cellular transport
_ _ _ is the molecule that provides the energy for active transport
ATP
When molecules move DOWN the concentration gradient it means they are moving from
An area of high concentration to an area of lower concentration
_ _ _ _ _ _ _ _ _ _ moves oxygen and carbon dioxide molecules from a high concentration to a low concentration across membranes
Diffusion
A solution in which there is a higher concentration of molecules outside the cell than inside =
Hypertonic
The SWELLING and BURSTING of animal cells when water enters occurs when a cell is placed in what kind of solution?
Hypotonic
a solution in which the concentration of molecules outside the cell is lower than inside =
Hypotonic
hypotonic solution def.
If a cell is in a solution that has a lower concentration of solute
the cell organelles that burns glucose and provides ATP for active transport are the _ _ _ _ _ _ _ _ _ _ _
Mitochondria
___ uses ATP to move three Na* ions out of a cell while it moves two k* ions in
Pump energy
What happens when a cell is placed in a hypotonic solution
The SWELLING and BURSTING of animal cells when water enters
Active transport def.
The movement of substances across the plasma membrane against a concentration gradient and requires energy
Exocytosis def.
The secretion of materials at the plasma membrane
If the solute in this diagram is unable to pass through the dividing membrane, what will happen ?
The water level will rise on the right side of the tube
Facilitated diffusion def.
Uses transport proteins to move other ions and small molecules across the plasma membrane
Hypertonic definition
When there is a GREATER concentration of solute molecules OUTSIDE the cell than inside
Hypotonic definition
When there is a LOWER concentration of solute molecules OUTSIDE the cell than inside
dynamic equilibrium def.
Where there is continuous movement but no overall change
Pinocytosis, phagocytosis, and Na*-K* pumps are all kinds of ____ transport because they use energy to move substances across membranes
active
a ________ protein is an integral membrane protein that helps move molecules across a cell membrane, like a revolving door
carrier
when water leaves a plant cell, the osmotic pressure will?
decrease
When molecules move from high to low along a concentration gradient we say they are moving "______" the gradient
down
active transport requires _ _ _ _ _ to move molecules across membranes
energy
during _______ diffusion carries proteins grad glucose molecules, change shape, and flip to the other side of the membrane, like a revolting door
facilitated
a concentration _____ forms whenever there is a difference in concentration between on place and another
gradient
Placing plant cells in a HYPOTONIC solution causes there osmotic pressure to ______
increase
a cell placed in an _____ solution neither swells or shrinks because the concentration of molecules outside the cell is the same as inside
isotonic
Placing an animal cell in a hypotonic solution will cause water to?
move into the cell
water moves across the membrane by
osmosis
________ pressure is used by water inside a plant cell pushing against the cell wall
osmotic
______ transport does not require energy
passive
kind of endocytosis that takes in small dissolved molecules (solutes) or fluids =
pinocytosis
endocytosis def.
process by which a cell surrounds a substance in the outside environment, enclosing the cell to a portion of the plasma membrane
osmosis def.
the diffusion of water across a selectively permeable membrane
diffusion def.
the net movement of particles form an area where ether are many particles of the substance to an area where there are fewer particles of the substance
isotonic solution def.
when a cell is in a solution that has the same concentration of water and solutes-ions, sugars, proteins,and other substances-as its cytoplasm
hypertonic solution def.
when the concentration of the solute outside of the cell is higher than inside
Isotonic definition
when there is the SAME concentration of solute molecules outside the cell as inside
