Which of the following disorders results from a deficiency of factor viii?
a. sickle cell disease
b. christmas disease
c. hemophilia a
d. hemophilia b

(c). Hemophilia A

Explanation:

Hemophilia A can be defined as a genetic disorder, characterized by severe external or internal bleeding. Hemophilia A is caused by defective or missing factor VIII, due to mutation in gene for factor VIII that leads to formation of a non-function or truncated clotting protein.

Factor VIII is a blood clotting protein, which prevents excessive blood loss during injury. Hence, deficiency of factor VIII can leads to development of hemophilia A.

Thus, the correct answer is  option (c).

activation of phospholipase c (plc) indirectly increases intracellular ions through inositol triphosphate (ip3).