Name:
Date:
Block:
MY NOTES:
CELL MEMBRANE & TRANSPORT
Standards: SB1a. Explain the role of cell organelles for both prokaryotic and eukaryotic
cells, including the cell membrane, in maintaining homeostasis and cell reproduction.
SB1d Explain the impact of water on life processes
Cell Membrane Functions
What is the cell membrane and what does it do?
The cell membrane is selectively permeable. What does this mean?
Cell Membrane Diagrams
Phospholipid Bilayer
Are the phospholipid heads hydrophilic or hydrophobic? What about the tails?
Where do the heads point? Tails?
What is found in between the lipid portion of the bilayer?
What does the fluid mosaic model mean?
Proteins
What are the two different types of proteins? Where are they found?
CELL TRANSPORT
Passive Transport
What is passive transport? Is energy required? Why or why not?
1. Diffusion
What is diffusion? What size molecules does it address? How do they enter or
leave the cell?
2. Osmosis
What is osmosis the diffusion of? What is the concentration flow?
3. Facilitated Diffusion
How is facilitated diffusion different from diffusion? Give an example of a
molecule that needs facilitated diffusion.
Active Transport
What is active transport? What is the concentration flow? Does it require
energy?
Types:
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1. Protein Gates
What are protein gates? What’s their purpose?
2. Endocytosis
What happens during endocytosis?
3. Exocytosis
What happens during exocyctosis?
ISOTONIC, HYPERTONIC, HYPOTONIC
What is an isotonic solution?
What is a hypertonic solution?
What is a hypotonic solution?
Summarizing my learning:
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