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
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
Why is a counterstain (safranin) added to the Gram staining procedure? Read More »
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
Why was the Gram iodine added to the Gram staining procedure? Read More »
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
What color are the Gram-positive bacteria after Gram staining? Read More »
Experiment 1 Results Tables Table 1: 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
What are some of the limitations of simple staining? Read More »
Experiment 1 Results Tables Table 1: 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
How does crystal violet enhance the visualization of microbial features? Read More »
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
what part of the cell do the antibiotics usually work? Read More »