Formation of filtrate depends on a?

Question

A. pressure gradient
B concentration gradient
C. volume gradient
D. temp. gradient
E. osmotic gradient

Plasma contains a much greater concentration of ___ then the glomerular filtrate
A. urea
B. water
C. protein
D. sodium ions
E. glucose

Answer 1

In the glomerulus of the nephron, it is the high pressure of the blood entering that makes the driving force moving fluid to the nephron, so the answer to #1 is A. The original filtrate contains everything in the blood in essentially the same concentration, except that cells and large proteins cannot fit through, so the answer to #2 is C.