powerpoint 3 Flashcards
What kind of charge does an ion have?
an electrical charge
What is a valance?
+ or -
What is a cation?
A positively charge ion
What is an anion?
A negatively charged ion
What are cations attracted to?
Anions
What is ionization?
Dissociation of compounds into their perspective ions
what can a free standing ion do?
combine with other substances to form acids, bases, or salts
What does the body require for proper functioning?
all electrolytes
what are the organs involved in homeostatic actions to maintain electrolyte balance?
kidneys, adrenal glands, parathyroid and thyroid glands
What is permeability?
ability to allow molecules to pass thru membrane
What is the capillary membrane?
freely permeable
What is the cellular membrane?
Selectively permeable
What is not required for passive transport?
Energy
What is required for active transport?
energy
What does active transport include?
diffusion, osmosis and filtration
When is active transport used?
When molecules are too large or too specialized to pass thru the membrane without assistance
What is diffusion?
Random movement of molecules from an area of high concentration to an area of low concentration
What is osmosis?
H2o diffusion over semi-permeable membranes.
In Osmosis H2o moves passively from an area of what to what
area of low concentration to an area of high concentration
What is filtration?
Transport of solvents and dissolved solutes thrus a membrane from an area of high concentration to an area of low pressure
What does active transport require?
Energy
What is sooooo necessary for homeostatis?
balance
