Transcript
No energy is used[High] [Low] (it’s the natural flow)
This means it goes down a concentration gradient
Protein PumpsProtein Pumps: proteins use energy to pull or pump
materials into or out of the cell to stockpile or store substances the cell needs
Different Types of Membrane Proteins (page 126)
signal/recognition
Enzymes
receptor
transporter
2.
3.
4.
5.
• When a particle is engulfed into the cell.• 2 types
1. Phagocytosis: When a cell wraps part of its membrane arounda large particle forming a “pocket” or vesicle
2. Pinocytosis: The same process, but with smaller particles or liquids
Endocytosis