facilitated diffusion
what is the difference between facilitated diffusion and diffusion
facilitated diffusion uses channels and diffusion does not
what is the goal of osmosis
to achieve equilibrium
what are the 3 types of tonicity
hypertonic, hypotonic, and isotonic
what type of substances easily diffuse across a cell membrane
non-polar hydrophobic substances
what animal did Mrs. Chase study
Bees
what type of substances require the assistance of a channel to pass through the cell membrane
hydrophilic poplar substances
osmosis only occurs in what kind of solution
an aqueous solution
what process occurs to maintain equilibrium
osmosis
1) what analogy was used for junction proteins?
2) what analogy was used for attachment proteins?
1) bridges
2) steel girder, anchors
what is the name of the protein channel used to diffuse water through certain cells
aquaporin
which direction does facilitated diffusion go (high to low concentration or low to high concentration)
high to low concentration
which direction does osmosis go
low solute concentration to high solute concentration
what type of tonicity is best for plant cells, explain why
what is the name of the model (the one we discussed in class)
fluid mosaic model
what type of transport allows the cell to reach homeostasis
all types of transport (passive transport, facilitated diffusion, osmosis, and active transport)
how do transport proteins contribute to a membrane’s selective permeability
by forming specific gates or channels for substances that could not cross the phospholipid bilayer
if a cell was in a hypertonic solution what will happen to the cell
the water will move out of the cell into the solution because there is more solute outside so the cell will shrink
1) what do cells do ina hypertonic solution?
2) what do cells do in a hypotonic solution
1) shrink
2) swell
yes or no
free points
Glucose needs to enter a red blood cell.
1) Is it polar or non-polar?
2)What process is used?
3) What specific membrane components are essential for it?
1) large polar molecule
2) facilitated diffusion
3) transport proteins (channels)
which of the following substances would require facilitated diffusion; amino acids, carbon dioxide, nitrogen, calcium, and water?
amino acids and calcium
***water would also require facilitated diffusion if aquaporins are not present
if there is more solute inside the cell than outside which way will the water move
inside the cell because there is more solute
1) what are the 3 names for how an animal cell would react to the different types of tonicity?
2) what are the 3 names for how a plant cell would react to the different types of tonicity?
1) lysed, normal, shriveled
2) turgid, flaccid, shriveled
what are ALL the names of the proteins we discussed in class
Transport proteins, enzymes, attachment protein, receptor proteins, junction proteins, and glycoproteins
DOUBLE JEOPARDY
*if your team gets it wrong you lose the points*
1) What school did Mrs. Chase go for her undergrad, what was her major?
2) What school did Mrs. Chase go for grad, what was her major?
1) UF, psychology
2) UF, entomology and hematology