Cell Ultrastructure

Table of Contents

Cell Ultrastructure

Membranes Are Selective Barriers

Membrane Barriers

Membrane Permeability

PPT Slide

Membrane Transport

Membrane proteins transfer small water soluble molecules across the membrane

Some compounds transported

Membrane Transport Proteins

Carrier Protein

Channel protein

Channel protein

PPT Slide

Concentration Gradients

Passive vs Active Transport

Some Examples of Carrier Proteins

Facilitated Diffusion of Glucose

Active Transport

Active Transport Mechanisms

H+ Pump - Active Export of H+ Out of Cell

Electrochemical Gradient

Coupled Transport

Na-K Pump

PPT Slide

Na-glucose Pump

PPT Slide

Channel protein

Channel Proteins

Ion Channels

Types of Gated Channels

Exocytosis & Endocytosis

Exocytosis

PPT Slide

Endocytosis

Endocytosis

Membrane Barrier

Email: estelle-levetin@utulsa.edu

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