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Question
Give Reasons for the following.
It is necessary to maintain a normal osmotic concentration of the blood.
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Solution
Osmotic pressure is maintained in blood to prevent dehydration leading to shrinkage of cells.
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RELATED QUESTIONS
The space between the cell wall and plasma membrane in a plasmolysed cell is filled with ______.
Complete the following statements:
Hypotonic solution is one in which the solution kept outside the cell has lower solute concentration than ……………… the cell.
Define the following:
Osmosis
Distinguish between the following:
Hypotonic and Hypertonic solutions
Name the following:
The pressure with which the molecules of a substance diffuse.
Define the cohesive force.
Give Reasons for the following.
Plants begin to die when the excess of soluble fertilizers are added to the soil?
In the figure below ‘A’ shows a cell in the normal state and ‘B’ shows the same cell after leaving it in a certain solution for a few minutes.
(i) Describe the change which has occurred in the cell as seen in B.
(ii) Give the technical term for the condition of the cell as reached in B and as it was in A.
(iii) Define the process which led to this condition.
(iv) What was the solution-isotonic, hypotonic or hypertonic, in which the cell was kept?
(v) How can the cell in B, be brought back to its original condition?
(vi) Name the parts numbered 1 to 3.
Multiple Choice Question:
Osmosis involves:
DPD of a cell can be expressed as ______
