Diffusion Flashcards
Osmosis is what?
Diffusion of water
What occurs during osmosis?
Occurs across a membrane freely
Factors that affect diffusion rate are what?
Size of the quadrant Distance Size of the molecule Temperature Electrical forces
Osmosis occurs across what and how?
A membrane freely
What is osmosis permeable to? Freely or not freely.
It is freely permeable to water
Is osmosis permeable to solute? Freely or not freely?
Yes osmosis is permeable to solute not freely
What is the difference between osmosis to water and solute? How are they the same?
They are different because osmosis is freely permeable to water but is not freely permeable by solute.
They are the same because osmosis is permeable to both water and solute.
Where does water flow toward during osmosis?
The side with the least amount of solute. (Less water)
Osmosis accounts for fluid shifts in the body called what and why?
ICF &ECF to maintain homeostasis
What is force of flow
It is osmotic pressure; the pressure required to prevent osmosis
What is osmotic pressure?
The pressure required to prevent osmosis
What is Fluid/ Electrolyte Equilibrium?
When intracellular fluid& extra cellular fluid have the same concentration. They are isotonic with each other so there is no fluid shift.
What causes intracellular fluid and extra cellular fluid to not have a fluid shift?
When they have the same concentration meaning they are isotonic to each other
What does it mean when intracellular fluids and extracellular fluids don’t have a fluid shift?
They are isotonic to each other
If a fluid has decreased solute and increased water it is a what?
It is a hypotonic fluid
If a fluid has increased solute and decreased water is is what?
It is a hypertonic fluid
Between a hypotonic and hypertonic fluid which one will cause a fluid shift? And why?
They both will because water moves towards higher solute.
If the ECF is hypotonic to ICF; the fluid will shift out of the cell and cause what?
Shriveling or crenation.
What is crenation and what causes it?
It is the shriveling of the cell from fluid shifting from hypertonic to hypotonic fluid
What does the carrier meditated transport use for transport?
It uses membrane proteins specific for the substance being transported
What is Carrier meditated transport regulated by?
Hormones or ions
What does the rate of carrier meditated transport depend on
The number of active carrier proteins
What is saturation?
Maximum rate of active carrier proteins
What is facilitated diffusion
High concentration to low concentration
