Membrane_Transport2 - Membrane Transport 1. Membrane...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Membrane Transport 1. Membrane Permeability 2. Membrane Transport proteins A. carriers B. channels 1. Membrane Transport mechanisms A. Passive diffusion facilitated B. Active Examples A. Glucose transporter B. Na+/K+ ATPase C. ABC Transporter Family
Background image of page 1

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

View Full DocumentRight Arrow Icon
Membrane Transport Due to the hydrophobic interior, the lipid bilayer serves as a barrier to polar molecules Barrier function of membranes important in that it allows for cells to maintain solute concentration in cytosol that is different from extracellular fluid 15-30% of all genes code for membrane proteins in cell Membrane organization contributes to its permeability
Background image of page 2
As a result: Non polar molecules cross membrane easily Polar molecules: small uncharged - if small enough large polar - not easily all ions - no
Background image of page 3

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

View Full DocumentRight Arrow Icon
Molecules must be transported by proteins Integral membrane proteins serve this purpose Two types of membrane transport proteins: Carriers (active or passive) Channels (passive)
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/06/2011 for the course BIO 411 taught by Professor Nancya.rice during the Fall '09 term at Western Kentucky University.

Page1 / 16

Membrane_Transport2 - Membrane Transport 1. Membrane...

This preview shows document pages 1 - 5. Sign up to view the full document.

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