L3-Membranes - BIO320 - 2009S LECTURE 3 Properties and...

Info iconThis preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
BIO320 - 2009S LECTURE 3 Properties and Makeup of Membranes
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Typical Eukaryotic Cell
Background image of page 2
Basic Functions of Biological Membranes • Protective Physical Barrier • Selective Chemical Barrier • Encapsulates Specialized Compartments • Unique Reaction Substrate • Support 2D Diffusion 
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
What are membranes made of? Karp 4.4 Lipid…………And Proteins………
Background image of page 4
Lipids of the membrane Lipids: 1 . Phospholipid A. Phosphoglyceride B. Sphingolipid 2. Glycolipid 3. Cholesterol (a steroid) All are amphipathic
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Phospholipids: Bilayer arrangement in membranes Alberts 2-22 How is a phospholipid amphipathic?
Background image of page 6
Abundant Phospholipids Within The Membranes of Animal Cells Phosphoglycerides Sphingolipid Slide 11 10.3
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
What are membranes made of? Lipid: 1. Phospholipid (most are) A. Phosphoglyceride B. Sphingolipid 2. Glycolipid 3. Cholesterol: interferes with fatty acid tails to modulate fluidity. Can be 50% of mb.
Background image of page 8
Cholesterol: Important Constituent of Biological Membranes Alberts 10-4
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Membranes are fluid Fluidity is affected by: Temperature Phospholipid composition Concentration of Cholesterol
Background image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 07/22/2009 for the course BIO 89545 taught by Professor De lozanne during the Spring '09 term at University of Texas at Austin.

Page1 / 27

L3-Membranes - BIO320 - 2009S LECTURE 3 Properties and...

This preview shows document pages 1 - 11. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online