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Membrane TransportMembrane TransportSlide ShowSlide Show

Copyright © 2008 Pearson Education, Inc.

Small intestine

Interior of small intestine

Surface of intestinal cell

Plasma membrane

Membrane proteins

Molecules outside cell

Plasma membrane

Inside cell

Outside cell

Membrane proteins

Passive Transport

Plasma membrane (lipid bilayer)

Lipids

Plasma membrane

Fructose

Transport protein

Plasma membrane

Transport protein

Water molecules

Active Transport

Plasma membrane

ATP Potassium ions

Sodium-potassium pump Sodium ions

Plasma membrane

Cotransporter protein Sodium ionsGlucose

Exocytosisand

Endocytosis

Plasma membrane

Vesicle Cytoskeleton

Plasma membrane

Contents of vesicle

Outside of cell

Pinching in ofplasma membrane

Outside of cell

Plasma membrane

VesicleCytoskeleton

Material from outside the cell

Plasma membrane

Carbon dioxide

Oxygen

Copyright © 2008 Pearson Education, Inc.