1. You lined up all of the red blood cells in your body, they would reach all of the way around the equator, and then some
The average life span for a stomach cell is two days? A brain cell on the other hand, can live for a lifetime.
There are an estimated 1 billion neurons in the human brain
The largest and smallest cells in the human body are the gametes, or the sex cells. The female gamete, the oocyte (also known as the egg or the ovum), , which is just visible to the naked eye without the aid of a microscope or other magnification device.. The male gamete, the spermatozoan (also known as the sperm cell), is the smallest cell of the human body.
The Ostrich egg is the largest cell on Earth

2. Cellular Transport

3. Cell Diversity
Shape-reflects the function of the cell

4. Cell Diversity Size- most are 1/500 the size of a period
As the cell grows, volume increases faster than surface area.
Why is it important for the cell to remain small?
Hint: Think of materials needed & waste produced by the cell

5. Cell Transport Diffusion
Movement of molecules from an area of high concentration to low concentration.
Dynamic Equilibrium-when particles are evenly distributed
Concentration Gradient-difference in concentration

7. Cellular Transport Osmosis
Water molecules diffuse across a cell membrane
Hypotonic-water diffuses into the cell
Hypertonic-water diffuses out of the cell
Isotonic- remains the same

8. Osmosis

9. Hypertonic

10. Hypotonic

11. .

16. Endocytosis

17. Exocytosis