What two things are needed for Osmosis to take place?
two solutions with different concentrations and a partially permeable membrane to separate them
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What is Osmosis?
Osmosis is the net movement of water from a less concentrated solution (more dilute - more water) to a more concentrated solution through a partially permeable membrane.
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What is an Isotonic Solution?
When the concentration of solutes in the solution outside the cell is the same as the internal concentration
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What is an Hypertonic Solution?
When the concentration of solutes in the solution outside the cell is higher as the internal concentration
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What is an Hypotonic Solution?
When the concentration of solutes in the solution outside the cell is lower as the internal concentration
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How do you calculate the percentage change during osmosis?
Change is mass divided by mass you started with, multiplied by 100
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Give an example of a solvent
Water
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Give an example of a solute.
Salt, Sugar or anything that can be dissolved in water
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What is active transport?
Movement of molecules/ions from low concentration to high concentration against a concentration gradient
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Why is active transport important for plants?
Because they can get nutrients and ions from soil where they are in very low concentration
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Why is active transport important for us?
So that we can absorb glucose from our food into our blood.
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Other cards in this set
Card 2
Front
What is Osmosis?
Back
Osmosis is the net movement of water from a less concentrated solution (more dilute - more water) to a more concentrated solution through a partially permeable membrane.
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