Experiment 3 Post-Lab Questions 1. What color are the Gram-positive bacteria after Gram staining? Gram-negative bacteria? (5 points) Gram-positive bacteria appear as dark purple or blue due to retaining the primary dye (Crystal Violet) in the cell wall. Gram-negative bacteria appear as red or pink due to decolorizing to accept the counterstain (Safranin). 2. What […]
Experiment 3 Post-Lab Questions 1. What color are the Gram-positive bacteria after Gram staining? Gram-negative bacteria? (5 points) Gram-positive bacteria appear as dark purple or blue due to retaining the primary dye (Crystal Violet) in the cell wall. Gram-negative bacteria appear as red or pink due to decolorizing to accept the counterstain (Safranin). 2. What
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Results Tables Table 2: Experiment 2 Staining Observations (5 points) Stain used: Nigrosin Observations: Background is stained, bacteria shows up as clear spiral. Experiment 2 Post-Lab Questions 1. After visualizing the stained samples either using your microscope or by looking at the sample images provided, describe what physical/visual characteristics
Experiment 1 Staining Observations (5 points) Stain used: Crystal Violet Observations: Purple rod-shape bacteria with white background were observed Experiment 1 Post-Lab Questions 1. How does crystal violet enhance the visualization of microbial features? (5 points) Crystal violet enhances the contrast between the microorganism itself and the slide,
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Experiment 1 Staining Observations (5 points) Stain used: Crystal Violet Observations: Purple rod-shape bacteria with white background were observed Experiment 1 Post-Lab Questions 1. How does crystal violet enhance the visualization of microbial features? (5 points) Crystal violet enhances the contrast between the microorganism itself and the slide,
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Experiment 1 Staining Observations (5 points) Stain used: Crystal Violet Observations: Purple rod-shape bacteria with white background were observed Experiment 1 Post-Lab Questions 1. How does crystal violet enhance the visualization of microbial features? (5 points) Crystal violet enhances the contrast between the microorganism itself and the slide,
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Pre-Lab Questions 1. What determines if a bacterial cell is Gram-positive or Gram-negative? (5 points) Amount and location of the peptidoglycan molecule in the prokaryotic cell wall determines whether a bacterial cell is Gram-positive or Gram-negative. 2. In this lab, both viruses and prions were introduced as acellular organisms. Do some research and describe
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Structure and Microscopy Lab 4: Structure and Microscopy (100 points) Student Name: Student ID: Course ID: -Each question on the lab worksheet must be answered completely, thoroughly, in complete sentences and correctly in order to be considered for full credit -If the question asks you to do research or find a source,
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What are some of the limitations of simple staining? Do a search online 1-2 antibiotics that affect Gram-positive bacteria and list them. On what part of the cell do the antibiotics usually work? List one or two antibiotics that affect Gram-negative bacteria? On what part of the cell do the antibiotics usually work? (Be sure
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discuss why it might be important for a researcher or a hospital technician to be able to differentiate between Gram-positive and Gram-negative bacteria. Using either a textbook or a reputable online resource, research some of the typical characteristics of bacteria, and discuss why it might be important for a researcher or a hospital technician to