions. They relay signals between the cell's inside and outside environments. Transport proteins move the molecules across the membrane.
What is the process of expelling particles or liquids outside the cell membrane called?
The process by which the plasma membrane surrounds the substance inside the cell and moves it outside the cell is called EXOCYTOSIS.
In diffiusion movement of particles across a membrane is drven by what differences?
In diffusion, the movement of particles across a membrane is driven by an electrochemical gradient-the ion's concentration gradient and the membrane potential. Substances will passively diffuse down their concentration gradient to where they are less concentrated. Since the inside of a cell is negative compared to its outside, the membrane potential will drive the passive transport of cations into the cell and anions out of the cell due to electrostatic attractions.
Compared to the inside of the resting plasma membrane the outside surface of the membrane is?
The outside is slightly positive while the inside is slightly negative.
In the absence of stimuli all cells in the body maintain a potential difference across the semipermeable membrane in which the inside of the cell is negatively charged in comparison to the outside?
resting membrane potential
