Identification of Lactose Positive and Lactose Negative Bacteria on MacConkey Agar
By Kristine Snow, Marise Hussey
In this learning activity you'll observe the growth of gram negative organisms and determine if they're lactose positive or negative.
Categories of Acquired Immunity
By Kristine Snow
In this learning activity you'll evaluate the immune response including active, passive, natural, and artificial immunity.
Acid-Fast Staining
Learners view video clips demonstrating acid-fast staining procedures. Correctly stained slides are shown. The learning object includes two matching exercises.
Gram Stain Procedure (Screencast)
Learners view video clips demonstrating Gram's staining procedure. Correctly stained slides are shown.
Eukaryotic Cells: Assembling the Cell
In this interactive object, learners read the definitions of the parts of a cell and assemble a basic eukaryotic cell in a drag and drop exercise. A matching quiz involving cell terms and their definitions completes the activity.
Microbial Flora in Body Sites
By Dawn Madl
In an interactive exercise, learners identify the human body sites that harbor a normal resident flora and the sites that are sterile.