0
Why water and ions can pass through the plasma membrance easily?
Wiki User
∙ 10y ago
The plasma membrane is provided with very small passages to allow the molecules of water and ions of other elements. It is made up of lipo-proteins and has semipermeability.
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
What is actively transported across plasma membranes?
name of the substance that is actively transported through the cell membrance of an animal cell
What are the principle components of plasma membrance and membrance surrounding cell organelles?
Phospholipids are the principle component behind plasma membranes and the membranes surrounding cell organelles. They create a hydrophobic (water repellent) boundary that keeps what's needed in and what's not, out.
Water crosses plasma membranes through specialized channels?
Water crosses plasma membranes through specialized channels called diffusion and concentrated gradient.
Why do most substances have to be assisted through the plasma membrane?
The plasma membrane is made from tightlypack phospholipids. The plasma membrane prevents polar molecules and large molecules from diffusing freely. Fatty (lipophilic) molecules can easily pass through. since cells often need water soluble materials such as water and sugars, transporters and pores need to be made out of proteins to let those molecules through. One of the most important pumps is the Na+/K+ ATPase pump which maintains gradients of sodium and potassium across the cell membrane
What is the forcing of water and solutes through plasma membranes by blood pressure?
osmosis
What is actively transported across plasma membranes?
name of the substance that is actively transported through the cell membrance of an animal cell
What are the principle components of plasma membrance and membrance surrounding cell organelles?
Phospholipids are the principle component behind plasma membranes and the membranes surrounding cell organelles. They create a hydrophobic (water repellent) boundary that keeps what's needed in and what's not, out.
Water crosses plasma membranes through specialized channels?
Water crosses plasma membranes through specialized channels called diffusion and concentrated gradient.
Osmosis is the diffusion of?
Osmosis is the diffusion of water across the cell membrance
Why do most substances have to be assisted through the plasma membrane?
The plasma membrane is made from tightlypack phospholipids. The plasma membrane prevents polar molecules and large molecules from diffusing freely. Fatty (lipophilic) molecules can easily pass through. since cells often need water soluble materials such as water and sugars, transporters and pores need to be made out of proteins to let those molecules through. One of the most important pumps is the Na+/K+ ATPase pump which maintains gradients of sodium and potassium across the cell membrane
What is the forcing of water and solutes through plasma membranes by blood pressure?
osmosis
What are mostly water and function as the medium through which blood cells and platelets are transported through the body?
plasma
Osmosis can only if water travels through what?
Water molecules travel through the plasma membrane, tonoplast membrane. In biological systems, the solvent is typically water.
What is the difference between the processes of osmosis and diffusion?
Diffusion is the movement of a substance from an area of high concentration to an area of low concentration. Osmosis is the movement of water from an area of high concentration to an area of low concentration through a semi-permable membrance.
Through what structure does water oxygen and carbon dioxide can enter a cell?
Water, carbon dioxide and oxygen can enter a cell through the plasma membrane.
What creates selective permebility of plasma membrane?
It is because of the make up of the membrane. Most of the bilayer is hydrophobic; therefore water or water-soluble molecules do not pass through easily. Other do pass through easily. A cell controls what moves through the membrane by means of membrane proteins embedded in the phospholipid bilayer.
Plasma consists mostly of?
Plasma consists mostly of water.
