Chapter 8 Membrane Structure and Function

Chapter 8 Membrane Structure and Function - Chapter 8...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 8 Membrane Structure and Function Lecture Outline Overview: Life at the Edge The plasma membrane separates the living cell from its nonliving surroundings. This thin barrier, 8 nm thick, controls traffic into and out of the cell. Like all biological membranes, the plasma membrane is  selectively permeable, allowing some substances to cross more easily than others. Concept 8.1 Cellular membranes are fluid mosaics of lipids and proteins The main macromolecules in membranes are lipids and proteins, but carbohydrates  are also important. The most abundant lipids are phospholipids. Phospholipids and most other membrane constituents are  amphipathic molecules. Amphipathic molecules have both hydrophobic regions and hydrophilic regions. The arrangement of phospholipids and proteins in biological membranes is described  by the  fluid mosaic model. Membrane models have evolved to fit new data.
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/04/2012 for the course BSC BSC1005 taught by Professor Orlando,rebecca during the Fall '10 term at Broward College.

Page1 / 2

Chapter 8 Membrane Structure and Function - Chapter 8...

This preview shows document pages 1 - 2. Sign up to view the full document.

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