1. Can you solve this puzzle?
RULES:
• You cannot turn the plastic bag inside out
• You cannot dump the glucose molecules through the
top of the plastic bag
• You cannot cut holes in the bag
• Glucose molecules must enter the cell through a solid
part of the bag
• Glucose must remain grouped together once it enters
the cell
• You are allowed to use your hands on the inside of the
bag.
• When your group feels like you have figured this
challenge out, raise your hand so Ms. Bengston can
check your solution!

2. Active Transport
•cell uses energy
•actively moves molecules to where they are needed
•Movement from an area of low concentration to an
area of high concentration
•(Low  High)
•Three Types:

3. Sodium Potassium
Types of Active Transport Pumps (Active
Transport using
proteins)
1. Protein Pumps -
transport proteins that
require energy to do work
•Example: Sodium /
Potassium Pumps are
important in nerve
responses. Protein changes shape
to move molecules:
this requires energy!

4. Types of Active Transport
• 2. Endocytosis: taking bulky
material into a cell
• Uses energy
• Cell membrane in-folds
around food particle
• “cell eating”
• forms food vacuole &
digests food
• This is how white blood
cells eat bacteria!

5. Types of Active Transport
3. Exocytosis: Forces material Endocytosis &
Exocytosis
out of cell in bulk animations
• membrane surrounding the
material fuses with cell
membrane
• Cell changes shape –
requires energy
• EX: Hormones or wastes
released from cell