It's an open question, but there is some reason to believe that bacteria can survive a journey through space. Multicellular life would be much less likely to survive, although I'm constantly amazed at how hard it is to kill a tardigrade!
Suppose a tardigrade was in complete cryptobiosis and survived a journey to the surface of Mars. Conditions would need to be favorable if it were to ever regain an active metabolic state.
[1]https://www.quora.com/What-does-it-take-to-kill-a-waterbear-...