AP Biology / Unit 2: Cell Structure and Function
2.9 Cell Compartmentalization
Notes
Membrane-bound organelles keep different reactions apart and increase surface area for reactions.
- Lysosomes keep digestive enzymes separate from the cytosol.
- Mitochondrial and chloroplast membranes hold gradients.
Practice
A benefit of compartments:
Specialized environments.
Lysosome enzymes work best at low pH. Keeping them inside lysosomes:
Containment and conditions.
Prokaryotes lack:
No nucleus or organelles.
Ready for more? Take the Unit 2 test.