I have data on ATPase activity of two types of muscle at different concentrations of Ca 2+ and although the leg muscle seems to be more responsive than the flight i have to prove this statistically

Question

I have data on ATPase activity of two types of muscle at different concentrations of Ca 2+  and although the leg muscle seems to be more responsive than the flight i have to prove this statistically

I don't know whether my data is paired or not. I think that it is not paired and thhat i can use a wilcoxon test  can you just tell me if i'm right?

Ca 2+ conc    ATP activity  ATP activity                                   M               for leg     for flight                           m                muscle      muscle
1.00E-09	0.048	     0.044
1.00E-08	0.048	     0.043
5.00E-08	0.052	     0.049
1.00E-07	0.063	     0.046
2.50E-07	0.069	     0.049
6.50E-07	0.093	     0.058
1.00E-06	0.113	     0.064
1.00E-05	0.125	     0.081

Thanks

Isa