If the concentration of a gas is the same on both sides of a membrane that...
If the concentration of a gas is the same on both sides of a membrane that would allow diffusion of the gas through the membrane, none of the gas will diffuse through the membrane
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If the concentration of a gas is the same on both sides of a
membrane that...
The picture below shows 4 different electrochemical gradients (A, B, C, D) across a membrane which...
The picture below shows 4 different electrochemical gradients
(A, B, C, D) across a membrane which contains pores that, when
open, allow the indicated ion to diffuse through the membrane:
Which gradient(s) provide the strongest driving force for the
NET diffusion of that particular ion across the membrane (in either
direction) when the pore is open (circle all that apply
above)?
membrane + + + + + + + + + + + + + + + + + +...
both questions please Describe the fluid- mosaic model of membrane structure. Define all the components and...
both questions please
Describe the fluid- mosaic model of membrane structure. Define all the components and explain why the liquid crystal consistency is important. TT T Arial - 3(120) T E . . 25 Pathep Words QUESTION 5 Why can't larger polar molecules and ions diffuse through the plasma membrane? Explain. Would it be advantageous to the cell if they could? Explain.
How are facilitated diffusion and diffusion similar? Both processes involve the movement of solute from an...
How are facilitated diffusion and diffusion similar?
Both processes involve the movement of solute from an area of
low concentration to an area of high concentration.
Both processes involve the movement of solute from an area of
high concentration to an area of low concentration.
In both kinds of movement across a cell membrane, proteins do
not play a role in assisting the passage of compounds and ions
through a membrane.
In both kinds of movement across a cell membrane,...
5.09 Problem 5.09 A sheet of steel 1.5 mm thick has nitrogen atmospheres on both sides...
5.09
Problem 5.09 A sheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 12 OC and is permitted to achieve a steady-state diffusion condition. The diffusion coefficient for nitrogen in steel at this temperature is 5.5 × 10-11 m2/s and the diffusion flux s found to be 4.)× 10 7 kg/m2-s Also, t is known that the concentration of nit ogen in the steel at the high pressure surface s 60 kg m3 Ho far into...
3. You are characterizing an isolated membrane protein. The protein is exposed on both sides of...
3. You are characterizing an isolated membrane protein. The protein is exposed on both sides of the membrane. Over much of the central part of its surface, there are hydrophobic amino acids, while the ends are hydrophilic. It crosses the membrane a number of times. There is an opening in the center of this protein lined by hydrophilic amino acids. What kind of protein is this and what is its probable function?
Assume that the plasma membrane of a cell was suddenly permeable to the same degree to...
Assume that the plasma membrane of a cell was suddenly permeable to the same degree to both Na+ and K+ and that both ions were present at a concentration gradient of the same magnitude. What would you expect to happen?
Problem: When alpha-iron is subjected to an atmosphere of hydrogen gas, the concentration of hydrogen in...
Problem: When alpha-iron is subjected to an atmosphere of hydrogen gas, the concentration of hydrogen in the iron, CH (in weight percent), is a function of hydrogen pressure, PH2 (in Mpa), and asbsolute temperature (T) according to Ch= 1.34 x 10-2 sqrt(PH) exp(- (27.2KJ/mol) /RT) Consider a thin iron membrane with the thickness and temperature listed below. Calculate the flux in (kg/(m²-s)) through this membrane if the hydrogen pressure on one side of the membrane is 0.17 MPa, and on...
Problem 5.09 A sheet of steel 3.6 mm thick has nitrogen atmospheres on both sides at...
Problem 5.09 A sheet of steel 3.6 mm thick has nitrogen atmospheres on both sides at 1200°C and is permitted to achieve a steady-state diffusion condition. The diffusion coefficient for nitrogen in steel at this temperature is 6.9 x 10-11 m2/s, and the diffusion flux is found to be 3.9 x 10 kg/m2-s Also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4.7 kg/m3. How far into the sheet from this high...
Choose true or false for each of the statements regarding gas exchange across the respiratory membranes....
Choose true or false for each of the statements regarding gas exchange across the respiratory membranes. 1. The thinner the membranes, the more readily gas exchange occurs. True False 2. CO2 has a diffusion coefficient of 20, and oxygen has a diffusion coefficient of 1; therefore CO2 does not diffuse as readily through the membranes as oxygen. True False 3. A larger surface area allows for more gas exchange. True False 4. Gas exchange occurs across membranes from areas of low concentration to high concentration True...
An unknown gas is found to diffuse through a porous membrane 2.92 times more slowly than...
An unknown gas is found to diffuse through a porous membrane 2.92 times more slowly than H2. What is the molar mass of the gas? Group of answer choices a. 5.84 g/mol b. 8.52 g/mol c. 17.0 g/mol d. 30.0 g/mol
The picture below shows 4 different electrochemical gradients
(A, B, C, D) across a membrane which contains pores that, when
open, allow the indicated ion to diffuse through the membrane:
Which gradient(s) provide the strongest driving force for the
NET diffusion of that particular ion across the membrane (in either
direction) when the pore is open (circle all that apply
above)?
membrane + + + + + + + + + + + + + + + + + +...
both questions please
Describe the fluid- mosaic model of membrane structure. Define all the components and explain why the liquid crystal consistency is important. TT T Arial - 3(120) T E . . 25 Pathep Words QUESTION 5 Why can't larger polar molecules and ions diffuse through the plasma membrane? Explain. Would it be advantageous to the cell if they could? Explain.
How are facilitated diffusion and diffusion similar?
Both processes involve the movement of solute from an area of
low concentration to an area of high concentration.
Both processes involve the movement of solute from an area of
high concentration to an area of low concentration.
In both kinds of movement across a cell membrane, proteins do
not play a role in assisting the passage of compounds and ions
through a membrane.
In both kinds of movement across a cell membrane,...
5.09
Problem 5.09 A sheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 12 OC and is permitted to achieve a steady-state diffusion condition. The diffusion coefficient for nitrogen in steel at this temperature is 5.5 × 10-11 m2/s and the diffusion flux s found to be 4.)× 10 7 kg/m2-s Also, t is known that the concentration of nit ogen in the steel at the high pressure surface s 60 kg m3 Ho far into...
Problem: When alpha-iron is subjected to an atmosphere of hydrogen gas, the concentration of hydrogen in the iron, CH (in weight percent), is a function of hydrogen pressure, PH2 (in Mpa), and asbsolute temperature (T) according to Ch= 1.34 x 10-2 sqrt(PH) exp(- (27.2KJ/mol) /RT) Consider a thin iron membrane with the thickness and temperature listed below. Calculate the flux in (kg/(m²-s)) through this membrane if the hydrogen pressure on one side of the membrane is 0.17 MPa, and on...
Problem 5.09 A sheet of steel 3.6 mm thick has nitrogen atmospheres on both sides at 1200°C and is permitted to achieve a steady-state diffusion condition. The diffusion coefficient for nitrogen in steel at this temperature is 6.9 x 10-11 m2/s, and the diffusion flux is found to be 3.9 x 10 kg/m2-s Also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4.7 kg/m3. How far into the sheet from this high...
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