Rough ER; Golgi apparatus; vesicle; plasma membrane
Golgi Apparatus; rough ER; lysosome
Lysosome; vesicle; plasma membrane
Plasma membrane; cloated vesicle; lysosome
Rough ER; cytoplasm; plasma membrane
The cell membrane to the vesicles
The Golgi apparatus to the cell membrane
The smooth ER to the rough ER
Coated pits to the inside of the cell.
The nuclear envelope directly to the cell membrane.
Desmosomes and gap junctions contain keratin, whereas tight junctions have collagen.
Gap junctions and tight junctions have specialized protein channels called connexons; desmosomes do not.
Tight juctions and desmosomes have mechanical roles, whereas gap junctions facilitate communication between cells.
Desmosomes and gap junctions are found in epithelial tissue, whereas tight junctions are found in nerve cells.
They all have different functions; however, their structure is the same.
Temperature of the solution
Electrical charge of the diffusing material
Presence of other substances in the solution
Molecular diameter of the diffusing material
High concentration of dissolved material; low concentration of dissolved material
Low concentration of dissolved material; high concentration of dissolved material
Hypertonic solution; hypotonic solution
Negative osmotic potential; positive osmotic potential
Low concentration of water; high concentration of water
A common amino acid
Do not change.
Swell but not burst because of the cell wall.
The cell will shrivel.
The cell will swell and burst.
The cell will shrivel and then return to normal.
The cell will swell and then return to normal.
Water moves into and out of the cell at an equal rate, but there is no net change.
Ability of the ion to let go of its water
Concentration gradient and elec trochemical imbalances
Number of channel proteins present.
Size and charge of the ion.
Presence of specific stimuli to open gated channel proteins.
A charge imbalance across the plasma membrane.
The difference in ion concentrations on either side of hte plasma membrane.
The difference in ATP concentration son either side of hte plasma membrane.
The capacity for active transport.
The ability of macromolecules to recognize and adhere to one another.
Facilitated diffusion requires the use of ATP.
As the concentration difference increases, molecules interfere with one another.
The carrier proteins are saturated.
The transport protein must be of the channel type
The diffusion constant depends on the concentration difference.
In the same direction as diffusion moves them.
In the opposite direction in which diffusion moves them.
In a direction that tends to bring about equilibrium.
Toward higher pH.
Toward higher osmotic potential.
An exchange channel.
Two Na+ ions are imported and three K+ ions are exported.
Two Na+ ions are imported and one K+ ion is exported
One K+ ion is imported and three Na+ ions are exported
Two K+ ions are imported and three Na+ ions are exported
Three K+ ions are imported and two Na+ ions are exported.
Never requires direct input of ATP.
Moves molecules with a concentration gradient.
Both a and c
Require the use of proteins as carriers
Carry solutes in only one direction
Increase without limit as the concentration gradient increases.
Depend on the solubility of the solute in lipids.
Tight junctions; plasma membrane
Tight junctions; plasmodesmata
Gap junctions; plasma membrane
Gap junctions; plasmosdesmata
Allows small molecules to enter cells.
Results in the formation of clathrin-coated vesicles.
Directly involves the Golgi apparatus.
Is anothher name for phagocytosis.
Endergonic; exergonic; an increase
Endergonic; exergonic; a decrease
Exergonic; endergonic; no charge
Exergonic; endergonic; an increase
Endergonic; exergonic; no change
Electric charge imbalance
Both a and b
All of the above
Being converted to free energy
Being converted to matter