Transport Across Membrane Flashcards
There is a large concentration of what in the cell?
K+ ions
How does K+ transport across cells?
Via Passive Transport
Diffusion is the act of
Solutes going from higher to lower concentration
Osmosis is when
Water moves from high to lower solute concentration
What does the Sodium Potassium Pump out of the cell?
Na
What does the Sodium Potassium Pump in the cell?
K+
What does the Sodium Potassium Pump use?
Active transport
Symport is a form of
2˚ Active Transport
What is hydrostatic pressure?
The pressure a liquid exerts on its container
Hydrostatic pressure displays the
Volume of liquid in a space
What is osmotic pressure?
The pressure required to prevent movement across a semipermeable membrane
Osmotic pressure displays the
Protein content of the blood
What sort of transporter is the sodium / glucose transporter?
A symporter which moves glucose against its gradient
What cell membrane property in the nephron capillaries allows small molecules to pass through?
It is fenestrated
Equilibrium rate depends on
Kinetic energy
What would slow the equilibrium of a solute?
Lowering the temperature, decreasing Kinetic energy
The inside of a cell is
More negative than the outside of the cell
How do potassium ions travel as they move into the cell?
- Up the concentration gradient
- Down the membrane potential
