Download Facilitated Diffusion vs. Active Transport

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Biochemistry wikipedia, lookup

List of types of proteins wikipedia, lookup

Cell-penetrating peptide wikipedia, lookup

Protein adsorption wikipedia, lookup

Protein wikipedia, lookup

Electrophysiology wikipedia, lookup

Endomembrane system wikipedia, lookup

Metabolism wikipedia, lookup

QPNC-PAGE wikipedia, lookup

Vectors in gene therapy wikipedia, lookup

Oxidative phosphorylation wikipedia, lookup

Magnesium transporter wikipedia, lookup

Western blot wikipedia, lookup

Gene regulatory network wikipedia, lookup

Cell membrane wikipedia, lookup

Thylakoid wikipedia, lookup

Transcript
Facilitated Diffusion vs.
Active Transport
Facilitated Diffusion
• Particles always move
with (down) a
concentration gradient.
• Uses transport/channel
proteins.
• Passive transport.
• Usually for specific
molecules such as
glucose.
• Facilitated diffusion stops
at equilibrium.
Active transport
• Active Transport: requires energy in the
form of ATP.
– Capable of moving solute particles against the
conc. gradient (from low conc. to high conc.)
– Uses transport/carrier proteins (protein
pumps) embedded in the plasma membrane.
– Carrier proteins are specific for the molecules
that they allow through. The carrier protein
changes shape which requires energy (ATP).
Active Transport against the
concentration gradient
Active Transport
• Endocytosis: a process of taking material
into the cell by means of infoldings, or
pockets, of the cell membrane (usually
putting them into a vacuole).
– Phagocytosis -“Cell eating”
• Nonspecific molecules
• Intake of solids
– Pinocytosis –”Cell Drinking”
• Nonspecific molecules
• Intake of small droplets of liquid
Active Transport
• Exocytosis (reverse endocytosis): a
process in which the membrane of the
vacuole surrounding the material fuses
with the cell membrane, forcing the
contents out of the cell.
EXO and ENDO