Youngless: Biology Cell Transport (Cell Environments)

selectively permeable

a property of cell membranes that allows some substances to pass through, while others cannot

passive transport (energy)

What type of transport Requires NO energy,

Passive transport (movement)

What type of transport moves molecules from high to low concentration, (Moves down the concentration gradient)

active transport (energy)

What type of transport requires Energy

Active Transport (movement)

What type of transport moves material across a cell membrane from low concentration to high concentration.( Moves against a concentration gradient)

Solute

the substance that is dissolved (sugar)

solvent

the substance in which the solute dissolves in (water)

solution

A mixture that forms when one substance dissolves another. (solute + solvent = ?)

concentration

A measurement of how much solute exists within a certain volume of solvent

concentration gradient

difference in the concentration of a substance from one location to another

diffusion

osmosis

facilitated diffusion

What are 3 types of Passive Transport.

O2 (oxygen) and CO2 (carbon dioxide)

What molecules can DIFFUSE through a cell membrane?

facilitated diffusion

Passive Transport. Movement of specific molecules (sugar/glucose) across cell membranes through protein channels. Move from high concentration to low concentration. Moves DOWN the concentration gradiant.

Sugar(glucose)

Salts (Ions)

What types of molecules use FACILITATED DIFFUSION to cross the cell membrane?

Osmosis

Passive Transport. Diffusion of water through a selectively permeable membrane. Moves from high concentration to low concentration. Moves DOWN the concentration gradiant.

Water

What type of molecule uses OSMOSIS to cross the cell membrane?

hypertonic solution

The water concentration INSIDE the cell is greater then OUTSIDE the cell.

(more solute outside then inside)

The cell shrinks/shrivels

What happens to the cell shape when placed in a hypertonic solution?

Water moves out of the cell

What will the water do in a hypertonic solution?

Move into the cell

Moves out of the cell

Equal amounts of water moves into and out of the cell (equilibrium)

hypotonic solution

The water concentration OUTSIDE the cell is greater than INSIDE the cell

(more solute inside the cell then outside the cell)

Water moves into the cell

What will the water do in a hypotonic solution?

Move into the cell

Moves out of the cell

Equal amounts of water moves into and out of the cell (equilibrium)

Cell swells

What happens to a cell shape in a hypotonic solution?

isotonic solution

The water concentration OUTSIDE the cell is EQUAL the water concentration INSIDE the cell

Equal amounts of water moves into and out of the cell (equilibrium)

What will the water do in a isotonic solution?

Move into the cell

Moves out of the cell

Equal amounts of water moves into and out of the cell (equilibrium)

Cell stays the same size

What happens to the cell shape in an isotonic solution?

Endocytosis

Exocytosis

Sodium - Potassium Pump (molecular pumps)

What are the 3 types of Active Transport?

Swells

What happens to a cell in a hypotonic solution?

Shrinks

What happens to a cell in a hypertonic solution?

Stays the same size

What happens to a cell in a isotonic solution

Hypotonic

What type of solution has more water outside the cell than inside the cell?

Hypeprtonic

What type of solution has more water inside the cell than outside the cell?

Isotonic

What type of solution has equal amounts of water inside and outside the cell?