No but the thing about T/F negative marking is that if you guess, you have just as much probability of getting it correct as of getting it wrong. So for the questions you guessed, if you get 50% of them right and 50% of them wrong, you simply end up with just 0 instead of any positive or negative marks...
The more I read about cancer (option) the more depressed I get about the cancer essay I wrote today. Yikes. Oh well, now to options...