9 Transport part 2 (PDF)

File information

Title: Cell Structure and Function
Author: Technology Education

This PDF 1.5 document has been generated by Microsoft® Office PowerPoint® 2007, and has been sent on pdf-archive.com on 13/09/2011 at 23:46, from IP address 24.172.x.x. The current document download page has been viewed 1137 times.
File size: 1.25 MB (12 pages).
Privacy: public file

File preview

Movements Across
Plasma Membranes


Molecular MovementsIn and Out of Cells

2 Types:
1. Transports that do not require energy
2. Transports that require energy

Transports That Do Not Require Energy:
Passive Transport

Does not require input of energy
Molecules pass through membrane
from an area of high concentration to
an area of low concentration
2 Types:

Simple Diffusion

Facilitated Diffusion

1. Simple Diffusion

Small molecules pass through the
phospholipid bilayer
No energy needed
Movement: high concentration to low
Examples: CO2,
O2, H20

2. Facilitated Diffusion

Molecules pass through a transport
No energy needed
Movement: high concentration to low
facilitated diffusion
Example: Glucose

Energy Requiring Transport

Molecules move from an
area of low concentration
to an area of high
“against the gradient”
3 Types:

Active Transport



1. Active Transport

Carrier protein in membrane attaches
to a specific molecule
Carrier protein changes shape as
molecules crosses the membrane
Energy is required
K ,Na ions

Download 9 Transport part 2

9 Transport part 2.pdf (PDF, 1.25 MB)

Download PDF

Share this file on social networks


Link to this page

Permanent link

Use the permanent link to the download page to share your document on Facebook, Twitter, LinkedIn, or directly with a contact by e-Mail, Messenger, Whatsapp, Line..

Short link

Use the short link to share your document on Twitter or by text message (SMS)


Copy the following HTML code to share your document on a Website or Blog

QR Code to this page

QR Code link to PDF file 9 Transport part 2.pdf

This file has been shared publicly by a user of PDF Archive.
Document ID: 0000033668.
Report illicit content