336297
Which type of channel protein are available?
1 Large
2 Under controlled
3 Open
4 All are correct
Explanation:
The proteins form channels in the membrane for molecules to pass through. Some channels are always open; others can be controlled. Some are large, allowing a variety of molecules to cross.
BIOXI11: TRANSPORT IN PLANTS
336298
In terms of permeability, the cell wall and plasma membrane are
1 Non-permeable and differentially permeable
2 Both permeable
3 Permeable and differentially permeable
4 Both fully permeable
Explanation:
In terms of permeability, the cell wall is Permeable and plasma membrane is differentially permeable
BIOXI11: TRANSPORT IN PLANTS
336299
The main difference between active and passive transport across cell membrane is that
1 Active transport is very slow
2 Active transport is non selective
3 Passive transport is due to the concentration gradient across the cell membrane whereas active transport is against the conc. gradient
4 Passive transport is against the conc. gradient whereas active transport is across the cell membrane
Explanation:
Passive transport is due to the concentration gradient across the cell membrane whereas active transport is against the conc. gradient
BIOXI11: TRANSPORT IN PLANTS
336300
Carrier molecules, involved in facilitated diffusion
1 Increase the rate of transport
2 Undergoes conformational change upon binding of solutes
3 Do not use of ATP
4 All of them
Explanation:
All options are correct for carrier proteins involved in facilitated diffusion, as these facilitate the diffusion of hydrophilic substances through biological membrane. These are specific and allow the cells to select the solute of an appropriate size. Carrier proteins can increase the rate of diffusion and may undergo changes on binding with solutes
336297
Which type of channel protein are available?
1 Large
2 Under controlled
3 Open
4 All are correct
Explanation:
The proteins form channels in the membrane for molecules to pass through. Some channels are always open; others can be controlled. Some are large, allowing a variety of molecules to cross.
BIOXI11: TRANSPORT IN PLANTS
336298
In terms of permeability, the cell wall and plasma membrane are
1 Non-permeable and differentially permeable
2 Both permeable
3 Permeable and differentially permeable
4 Both fully permeable
Explanation:
In terms of permeability, the cell wall is Permeable and plasma membrane is differentially permeable
BIOXI11: TRANSPORT IN PLANTS
336299
The main difference between active and passive transport across cell membrane is that
1 Active transport is very slow
2 Active transport is non selective
3 Passive transport is due to the concentration gradient across the cell membrane whereas active transport is against the conc. gradient
4 Passive transport is against the conc. gradient whereas active transport is across the cell membrane
Explanation:
Passive transport is due to the concentration gradient across the cell membrane whereas active transport is against the conc. gradient
BIOXI11: TRANSPORT IN PLANTS
336300
Carrier molecules, involved in facilitated diffusion
1 Increase the rate of transport
2 Undergoes conformational change upon binding of solutes
3 Do not use of ATP
4 All of them
Explanation:
All options are correct for carrier proteins involved in facilitated diffusion, as these facilitate the diffusion of hydrophilic substances through biological membrane. These are specific and allow the cells to select the solute of an appropriate size. Carrier proteins can increase the rate of diffusion and may undergo changes on binding with solutes
336297
Which type of channel protein are available?
1 Large
2 Under controlled
3 Open
4 All are correct
Explanation:
The proteins form channels in the membrane for molecules to pass through. Some channels are always open; others can be controlled. Some are large, allowing a variety of molecules to cross.
BIOXI11: TRANSPORT IN PLANTS
336298
In terms of permeability, the cell wall and plasma membrane are
1 Non-permeable and differentially permeable
2 Both permeable
3 Permeable and differentially permeable
4 Both fully permeable
Explanation:
In terms of permeability, the cell wall is Permeable and plasma membrane is differentially permeable
BIOXI11: TRANSPORT IN PLANTS
336299
The main difference between active and passive transport across cell membrane is that
1 Active transport is very slow
2 Active transport is non selective
3 Passive transport is due to the concentration gradient across the cell membrane whereas active transport is against the conc. gradient
4 Passive transport is against the conc. gradient whereas active transport is across the cell membrane
Explanation:
Passive transport is due to the concentration gradient across the cell membrane whereas active transport is against the conc. gradient
BIOXI11: TRANSPORT IN PLANTS
336300
Carrier molecules, involved in facilitated diffusion
1 Increase the rate of transport
2 Undergoes conformational change upon binding of solutes
3 Do not use of ATP
4 All of them
Explanation:
All options are correct for carrier proteins involved in facilitated diffusion, as these facilitate the diffusion of hydrophilic substances through biological membrane. These are specific and allow the cells to select the solute of an appropriate size. Carrier proteins can increase the rate of diffusion and may undergo changes on binding with solutes
336297
Which type of channel protein are available?
1 Large
2 Under controlled
3 Open
4 All are correct
Explanation:
The proteins form channels in the membrane for molecules to pass through. Some channels are always open; others can be controlled. Some are large, allowing a variety of molecules to cross.
BIOXI11: TRANSPORT IN PLANTS
336298
In terms of permeability, the cell wall and plasma membrane are
1 Non-permeable and differentially permeable
2 Both permeable
3 Permeable and differentially permeable
4 Both fully permeable
Explanation:
In terms of permeability, the cell wall is Permeable and plasma membrane is differentially permeable
BIOXI11: TRANSPORT IN PLANTS
336299
The main difference between active and passive transport across cell membrane is that
1 Active transport is very slow
2 Active transport is non selective
3 Passive transport is due to the concentration gradient across the cell membrane whereas active transport is against the conc. gradient
4 Passive transport is against the conc. gradient whereas active transport is across the cell membrane
Explanation:
Passive transport is due to the concentration gradient across the cell membrane whereas active transport is against the conc. gradient
BIOXI11: TRANSPORT IN PLANTS
336300
Carrier molecules, involved in facilitated diffusion
1 Increase the rate of transport
2 Undergoes conformational change upon binding of solutes
3 Do not use of ATP
4 All of them
Explanation:
All options are correct for carrier proteins involved in facilitated diffusion, as these facilitate the diffusion of hydrophilic substances through biological membrane. These are specific and allow the cells to select the solute of an appropriate size. Carrier proteins can increase the rate of diffusion and may undergo changes on binding with solutes
