Question: Laneisha just performed a Gram stain of Escherichia coli, a Gram negative organism, but has discovered that her resulting stain appears Gram positive! Explain the Gram staining process & indicate where she most likely made an error; why did it produce this outcome? 1.

Exercise 2 Gram Staining. In this exercise, you will create Gram stain smears of Bacillus subtilis, Escherichia coli, and Staphylococcus epidermidis. You will then examine the slides under the microscope. Question 1. How do the three bacteria that you stained in this exercise differ in cell shape and arrangement? Reference Photos 5-7 in your ...

Question: You are performing a Gram stain on a sample that contains Escherichia coli and Staphylococcus aureus and you stop after the addition of the counterstain. What is the appearance of the bacteria at this point? purple red colorless brown

Escherichia coli (Gram negative bacillus) Bordetella pertussis (Gram negative cocci) Streptococcus pyogenes (Gram positive) Staphylococcus aureus (Gram positive) A pathogen has been subjected to a Gram stain and appears as purple clusters of round cells.

Choose the gram stain result and cell shape that corresponds to each bacteria. Each answer is used once or not at all. Escherichia coli [Choose gram negative coccus gram positive coccus gram negative rod gram positive rod Bacillus subtilis Staphylococcus epidermidis [Choose) Which of these is a correct statement?

Question: Data Table 2: Gram Staining Results Observations Slide Magnification Escherichia coli Staphylococcus epidermidis Saccharomyces cerevisiae Photo 7: Staphylococcus epidermidis - Gram Stain

Organism: Staphylococcus epidemm's Total Magnification: 1000X Gram Reaction: positive Shape: cocci Arrangement: clusters Organism: Escherichia coli Total Magnification: 1000X Gram Reaction: negative Shape: bacilla Arrangement: Inclividual Gram Stains spolisi 1000 X Total Magnification, Staphylococcus epidermidis, Gram Stain 1000 X Total Magnification, …

A student performed a gram stain of Escherichia coli. Below is the image they sawunder 1000 X total magnification.A. After gram staining the cells appear purple. Based on this observation, does thisbacteria appear as gram positive or gram negative? Explain your answer. (1mark)B. What shape do these bacterial cells have? Which arrangement?

Question: 10 m If this is a Gram stain of Staphylococcus aureus and Escherichia coli, which of the two could be destroyed with penicillin (if they have not become resistant)? Escherichia coli (italicized) O Both O Staphylococcus aureus (italicized) Neither Which reagent is the second dye used (also called the counter stain) in a Gram reaction ...

Question: 7. Complete the table: Bacterial species Gram reaction (+/-) Gram stain color Acid-fast (+/-) Acid-fast stain color Staphylococcus aureus Mycobacterium tuberculosis Escherichia coli