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Wiki User
∙ 12y ago
Wiki User
∙ 12y agoYes
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What is osmotic rate?
the change of osmotic pressure over time
What happen during the facilitated diffusion?
Facilitated diffusion occurs against the osmotic potential/concentration gradient and requires energy at the expense of the ATP hydrolysis. There are several way in which this diffusion could occur in the cells. The first one being the ion exchangers. The ion exchangers are coupled with ATPase activity and they exchange ion(s) across the membrane. The most classical example of ion exchanger is the Na+/K+ ion exchanger and Ca+ ATPase. Other way of the facilitated diffusion in the ion channel. These could be voltage gated channel that open in response to the change in the membrane potential and the other being ligand gated channel that operate under the effect of ligand binding.
How do net hydrostatic pressure and net osmotic pressure each change along the length of a capillary?
Net osmotic pressure stays about the same and net hydrostatic pressure decreases.
The pressure that is exerted on the inside of cell walls and that is caused by the movement of water into the cell?
Osmotic pressure across the cell wall, here called Turgor Pressure.
A solutions osmotic pressure differs from its hydrostatic pressure in that osmotic pressure is the force which pulls water across a membrane resulting from?
osmotic pressure is not the pressure which pulls the water , it is the other way round. It is the pressure with which the water molecule travel across the semi-permeable membrane. Hydrostatic pressure as the name suggests is the pressure due to the "standing column of water and not due to the movement
What does facilitated diffusion do in a cell?
It allows for the flow of substances which are normally too large to pass through the cell membrane. Like active transport, it accomplishes this using channel proteins coded for each specific substance (sugar, for example). Unlike active transport, facilitated diffusion only works WITH the osmotic pressure gradient, not against.
What is the different between turgor pressure and diffusion?
The difference of turgor pressure and diffusion is that turgor pressure is an osmotic pressure exerted by the contents of a plant cell against its cell wall; while diffusion is a movement of molecules from an area higher concentration to an area lower concentration.
What is diffusion pressure deficit?
Water potential of protoplasm of the cell is equal but opposite in sign to the diffusion pressure deficit(DPD) or suction pressure(SP).Thus DPD of an osmotic system is the water potential in terms of energy.DPD is expressed in positive value.
What term refers to diffusion of water molecules through a selectively preamble membrane?
Osmosis is the diffusion of water molecules through a semi-permeable membrane to equalise osmotic pressure.
Blood flow through capillaries is controlled by?
Pressure. Capillaries are small so the force of blood coming from the heart is at greater pressure when it reaches the tiny capillaries. Pressure forces the diffusion of particles in and the osmotic diffusion of substances out (mainly metabolic wastes) to the veins.
What is the pressure for diffusion that is produced by the concentration gradient?
Osmotic Pressure. It exists anywhere that there is a soluble substance concentration gradient; that is, not only when a membrane separates substance concentrations. See: Brownian Motion.
What is the relationship between TDS and osmotic pressure?
TDS increases the osmotic pressure. From the formula, Osmotic pressure = CRT. C as the concentration in mol / L; R = gas constant; T = temperature. The higher the concentration of the solids, the higher is its osmotic pressure.
Which of the colligative properties is not dependent on vapor pressure boiling point elevation vapor pressure reduction osmotic pressure?
Osmotic pressure.
What do plasma proteins that remain in the blood capillaries help?
Maintain the osmotic pressure of the blood
Calculate the osmotic pressure of 0.500 M sodium chloride at 25oC.?
The osmotic pressure is 24,44 at.
What is the component of plasma that maintains the osmotic pressure of blood?
The component of plasma that maintains the osmotic pressure of blood is protein. The protein albumin and others maintain osmotic pressure in blood.
What is osmotic rate?
the change of osmotic pressure over time
