Unit 2 Cells
- 2.1 Cell Structure and Function
Ribosome · Endomembrane system · Endoplasmic reticulum (ER) · Golgi complex · Mitochondrion · Lysosome · Vacuole · Chloroplast
- 2.2 Cell Size
Surface area-to-volume ratio (SA/V) · Plasma membrane as an exchange surface
- 2.3 Plasma Membrane
Phospholipid · Embedded membrane protein · Fluid mosaic model
- 2.4 Membrane Permeability
Plasma membrane as a boundary · Small nonpolar molecules · Small polar, uncharged molecules · Cell wall
- 2.5 Membrane Transport
Concentration gradient · Passive transport · Active transport · Endocytosis
- 2.6 Facilitated Diffusion
Facilitated diffusion · Transport (carrier) protein · Aquaporin
- 2.7 Tonicity and Osmoregulation
Hypertonic, hypotonic and isotonic · Growth and homeostasis depend on membrane transport · Solute potential (ψS)
- 2.8 Mechanisms of Transport
Active transport
- 2.9 Cell Compartmentalization
Compartmentalization · Minimizing competing interactions
- 2.10 Origins of Cell Compartmentalization
Endosymbiosis (origin of mitochondria and chloroplasts) · Prokaryotic cell · Internal membranes of eukaryotic cells