1. Active Transport: Endocytosis & Exocytosis
How do large molecules move in and out of our cells? How do single cell organisms “eat”?
Active Transport: Endocytosis & Exocytosis

2. How and where do vesicles form?

3. Animation:

4. How does the structure (Fluid Mosaic Model) of the membrane allow it to change shape, break and re-form during endocytosis and exocytosis?
Orientation of fatty acids (hydrophobic) and phosphate heads (hydrophillic) allow membrane to change shape because it is a fluid AND membrane can self-repair when vessicle buds off.

5. “exo” = out of, outside Excretion: Expulsion of waste materials
Secretion: Export of digestive enzymes or hormones

7. 3 Types of Endocytosis (“endo” = within, in)
Phagocytosis = cellular “eating”
Pinocytosis = cellular “drinking”
Receptor-mediated Endocytosis
Non-specific

8. Ex: Phagocytes/Monocytes/Neutrophils/T-lymphocytes
Ex: single-celled organisms

10. Ex: used by mammalian cells to import cholesterol

11. Rules for Challenge:
The candy must enter through a solid part of the bag (not through an opening already there)
The inside of the bag may not be directly open to the external environment.
The candies entering the bag must remain clustered together.
Students may work with their hands in the bag to act as the inside of the cell.
The candy may be eaten AFTER you show Alyssa your strategy.