Advertisement Upgrade to remove ads

vocab for the "The Cell" unit in biology.

endo-

within

exo-

outside of

hyper-

above, beyond, over

hypo-

beneath, under, less

-lysis

dissolve, decompose

active transport

movement of chemicals, usually across the cell membrane, against a concentration gradient; requires cells to use energy

concentration gradient

a difference in the concentration of a substance across a distance

contractile vacuole

in protists, an organelle that accumulates water and then releases it periodically to maintain osmotic pressure (osmosis ☺)

cytolysis

the bursting of a cell

diffusion

the movement of particles from high density to low density areas

endocytosis

the process by which a cell membrane surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell

exocytosis

the process by which a substance is released from a cell through a vesicle that transports the substance to the cell surface and then fuses with the membrane to let the substance out

equilibrium

a state when the concentration of a substance is the same throughout

facilitated diffusion

the transport of substances through the cell membrane along a concentration gradient with the aid of carrier proteins

hypertonic

describes a solution whose solute concentration is higher than the solute concentration inside the cell

hypotonic

describes a solution whose solute concentration is lower than the solute concentration inside the cell

isotonic

describes a solution whose solute concentration is equal to the solute concentration inside the cell

osmosis

the diffusion of water or another solvent from a more dilute solution to a more concentrated solution (through a membrane that is permeable to the solvent)

passive transport

the movement of substances across a cell membrane without the use of energy by the cell

phagocytosis

the process by which a cell engulfs large particles or whole cells, either as a defense mechanism or as a means to obtain food

pinocytosis

a method of active transport across the cell membrane in which the cell takes in extra fluids

plasmolysis

the contraction of a plant cell membrane in a hypertonic solution in response to the loss of water by osmosis

sodium - potassium pump

a carrier protein that uses ATP to actively transport sodium ions out of a cell and potassium ions out of the cell

turgor pressure

the pressure that is exerted on the inside of cell walls and that is caused by the movement of water into the cell

vesicle

a small cavity that contains materials in a eukaryotic cell; forms when part of the cell membrane surrounds the materials to be taken into the cell or transported within the cell

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set