I think there might be a problem with the software. I am doing Exercise 3 in MDM and in step #5 it calls for me to do an antibiotic sensitivity test. When I go to the tool dropdown list there is no swab, and when I go to the media dropdown list there is no nutrient agar.
Actually, the antibiotic sensitivity tests are only used for Gram positive cocci and so the tools and media for the tests only are loaded into the lists when a Gram positive coccus has been assigned as the unknown. If you have a Gram negative rod unknown, they never are seen. So, first thing to find out is whether the correct subgroup was selected for Exercise 3 in MDM (Gram Positive Coccus). If not, you may or may not get a Gram positive coccus for your unknown. Take a look at the Gram stain via the View --> Gram stain option and see whether you have a Gram positive coccus. If not, you will not have the tools and media available for antibiotic sensitivity tests.