describe the results you would expect to obtain in a simple stain of a mixture a...
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describe the results you would expect to obtain in a simple
stain of a mixture a...
1. Describe several advantages of differential staining procedures compared with simple staining techniques. 2. Give the...
1. Describe several advantages of differential staining procedures compared with simple staining techniques. 2. Give the purpose of each of the following reagents in a differential staining procedure: a. Primary stain b. Counter stain c. Decolorizing agent d. Mordant 3. Why is it important for the counter stain to be a lighter color than the primary stain? 4. You have done gram staining for a gram positive bacteria, but at the end you observed pinkish-red bacteria under microscope, what was...
There may be more Which of the bacteria (A-E) would you expect to be catalase positive...
There may be more Which of the bacteria (A-E) would you expect to be catalase positive and why? than one of the bacteria positive for catalase. A OBLIGATE AEROBE B FACULTATIVE ANAEROBE CAEROTOLERANT ANAEROBE D OBLIGATE ANAEROBEE MICROAEROPHILE Extra: In a Gram stain one step could be omitted and still allow differentiation between Gram positive and Gram negative bacteria. What is that step? Why?
How do acid fast stain results compare to gram stain results? a. In other words, what...
How do acid fast stain results compare to gram stain results? a. In other words, what does the following represent? Acid Fast Stain (to Pink bacteria ACO fas广 Blue bacteria C AS Gram Stain Pink bacteria 6eAm- Violet bacteria GRAM f b. Why is there a difference in what the colors mean?
5. You use the Gram stain to try to differentiate bacteria in a sample. You find...
5. You use the Gram stain to try to differentiate bacteria in a sample. You find that all of the cells are Gram negative, but the teaching assistant insists there are both Gram positive and Gram negative cells present in the sample you are given. You definitely smeared a loop of the sample onto the slide and your fingers are stained a little purple and also a little red from handling the sides of the slide. Give a reason why...
lake-up Micro Lab: Identifying Unknown bacteria: dentify the Unknown Bacteria Lab Experiment elow are results from...
lake-up Micro Lab: Identifying Unknown bacteria: dentify the Unknown Bacteria Lab Experiment elow are results from the unknown lab experiment. The identity of this bacteria is not known. Your ask is to use the data below to form a hypothesis of the identity of this bacteria. Record your results on he chart (Table 1) below and make a prediction on the bacteria based on your results. There is a list of ossible bacteria below. You may need to look back...
45. Which detection method would be more useful for observing fungus rather bacteria? a. Simple stain...
45. Which detection method would be more useful for observing fungus rather bacteria? a. Simple stain b. Gram stain c. Endospore stain d. Negative stain e. Wet mount Match the following: A) Crystal violet B) Methylene blue C) Malachite green D) Safranin E) Iodine 46. Acts as the primary stain in the simple stain procedure. 47. Acts as the counterstain in the Gram stain procedure 48. Acts as the primary stain in the Gram stain procedure 49. Used to stain...
If you perform a gram stain on a Gram positive bacteria but forget to add the...
If you perform a gram stain on a Gram positive bacteria but forget to add the iodine in the second step what color would the bacteria be? Question 6 options: Purple Green Red Orange The Gram Positive cell wall has a thick peptidoglycan layer, inner membrane, teichoic and ________________. Question 7 options: Outer membrane Lipoteichoic Acids Porins Lipopolysaccharides
why isn't the gram stain used on acid fast bacteria ?if you did Gram stain acid...
why isn't the gram stain used on acid fast bacteria ?if you did Gram stain acid fast bacteria ,what would their Gram reaction be?what is the gram reaction of non acid fast bacteria
Assume that you stain encapsulated Streptococcus by applying a simple stain, carbolfuchsin (red) and then counterstaining...
Assume that you stain encapsulated Streptococcus by applying a simple stain, carbolfuchsin (red) and then counterstaining with a negative stain nigrosin (black). Through the microscope you will see The capsule is stained (list color). The cells are stained The background was stained List the approximate size range of the following: Viruses Prokaryote cells Eukaryote cells Give two reasons for heat fixing a bacterial smear on a slide before staining. What is the reason that simple stains will dye bacterial cells?
Explain the purpose of simple staining. Why is fixing necessary for most staining procedures. List the...
Explain the purpose of simple staining. Why is fixing necessary for most staining procedures. List the steps in preparing a gram stain and describe the appearance of gram positive and gram negative cells after each step. Why is the gram stain so useful
1. Describe several advantages of differential staining procedures compared with simple staining techniques. 2. Give the purpose of each of the following reagents in a differential staining procedure: a. Primary stain b. Counter stain c. Decolorizing agent d. Mordant 3. Why is it important for the counter stain to be a lighter color than the primary stain? 4. You have done gram staining for a gram positive bacteria, but at the end you observed pinkish-red bacteria under microscope, what was...
There may be more Which of the bacteria (A-E) would you expect to be catalase positive and why? than one of the bacteria positive for catalase. A OBLIGATE AEROBE B FACULTATIVE ANAEROBE CAEROTOLERANT ANAEROBE D OBLIGATE ANAEROBEE MICROAEROPHILE Extra: In a Gram stain one step could be omitted and still allow differentiation between Gram positive and Gram negative bacteria. What is that step? Why?
How do acid fast stain results compare to gram stain results? a. In other words, what does the following represent? Acid Fast Stain (to Pink bacteria ACO fas广 Blue bacteria C AS Gram Stain Pink bacteria 6eAm- Violet bacteria GRAM f b. Why is there a difference in what the colors mean?
5. You use the Gram stain to try to differentiate bacteria in a sample. You find that all of the cells are Gram negative, but the teaching assistant insists there are both Gram positive and Gram negative cells present in the sample you are given. You definitely smeared a loop of the sample onto the slide and your fingers are stained a little purple and also a little red from handling the sides of the slide. Give a reason why...
lake-up Micro Lab: Identifying Unknown bacteria: dentify the Unknown Bacteria Lab Experiment elow are results from the unknown lab experiment. The identity of this bacteria is not known. Your ask is to use the data below to form a hypothesis of the identity of this bacteria. Record your results on he chart (Table 1) below and make a prediction on the bacteria based on your results. There is a list of ossible bacteria below. You may need to look back...
45. Which detection method would be more useful for observing fungus rather bacteria? a. Simple stain b. Gram stain c. Endospore stain d. Negative stain e. Wet mount Match the following: A) Crystal violet B) Methylene blue C) Malachite green D) Safranin E) Iodine 46. Acts as the primary stain in the simple stain procedure. 47. Acts as the counterstain in the Gram stain procedure 48. Acts as the primary stain in the Gram stain procedure 49. Used to stain...
Assume that you stain encapsulated Streptococcus by applying a simple stain, carbolfuchsin (red) and then counterstaining with a negative stain nigrosin (black). Through the microscope you will see The capsule is stained (list color). The cells are stained The background was stained List the approximate size range of the following: Viruses Prokaryote cells Eukaryote cells Give two reasons for heat fixing a bacterial smear on a slide before staining. What is the reason that simple stains will dye bacterial cells?
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