The blood of a normal healthy adult rat contains 5 million red blood cells (rbcs) per microliter of blood. each deciliter of blood contains 15 grams of hemoglobin. each rbc contains 250 million molecules of hemoglobin (a fairly close approximation for a healthy adult retired breeder female rat). suppose you have 9.96 ml of blood drawn from a healthy female retired breeder rat, then how many rbcs are in this blood sample?

The correct answer will be option-A.

Explanation:

Cell theory was proposed by the Schleiden and Schwann in 1839 when they both observed that both plants and animals are made up of structure that contains a nucleus.

They concluded and suggested that all living organism is made up of the smallest nit called cells and cell is the structural and fundamental unit of life.

In the given question, the option which states the cell theory is option-A (statement-1) and therefore is the correct answer.