Download 1. What does it mean to be a selective person? 2. Which organelle

Bellwork
1. What does it mean to be a
selective person?
2. Which organelle protects a
cell from its environment?
3. Which type of macromolecule
is oil?
http://www.wisegeek.org/what-is-membrane-permeability.htm
Cell membranes have
selective permeability.
http://battleoftheorganelles.blogspot.com/2013/10/the-celebratory-cell-membrane-cause-its.html
Cell membranes are
selective permeability
= allow certain materials to
pass through.
Selective permeability
http://blog.sciencenet.cn/blog-355217-692895.html
Selective permeability
http://youtu.be/Pt4Ch-YW-xs
The cell
membrane is
made up of
many
phospholipids.
http://ourphysiologygroup.wikispaces.com/03+Cells+Interaction+with+Environment
Cell membranes are
selectively permeable.
http://ourphysiologygroup.wikispaces.com/03+Cells+Interaction+with+Environment
http://www.biology4kids.com/files/cell_membrane.html
What do you know
about oil and water?
hydrophobic
hydrophilic
hydrophobic - hates water
hydrophilic - likes water
Cell Membrane
The cell membrane is made up of tiny pieces called
phospholipids.
phospholipids look like this
-
-
The cell membrane also has proteins
in it that allow materials to go in and out
of the cell.
membrane proteins look like this.
membrane proteins
or this...
Class Cell Membrane Model
Today, we will be making a model of the cell membrane
including:
phospholipids
membrane proteins
Class Cell Membrane Model
Every group of will make:
10 phospholipids
3 membrane proteins
Use page 204 of your textbook.
Phospholipid - label 2 of them