What does fossa mean?

The fossa is the largest carnivorous mammal on the island of Madagascar.

Explanation:

AP Biology Question:

Scientists are testing substance  L  to determine how it enters mammalian cells in a culture. The cells maintain a   120 millimolar (mM)  intracellular concentration of substance  L . The scientists determined the rate of entry of substance  L  into the cells at various external concentrations of substance  L (10 to 100 mM)  in culture medium (Table 1).