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Osmosis Graded Questions

Anatomy and Physiology9 CardsCreated 4 months ago

This flashcard deck covers key concepts of osmosis, including molecular movement, pressure effects, and equilibrium states.

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During osmosis, individual molecules move:

All directions with equal probability
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Key Terms

Term
Definition
During osmosis, individual molecules move:
All directions with equal probability
When the SimCell membrane in the Cell-O-Scope simulator jiggled back and forth, this was due to:
pressure against the membrane
Placing blood cells into a solution that is hypertonic to the cells will cause the osmotic pressure of the cells to:
decrease
Placing blood cells into a solution that is isotonic to the cells will cause the osmotic pressure of the cells to:
Neither increase nor decrease
According to the rules of osmosis, at what point will a system reach a state of equilibrium?
A system will reach equilibrium when the concentration of solute molecules on both sides of a water-permeable membrane are equal.
A SimCell with a water-permeable membrane that contains 20 hemoglobin molecules and 480 water molecules is placed into an extracellular fluid that contains 20 dextrose molecules and 480 water molecules. Which of the following should happen?
Water molecules will move back and forth equally across the membrane
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Osmosis Graded Questions
TermDefinition
During osmosis, individual molecules move:
All directions with equal probability
When the SimCell membrane in the Cell-O-Scope simulator jiggled back and forth, this was due to:
pressure against the membrane
Placing blood cells into a solution that is hypertonic to the cells will cause the osmotic pressure of the cells to:
decrease
Placing blood cells into a solution that is isotonic to the cells will cause the osmotic pressure of the cells to:
Neither increase nor decrease
According to the rules of osmosis, at what point will a system reach a state of equilibrium?
A system will reach equilibrium when the concentration of solute molecules on both sides of a water-permeable membrane are equal.
A SimCell with a water-permeable membrane that contains 20 hemoglobin molecules and 480 water molecules is placed into an extracellular fluid that contains 20 dextrose molecules and 480 water molecules. Which of the following should happen?
Water molecules will move back and forth equally across the membrane
A SimCell has a special membrane that is permeable to alcohol but not to water. This SimCell contains 20% alcohol and 80% water and is placed in a solution containing 40% alcohol and 60% water. What will happen to the cell?
It will expand due to net movement of alcohol into the cell.
A SimCell with a water-permeable membrane that contains 20 hemoglobin molecules and 480 water molecules is placed into an extracellular fluid that contains 40 dextrose molecules and 960 water molecules. Which of the following should happen?
More water molecules will flow from the extra cellular fluid into the SimCell than from the SimCell into the extracellular fluid.
Fish that live in saltwater and fish that live in freshwater both have water balance challenges that deal with osmosis. What is the best characterization of the challenges for each, based on your investigations in this lab?
Freshwater fish must get rid of excess water and saltwater fish must retain the water they have.