5. The Thyroid Gland needs what critical element below in order to make its hormone T3 or T4?

18. What are follicle cells?    

Write the net ionic equation for each reaction:Mg SO4(aq) + CaCl2(aq) → MgCl2(aq) + CaSO4(s)

3. This cell at tip of arrow #41 would most likely be a:   

2. This tissue indicated by #40 would have to be:     

What is the polarity of the bond between Na and F?

16. Marker #35 is on what ovary? (TIP – picture holding this model up to your own body,)   

If you use an external dry-erase board, please erase your notes on the board and show the clean board to the camera. 

Select the electron group geometry surrounding the nitrogen atom in ammonium, NH4+.

How many valence electrons are there in the ion NO3-?