Transport
VOCAB ONLY
http://bio.winona.edu/berg/ANIMTNS/Directry.htm
An INTEGRAL MEMBRANE PROTEIN that moves
molecules PASSIVELY across cell membranes by
attaching, CHANGING SHAPE, and flipping to the
other side like a revolving door
Carrier protein
A state that exists when the
CONCENTRATION of a substance
IS THE SAME throughout a space
equilibrium
Kind of endocytosis used to take
in large particles or whole cells.
phagocytosis
The DIFFUSION of WATER across a
semi-permeable MEMBRANE
osmosis
The pressure of water pushing against the
cell wall in a plant cell is called
________________
pressure.
osmotic
LABEL THE DIAGRAMS:
HYPERTONIC
ISOTONIC
HYPOTONIC
Solution in which the
solute concentration outside
the cell is LESS than inside
hypotonic
Movement of molecules ACROSS a cell
membrane from an area of LOWER
concentration to HIGHER concentration
using ENERGY
Active transport
The swelling and bursting of an animal cell when
placed in a HYPOTONIC solution
cytolysis
An INTEGRAL MEMBRANE PROTEIN
that provides a passageway/tunnel
across the cell membrane through
which WATER molecules can
diffuse PASSIVELY during osmosis
Aquaporins
http://www.spps.kvl.dk/news/0507/Lund4.jpg
Solution in which the
solute concentration outside
the cell is greater than inside
hypertonic
Molecule used by cells to provide
energy for active transport
ATP
Solution in which the
solute concentration outside
and inside a cell are EQUAL
isotonic
Kind of active transport that can
move sodium and potassium ions
quickly AGAINST the
concentration gradient
Sodium-potassium pump
A process in which the cell
membrane surrounds and engulfs
substances and pulls them into the cell
endocytosis
An INTEGRAL MEMBRANE PROTEIN
that provides a passageway/tunnel across
the cell membrane through which IONS
can diffuse PASSIVELY
Ion channel
A membrane that
lets certain
molecules pass
through and not
others is called
_______________
Semi-permeable OR
selectively permeable
Image from: http://www.d.umn.edu/~sdowning/Membranes/membraneImages/jpegimages/diffusionmedium.jpg
A process in which a VESICLE inside a
cell fuses with the cell membrane and
releases its contents OUTSIDE the cell
EXOCYTOSIS
http://www.estrellamountain.edu/faculty/farabee/biobk/BioBooktransp.html
Substance that turns blue-black when it
reacts with starch
iodine
___________
Passive transport does NOT
require energy to move molecules
across membranes.
The process by which molecules MOVE
from an area of HIGHER concentration
to an area of LOWER concentration
diffusion
http://www.estrellamountain.edu/faculty/farabee/biobk/BioBooktransp.html
The shrinking away of the cell membrane from
the cell wall in a plant cell when placed in a
HYPERTONIC environment
plasmolysis
Organelle that uses exocytosis to
transport molecules out of the cell
Golgi (body) apparatus
A small membrane bound sac in a
eukaryotic cell used to transport
substances around within a cell or
during exocytosis or endocytosis
vesicle
The shrinking of animal cells when placed
in a hypertonic solution is called
crenation
______________
Organelle that makes the ATP used to
run active transport?
mitochondria
Type of endocytosis in which cells
take in small molecules or fluids
pinocytosis
mass of a dissolved
substance in a given
volume concentration
Image by Riedell
The difference in the concentration
of molecules across a space
Concentration gradient
Solution in which the
solute concentration outside
and inside the cell is equal
isotonic
A MEMBRANE PROTEIN that uses energy to
ACTIVELY transport hydrogen ions (H+)
across a cell membrane
PROTON PUMP
Process that REQUIRES ENERGY to move molecules
across a cell membrane against a concentration
gradient (moves molecules from lower
concentration → higher concentration)
Active transport
Movement of specific molecules across cell
membranes with the help of protein
channels and carriers
Facilitated
diffusion
Animations from:
http://bio.winona.edu/berg/ANIMTNS/facdifan.gif
http://www2.uic.edu/~myilma1/ionchannel.gif