anatomy and physiology

I need help with these couple questions!!!

 3.) I.) signal molecule
     II.) G-protein activation
    III.) second messenger generated
     IV.) effector protein activated
       V.) kinase activated
      VI.) physiological response
The correct sequence of events is:
a) I, II, III, IV, V, VI
b) I, II, V, IV, III, VI
c) I, II, IV, III, V, VI
d) I, II, III, V, IV, VI


and this problem...
A patient is admitted to the hospital suffering from renal calculi (kidney stones) brought about by the precipitation of high concentrations of Ca^2+ and PO4^-3. Which of the following may be the cause?
a) serum PTH is too high and/ or serum calcitonin is too low
b) serum PTH is too low and /or serum calcitonin is too high
c) serum PTH and calcitonin levels are both too high
d) serum PTH and calcitonin levels are both too low

and the last problem is ....
Patients suffering from hypoparathyroidism would be expected to exhibit:
a) impaired vitamin D absorption by the small intestines
b) low blood Ca^2+ levels
c) low levels of thyroid hormone in the blood
d) high osteoblast activity
e) a and c
f) c and d



THANK YOU!!!