Bio Lab Report: Electro And Gram-Negative Contamination In

Bio Lab Report

Title: Gram-Negative and Gram-Positive contamination in yogurt.
Introduction: There is bacteria that is beneficial and harmful in the human. Yogurt was choosed to be the best example that contains this bacteria. What happens to be the difference between these two types of bacteria, and how are they harmful? The bacteria is considered “Gram-Negative,” and the substance is considered contaminated when there is more negative bacteria than positive bacteria. This will prove or disapprove on how to examine bacteria, and how to determine if a substance is contaminated.

Materials:
 Yogurt
 Test Tube
 95% Alcohol
 Dropper
 Permanent Marker
 Bunsen Burner
 Microscope Glass Slide
 Pipette
 Inoculation Loop
 Test Tube
 Safranin