Cell Membrane and Transport
Question/Topic
Cell membrane:
Structure
Notes
The cell membrane is a __________________________ structure surrounding the
_________________________, serving as a _________________ to the cell’s
environment.
Cell membrane:
Function
The cell membrane functions as
What does a Cell
need to
transport?
What does semipermeable mean?
1.
2.
3.
Definition:
4.
Example:
What can cross
the membrane?
The membrane only allows _____________________________________ to cross.
Examples that can cross:
Examples that cannot cross:
What is the
composition of
the cell
membrane?
The cell membrane consists of
What is a Fluid
Mosaic Model?
Membrane analogy:
Proteins are like ________________________, floating in the phospholipid
_________________.
Definition:
Labeled Picture:
How does a
Concentration
Gradient work?
Types of transport
Moves molecules
from:
Picture:
Draw a picture of the phospholipid bilayer:
1.
2.
Active :
Passive:
What is Passive
Transport:
Moves from
_______________
To
_______________
What is Active
Transport:
Moves from
Simple diffusion is when molecules _________________ until they are
____________________.
Facilitated diffusion is when ________________ in the
_________________________________
Pumps involve
Bulk Transport: Cells use energy to move large amounts of things into and out of
the cell by
______________
To
Endocytosis:
_______________
Exocytosis:
Review your notes:
1. What is the job of the cell membrane? __________________________________________________
2. What is the structure of the cell membrane? Draw a picture and describe.
3. What is allowed to freely cross the cell membrane? ________________________________________
What is not allowed to freely cross? _____________________________________________________
4. What is a concentration gradient in your own words?
5. What is the difference between active and passive transport?
6. What are the two kinds of active transport?
How are they different?
a. ________________________
b. ________________________
7. What are two kinds of passive transport?
a. _______________________
b. _______________________
How are they different?