THE CELL
TRANSPORT INTO AND OUT OF THE CELL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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hypotonic, the celery sticks increase in size
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hypertonic, the celery sticks reduce in size
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isotonic, the celery sticks remains in size
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Detailed explanation-1: -Solutions. Description: A piece of celery (or carrot, potato, etc) is placed in a salt solution. The piece of celery or carrot will shrivel. Conversely, when celery is placed in a deionized water solution, it will swell.
Detailed explanation-2: -A hypotonic solution is one that contains higher solute concentration than the outer concentration. The celery cells have more concentration than pure water. As such the molecules of water will move from the outside to the celery cell and they will swell.
Detailed explanation-3: -When celery is put is distilled water, celery has higher solute concentration than water. So, flow of water (solvent) happens towards the celery. Hence, celery gains mass because of absorbing water.
Detailed explanation-4: -In contrast, when the celery stalks are placed in salt water, they become limp because water has left the cells and the turgor pressure has decreased. Since water is flowing out of the cells, the salt water must be higher in solute concentration than the celery stalks, making the stalks hypotonic to the salt water.
Detailed explanation-5: -In osmosis, water moves from hypotonic solutions to hypertonic solutions. Thus, since water enters celery cells in fresh water, the celery must be hypertonic to freshwater.