Cell Ultrastructure

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Table of Contents

Cell Ultrastructure

Plasma membrane

Some Membrane Functions

Membrane Distribution

Prokaryotes and Eukaryotes

Membranes in a Eukaryotic Cell

Membrane composition

Fluid Mosaic Model

Membrane Lipids

Phospholipids

Lipid Bilayer

In water a phospholipid bilayer will form a closed spherical vesicle

Lipid Bilayer is Fluid

Cholesterol

Cholesterol and unsaturated FA prevent packing of phospholipids

Components of Model

Protein Properties

Integral Proteins

Various Protein Shapes

Examples of Plasma Membrane Proteins and Their Functions

Membrane Proteins

Membrane Proteins

Glycocalyx

Membrane Asymmetry

Membranes Are Selective Barriers

Membrane Barriers

Membrane Permeability

Kinetic Energy

Diffusion

Diffusion

Diffusion

Diffusion and Osmosis

Measuring Osmotic Pressure

Osmosis in Animal Cells

Osmosis in Animal Cells

Plant Cells

Author: Dr. Estelle Levetin

Email: estelle-levetin@utulsa.edu

Home Page: http://pollen.utulsa.edu