lab 2: cells Flashcards
- size of cells, function of cells, and tissues and their functions
Definition: movement of molecules from HIGH CONCENTRATION to LOW CONCENTRATION
diffusion
Diffusion of WATER across a membrane (OUT OF CELL)
OSMOSIS
WHAT DOES OSMOSIS TO DO CELLS
cells SHRIVEL OR swell or burst
Mixture of solute (molecules) and solvent (water)
solution
what is a solute
molecules that DISSOLVE in solute
what is solute
water
define CRENATION
shrinking or shrilling of a cell
define hemolysis
BURSTING OF A RED BLOOD CELL
- hypertonic causes this
definition: the ability of a solution to prevent or promote osmosis
tonicity
definition: a solution with a HIGHER CONC. OF SOLUTE (molecules) than inside the cell.
Hypertonic ( diffusion occurs- moves OUT of cell)
definition: solution contains more solvent than solutes. (water). LOW CONC. on the outside of the cell. SOLVENT ENTERS THE CELL
HYPOTONIC
Definition: solutions have equal concentration from inside and outside to the cell.
isotonic
what is tissue
a group of cells
working together to perform a similar function
4 major tissues
Epithelial tissue
→ Connective Tissue
→ Muscle Tissue
→ Nervous Tissue
Simple squamous tissue
type: ET
Location: alveoli of lungs
function: filtration, diffusion, osmosis
