Advertisements
Advertisements
Question
The most appropriate characteristic of a semipermeable membrane is that
Options
it has minute pores
it has no pores
it allows the solute to pass through but not the solvent
it allows a solvent to pass through freely but prevents the passage of the solute
Advertisements
Solution
it allows a solvent to pass through freely but prevents the passage of the solute
RELATED QUESTIONS
The space between the cell wall and plasma membrane in a plasmolysed cell is filled with ______.
Explain why:
The leaves of wilted lettuce, if kept in cold water, become crisp.
Choose the correct answer:
Osmosis involves diffusion of ___________
Choose the correct answer:
Plasmolysis will occur when the cell is placed in a __________
What is the significance of diffusion?
Give Reasons for the following.
We gargle with saline water in case of throat infection.
In an experiment, two sets of apparatus were set up as shown below:
In A there is a concentrated sugar solution inside the thistle funnel and red ink in the water outside the funnel. In B there is a concentrated glucose solution with red ink inside the thistle funnel and water outside the thistle funnel.
In both A and B the level of liquid inside the funnels rises up the tubes. In A the sugar solution turns red and in B, the water turns red.
Study the given observations and answer these questions:
- Name the process by which red ink moves in A and B.
- Which type of pressure forces the water molecules to move towards thistle funnels and cause a rise in the water level?
- Where does this process occur in plants and animals?
- What material could be used as a semi-permeable membrane?
The beaker is divided into two chambers A and B. The big circle represents solute and the small circles solvent.
(i) What can you say about the size of the holes in the membrane, if it is to behave semi- permeably between these two?
(ii) Will the solvent molecules pass through the membrane from left to right, from right to left, in either direction or in both directions?
(iii) In which direction will there be a net movement of solvent molecules?
Name the following:
Condition of cell in which the cell content are shrunken.
When a cell in solution shrinks and loses its shape, then the solution is ______.
