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What is the process of passive transport of molecules or ions across a cell membrane via specific transmembrane proteins?
What is the process of passive transport of molecules or ions across a cell membrane via specific transmembrane proteins?
- Facilitated diffusion (correct)
- Active transport
- Osmosis
- Channel protein transport
What is the tendency for molecules to spread out evenly into the available space called?
What is the tendency for molecules to spread out evenly into the available space called?
- Diffusion (correct)
- Osmosis
- Active transport
- Facilitated diffusion
What is the ability of a solution to cause a cell to gain or lose water called?
What is the ability of a solution to cause a cell to gain or lose water called?
- Osmosis
- Active transport
- Tonicity (correct)
- Facilitated diffusion
What is the control of water balance called?
What is the control of water balance called?
What is the movement of bio-chemicals from areas of high concentration to areas of low concentration without the requirement of energy called?
What is the movement of bio-chemicals from areas of high concentration to areas of low concentration without the requirement of energy called?
What is the movement of bio-chemicals from areas of low concentration to areas of high concentration and therefore requires energy called?
What is the movement of bio-chemicals from areas of low concentration to areas of high concentration and therefore requires energy called?
What is the difference in concentration of a substance from one area to another called?
What is the difference in concentration of a substance from one area to another called?
What is the diffusion of water across a selectively permeable membrane called?
What is the diffusion of water across a selectively permeable membrane called?
What is the process of passive transport of molecules or ions across a cell membrane via specific transmembrane proteins called?
What is the process of passive transport of molecules or ions across a cell membrane via specific transmembrane proteins called?
What is the ability of a solution to cause a cell to gain or lose water called?
What is the ability of a solution to cause a cell to gain or lose water called?
What is the control of water balance called?
What is the control of water balance called?
What is the movement of bio-chemicals from areas of high concentration to areas of low concentration without the requirement of energy called?
What is the movement of bio-chemicals from areas of high concentration to areas of low concentration without the requirement of energy called?
What is the plasma membrane boundary that separates the living cell from its surroundings called?
What is the plasma membrane boundary that separates the living cell from its surroundings called?
What does the fluid mosaic model state about the membrane structure?
What does the fluid mosaic model state about the membrane structure?
Who proposed that the membrane is a mosaic of proteins dispersed within the bilayer?
Who proposed that the membrane is a mosaic of proteins dispersed within the bilayer?
What is the boundary that separates the living cell from its surroundings called?
What is the boundary that separates the living cell from its surroundings called?
What is the structure of the plasma membrane according to the fluid mosaic model?
What is the structure of the plasma membrane according to the fluid mosaic model?
Who proposed the fluid mosaic model of the membrane structure?
Who proposed the fluid mosaic model of the membrane structure?
What is the selective permeability of the plasma membrane responsible for?
What is the selective permeability of the plasma membrane responsible for?
What is the structure of the plasma membrane according to the fluid mosaic model?
What is the structure of the plasma membrane according to the fluid mosaic model?
What do phospholipids in the plasma membrane contain?
What do phospholipids in the plasma membrane contain?
What did J. Singer and G. Nicolson propose about the membrane structure in 1972?
What did J. Singer and G. Nicolson propose about the membrane structure in 1972?
What is the boundary that separates the living cell from its surroundings called?
What is the boundary that separates the living cell from its surroundings called?
What is the selective permeability of the plasma membrane responsible for?
What is the selective permeability of the plasma membrane responsible for?
Phospholipids contain both hydrophobic and hydrophilic regions.
Phospholipids contain both hydrophobic and hydrophilic regions.
The plasma membrane is a rigid structure with no fluidity.
The plasma membrane is a rigid structure with no fluidity.
The fluid mosaic model proposes that the plasma membrane is a fluid structure with a mosaic of various macromolecules embedded in it.
The fluid mosaic model proposes that the plasma membrane is a fluid structure with a mosaic of various macromolecules embedded in it.
The plasma membrane is a single layer of phospholipids.
The plasma membrane is a single layer of phospholipids.
J. Singer and G. Nicolson proposed that the membrane is a mosaic of proteins dispersed within the bilayer, with only the hydrophobic regions exposed to water.
J. Singer and G. Nicolson proposed that the membrane is a mosaic of proteins dispersed within the bilayer, with only the hydrophobic regions exposed to water.
The selective permeability of the plasma membrane allows all substances to cross it equally.
The selective permeability of the plasma membrane allows all substances to cross it equally.
The plasma membrane exhibits selective permeability, allowing some substances to cross it more easily than others.
The plasma membrane exhibits selective permeability, allowing some substances to cross it more easily than others.
The fluid mosaic model states that a membrane is a rigid structure with no movement.
The fluid mosaic model states that a membrane is a rigid structure with no movement.
The plasma membrane consists of a single layer of proteins.
The plasma membrane consists of a single layer of proteins.
The fluid mosaic model of the membrane structure was proposed in 1972.
The fluid mosaic model of the membrane structure was proposed in 1972.
The plasma membrane has two layers (a bilayer) of phospholipids.
The plasma membrane has two layers (a bilayer) of phospholipids.
The plasma membrane is the boundary that separates the dead cell from its surroundings.
The plasma membrane is the boundary that separates the dead cell from its surroundings.
Passive transport requires energy to move bio-chemicals from areas of high concentration to areas of low concentration.
Passive transport requires energy to move bio-chemicals from areas of high concentration to areas of low concentration.
Facilitated diffusion is an example of active transport.
Facilitated diffusion is an example of active transport.
Osmosis is the movement of water across a selectively permeable membrane.
Osmosis is the movement of water across a selectively permeable membrane.
Tonicity refers to the ability of a solution to cause a cell to gain or lose water.
Tonicity refers to the ability of a solution to cause a cell to gain or lose water.
Cell walls help maintain water balance in plant cells.
Cell walls help maintain water balance in plant cells.
Active transport requires energy to move bio-chemicals from areas of low concentration to areas of high concentration.
Active transport requires energy to move bio-chemicals from areas of low concentration to areas of high concentration.
Channel proteins can transport molecules against their concentration gradient.
Channel proteins can transport molecules against their concentration gradient.
Carrier proteins can transport molecules against their concentration gradient.
Carrier proteins can transport molecules against their concentration gradient.
Channel proteins transport both water-soluble and insoluble molecules.
Channel proteins transport both water-soluble and insoluble molecules.
Carrier proteins mediate only passive transport.
Carrier proteins mediate only passive transport.
Passive transport is the movement of bio-chemicals from areas of low concentration to areas of high concentration.
Passive transport is the movement of bio-chemicals from areas of low concentration to areas of high concentration.
Active transport can transport glucose, sodium, and potassium ions.
Active transport can transport glucose, sodium, and potassium ions.
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