Q In this lab activity, you will be using a virtual microscope to focus on a Gram stained slide. This will give you a chance to view bacteria under a microscope to identify whether they are Gram positive or Gram negative and their shape (morphology) After watching the videos, you are ready to view slides using the virtual microscope. Take a look at Gram stained samples— E. coli, Gram stain and S. epidermis, Gram stain slides from the ‘Slide Library’. 1. E. coli, Gram stain slide a) Is E. coli Gram positive or Gram negative? b) Download an image of your slide after you have it focused under the 40X objective and submit it. 2. S. epidermis, Gram stain slide a) Is S. epidermis Gram positive or Gram negative? b) Download an image of your slide after you have it focused under the 40X objective and submit it.The final activity in this week’s lab is the classification of the soil isolates based on Gram staining results. The Gram staining procedure was performed on the soil isolates that were picked and patched plated. Using the images provided, state whether the bacteria are Gram positive or Gram negative and describe the cell shape (morphology).
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