Lecture 19 Flashcards
What is osmolarity
the total solute concentration
osmotic pressure is
the want of water to be equal on both sides
what does osmotic pressure do for osmolarity
osmotic pressure drives osmolarity
what do globular proteins do
contribute to osmolarity
residues of globular proteins
hydrophobic residues inside, hydrophilic residues outside
isotonic solution
equal concentration
hypertonic
environment has higher solute concentration (shrivled cell)
hypotonic
cell has a higher solute concentration (cell bursts)
what do ionic solutes need
disequilibrium
What does the Na+/K+ pump maintain
dis-equilibrium
what type of pump is the Na+/K+ pump
antiporter; push Na+ out of cell K+ in to cell
Ratio of Na+/K+
High Na+ out and High K+ in
Active Transport functions
uptake of nutrients
secreting of products and wastes
maintaining dis-equilibrium
Active transport pumps
ATPases
What does ATPases do
break high-energy phosphate bonds (ATP) allowing work
