Plasma Membrane - Two Basic Types of Cells Plasma Membrane...

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

View Full Document Right Arrow Icon
Two Basic Types of Cells Plasma Membrane * Composed of two parallel rows of phospholipids called a phospholipid bilayer. * Contains two types of membrane proteins * integral- penetrate through the membrane * form channels that have pores through which certain substances move in and out of the cell. * transporters (carriers) that move substances from one side of the membrane to the other. * Receptors (recognition sites) which identify and attach various molecules (i.e. hormones, antibodies. . etc.). * cell identity markers-glycoproteins and glycolipids that enable the cell to recognize self and foreign. * peripheral - loosely attached to the exterior or interior surface of the membrane Functions of the Plasma Membrane * Shape and protection Functions of the Plasma Membrane * Communication- occurs via receptors and second messengers * Enzymes in the membrane break down signaling molecules to halt action Signal Transduction Pathway (Second Messenger) Functions of the Plasma Membrane * Maintains the electrochemical Gradient
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 01/29/2012 for the course SCIE SYG2000 taught by Professor Bernhardt during the Fall '10 term at Broward College.

Page1 / 2

Plasma Membrane - Two Basic Types of Cells Plasma Membrane...

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