<prompt> Staphylococcus is -Gram - positive cocciGram - negative cocciGram - positive bacillusGram - negative bacillus  <response>: Ans. is a i.e., Gram - positive cocci Gram positive bacteria . There are 6 classic grain positive bacteria that cause human disease. . Of these 2 are cocci Staphylococci Streptococci including anaerobic peptostreptococci . Other 4 are bacilli Corynebacterium 3. Clostridium Bacillus 4. Listeria 