BIO152H5 Lecture Notes - Lecture 4: Ice Crystals, Wood Frog, Endomembrane System
Document Summary
Extreme cold is better tolerated in some animals. Some animals can block ice crystal formation in their cells. Concept 6. 2: eukaryotic cells have internal membranes that compartmentalize their. The cell is the basic structural and functional unit of every organism. There are two types of cells: prokaryotic and eukaryotic. Two of the three domains of life (bacteria and archaea) are comprised entirely of prokaryotic cells. Protists, fungi, animals, and plants all are eukaryotic cells. Surface area to volume ratio of cells is critical. Metabolic requirements set upper limits on the size of cells. As a cell increases in size, its volume grows faster than its surface area: surface area increases by a factor of n2, volume increases by a factor of n3. Small cells have a greater surface area relative to volume. Concept 6. 4: the endomembrane system regulates protein traffic and perform. Components of endomembrane system: nuclear envelope, endoplasmic reticulum, golgi apparatus, lysosomes, vacuoles, plasma membrane.
