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In case sucrose does diffuse out of the membrane will the equilibrium of water and sucrose be ever reached?
If sucrose diffuses out of the membrane, it could disrupt the concentration gradient, potentially leading to water moving in the opposite direction to compensate for the change in solute concentration. However, equilibrium between water and sucrose would not be reached if the sucrose continues to diffuse out. Equilibrium occurs when the concentrations of solute and solvent are balanced on both sides of the membrane, which may not happen if sucrose is consistently leaving the system. Therefore, the dynamic balance would be affected, preventing a stable equilibrium.
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What is the movement of sucrose molecules called?
The movement of sucrose molecules is called diffusion, which is the process of molecules spreading out from an area of high concentration to an area of low concentration. This movement occurs until equilibrium is reached.
Do living Cells reach equilibrium?
Living cells do not reach equilibrium because they are constantly taking in nutrients, expelling waste, and carrying out various metabolic activities to maintain internal balance. Equilibrium would mean no net movement of molecules or energy, which would prevent essential cellular processes from occurring.
In plants that use an apoplastic route for sucrose to move from mesophyll cells to the phloem what would NOT occur if a protein was inserted into the plasma membrane that allowed hyd?
hydrogen ions to leak across it?Feedback on your choices will appear here. Sucrose would be moved more quickly back into the cell cytoplasm by cotransport.The apoplastic space would become more basic.The rate of phloem loading would decrease.The concentration of sucrose in the apoplastic space would increase.Proton pumps in the plasma membrane would run at the same rate or even a little faster.A.B.C.D.E.Keywords:Submit Score& Logout
What is sucrose's electronegativity?
The electronegativity of sucrose is not determined by the sucrose molecule itself, but rather by the individual atoms that make up sucrose. Sucrose is composed of carbon, hydrogen, and oxygen atoms, each with their own electronegativity values. The overall electronegativity of sucrose is a weighted average of the electronegativities of these individual atoms.
Why is it that when you put a potato in a high concentration of sucrose solution does its weight decrease?
This is because the potato, which is mostly water, is in a hypertonic solution (a solution with less water and more solute --here, sucrose-- than the potato). Since the solutions want to reach equilibrium (equal amounts of sucrose and water in both the solution and the potato), water diffuses out of the potato and sucrose diffuses into it. The potato loses its water weight, and sucrose doesn't replace the weight lost, the potato weighs less.
Why did osmosis, but not diffusion of sucrose molecules, occur across the dialysis membrane containing 20% sucrose solution?
Sucrose cannot diffuse across a dialysis tubing. This is because it's size is too large to go through the tubing. Water can diffuse across.
What is the movement of sucrose molecules called?
The movement of sucrose molecules is called diffusion, which is the process of molecules spreading out from an area of high concentration to an area of low concentration. This movement occurs until equilibrium is reached.
Does sugar diffuse through the cell membrane?
No. Only non-polar, small molecules can pass through a membrane by simple diffusion. A sucrose molecule is too large a molecule to pass through a membrane by simple diffusion, however, it can pass through a plasma membrane (but not any artificial membranes like Visking tubings) by facilitated diffusion, i.e. through transport proteins(specific carriers for sucrose) embedded in the membranes. ! =)
What can you conclude about the permeability of potato cytoplasm with respect to sucrose and water molecules?
The permeability of potato cytoplasm to water molecules is high, allowing water to easily move in and out of the cell. However, the permeability to sucrose molecules is lower, as they require specific transport proteins to pass through the cell membrane. This difference in permeability affects how sucrose and water move across the cell membrane in potatoes.
Can sucrose enter the cells by osmosis?
No, sucrose cannot enter cells by osmosis. Osmosis is the movement of water across a semi-permeable membrane from an area of low solute concentration to an area of high solute concentration. Sucrose is a large molecule and cannot pass through the cell membrane via osmosis.
How is dialysis membrane selectively permeable?
a dialysis membrane is selectively permeable, it is used in experiments to simulate cellular membranes, and it is permeable to water but not to sucrose.
Why is a dialysis membrane not permeable to sucrose?
No; the sucrose molecule (as a disaccharide) is too large to pass through by passive diffusion. Glucose, on the other hand, (a monosaccharide) is able to permeate the dialysis tubing. In the body, glucose/sucrose is transmitted across membranes though the use of active/facilitated diffusion.
Is the Visking tubing a partailly permeable membrane and why?
Yes, it is a partially permeable membrane. It allows certain substances like glucose and water molecules to diffuse through but not large molecules like starch and sucrose. Selectively permeable.
Does sucrose have an effect in diffusion?
Sucrose can affect diffusion as it can slow down the movement of molecules across a membrane. This is because sucrose is a larger molecule compared to other substances commonly involved in diffusion. It can create a barrier that hinders the rate of diffusion.
What happens when sucrose is taken up by active transport?
Outside the cell is high concentration of hydrogen ions and low concentration of sucrose. Inside, is the opposite, low concentration of hydrogen ions, and high concentrations of sucrose. Cells use ATP to pump a hydrogen ion across the cell membrane, against the concentration gradient, and when the hydrogen ion goes to re-enter, it goes through a Sucrose-proton cotransporter. This means that the hydrogen ion (proton) take a sucrose molecule with it when it goes though the membrane.
In this experiment there was a positive sucrose uptake Sucrose probably entered the cells by what means?
Sucrose likely entered the cells through a process called facilitated diffusion, which involves the use of specific carrier proteins to transport the molecule across the cell membrane. The carrier proteins help move the sucrose down its concentration gradient into the cells without requiring energy input from the cell.
Is there sucrose in feces?
No, there is not sucrose in feces. This is because sucrose is only in food that is not digested.
