This note studies the learnability of the class k-term DNF with a bounded number of negations per term. We study the case of learning with membership queries alone, and give tight upper and lower bounds on the number of negations that makes the learning task feasible. We also prove a negative result for equivalence queries. Finally, we show that a slight modification in our algorithm proves that the considered class is also learnable in the Simple PAC model, extending Li and Vitányi result for monotone k-term DNF.