plasma_membrane

plasma_membrane - ThePlasmaMembrane andHomeostasis Balance...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
The Plasma Membrane  and Homeostasis
Background image of page 1

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

View Full DocumentRight Arrow Icon
Homeostasis – Maintaining a  Balance Cells must keep the proper  concentration of nutrients and  water and eliminate wastes. The plasma membrane is  selectively permeable – it will allow  some things to pass through, while  blocking other things.
Background image of page 2
Structure of the Plasma  Membrane Lipid bilayer – two sheets of lipids  (phospholipids). Found around the cell, the nucleus,  vacuoles, mitochondria, and  chloroplasts. Embedded with proteins and  strengthened with cholesterol  molecules.
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’s a Phospholipid? It’s a pair of fatty acid chains and a  phosphate group attached to a glycerol  backbone. Polar (water-soluble) heads face out  and the nonpolar fatty acids hang  inside.
Background image of page 4
Membrane Proteins 1.  Determine what particles can pass  through the membrane. 2.  Serve as enzymes (may speed 
Background image of page 5

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

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/13/2011 for the course BIO 100 taught by Professor Robinson during the Winter '08 term at BYU.

Page1 / 13

plasma_membrane - ThePlasmaMembrane andHomeostasis Balance...

This preview shows document pages 1 - 6. Sign up to view the full document.

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