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Question

?? ?? ?? ?? ?? ???? ??? ? la ??? ?Diffusion at home uab Exercise.docx· ×1 + × Egg # 3: Osmosis As stated before, osmosis specifically describes the passive diffusion of water across a membrane. Water moves down its concentration from an area of high concentration to low concentration. The region on one side of a membrane that has a high solute concentration relative to the other side of the membrane is said to be hypertonic; the region with the lower solute concentration is said to be hypotonic. If both sides contain the same concentration of solute, they are said to be isotonic to each other. 1. Consider the following figure. The circle in the box represents a cell in a solution; the circle represents its plasma membrane. Label the region that is hypertonic and the region that is hypotonic. If they are isotonic to each other, label both sides as such. 98% water 2% Solute 70% Water 3096 Solute

Explanation / Answer

In the first picture inside the circle (cell) solute concentration is 2% and outside concentration of solute is 30%. So in first picture inside the circle is hypotonic and outside the circle is hypertonic. Water will be go out from the circle (cell).

In the second picture cell has 2 % solute but outside has no solute only water. So, inside the the cell is hypertonic and outside of the cell is hypotonic. Water will flow inside the circle (cell) from the environment/outside .

In the third pic inside the circle and outside the circle both have same concentration of solute . so both are in isotonic condition . Water will neither goes in nor goes out.

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