Aldosterone exerts effects on principal cells of the kidney by causing:

A. increased levels of cAMP and increases in the total number of Na+ channels.
B. decreased levels of cAMP and decreases in the number of open K+ channels.
C. increased numbers of Na+/K+ pumps. decreased numbers of Na+/K+ pumps.

Option C.

Increased numbers of Na+/K+ pumps. Decreased numbers of Na+/K+ pumps.

Explanation:

Aldosterone is a steroid hormone produced by the zona glomerulosa of the adrenal cortex.

It activates sodium and potassium channels in the principal cells of distal tubules, collecting ducts. It acts as electrolytes in the distal tubules. It increase sodium reabsorption from the urine, sweat and duct.

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.

for 8 am not sure maybe yes?

for 9 if it is asking if the male is more or less it would be less

hope i even just a little : )