How would bacterium lacking peptidoglycan react in a gram stain? Would they simply not show color...
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would bacterium lacking peptidoglycan react in a gram stain?
Would they simply not show color...
A Gram stain of unknown bacterium A grown for 24 hours show purple cells. Is bacterium...
A Gram stain of unknown bacterium A grown for 24 hours show purple cells. Is bacterium A Gram positive or Gram negative? A gram stain of bacterium A grown for 72 hours shows both purple and pink stained cells. Additional analysis shows that bacterium A is NOT contaminated. Explain these results. You are given 2 nutrient broth tubes each containing a pure culture of one of two Gram positive bacteria. Unfortunately, the labels have washed off and you are asked...
Steps of Gram Staining Bacteria containing thick cell wall Violet color Bacteria containing thin cell wall...
Steps of Gram Staining Bacteria containing thick cell wall Violet color Bacteria containing thin cell wall (LPS) Violet color Crystal violet treatment lodine Purple color Purple color Decolorization Purple color colorless Safranin Purple color pink 3. A fellow student showed you a gram stained slide where cells containing thick cell walls were stained pink. What would you tell her about the staining procedure? Why? 4. A fellow student showed you a gram stained slide where cells containing LPS were stained...
NEED HELP WITH ALL PLEASE. MICROBIOLOGY You have stained a bacteria using the Gram staining technique...
NEED HELP WITH ALL PLEASE. MICROBIOLOGY
You have stained a bacteria using the Gram staining technique what color would any endospores be if present? A. Colorless B. Green C. Pink D. Blue E. Purple 2. If you omitted the Safranin step in a gram staining procedure, what would be the color of a Gram-negative bacteria? A. Colorless B. Pink C. Green D. Purple E. Blue 3. Bacillus licheniformis would be what color and shape after a Gram staining? A. Purple...
SWAU u sulide of the slide Questions 1. What color are Gram-positive cells supposed to be...
SWAU u sulide of the slide Questions 1. What color are Gram-positive cells supposed to be after a Gram-stain? What about Gram-negative cells? (2 pts.) a rum + - purple Gram -- pink 2. What characteristics can be determined in a Gram-stain? (2 pts) 3. List all of the things that can go happen during the Gram-staining process that could lead to an incorrect or poor result. (2pts.) 4. Why are direct gram stains ordered on clinical specimens? (2pts.) 5....
69. THE ENDOSPORE itself is might to stain_?_ color in an ACID FAST stain. (a) HOT...
69. THE ENDOSPORE itself is might to stain_?_ color in an ACID FAST stain. (a) HOT pink (c) purple (d) green (e) baby-blue 70. All STAINS begin with a properly prepared _?_ . (a) dye (b) slide (c) smear (d) dog (e) cat 71. Which of the following is an ENDOTOXIN found in some microbes? This is results in fever, blood vessel dilation and possibly SHOCK when it is released into the human blood stream? (a) the plasma membrane (b)...
1.) Mycoplasmas are bacteria that lack a peptidoglycan las There are 27 an layer or outer...
1.) Mycoplasmas are bacteria that lack a peptidoglycan las There are 27 an layer or outer membrane. Therefore, on the basis A) they would stain pink with gram stain. B) they would stain purple with gram stain C) they also lack a cell membrane. D) they would look just like animal cells. use light energy to generate chemical 2.) How would you classify a purple non-sulfur bacteria, which can u energy, but requires carbon from a source other than CO,...
Exercise 8 - Gram Staining Procedure for gram staining. Know all chemicals/reagents used in correct order,...
Exercise 8 - Gram Staining Procedure for gram staining. Know all chemicals/reagents used in correct order, function of each chemical, the effect of cach chemical and how gram + and gram - bacteria would appear at each step Color reactions at each step of procedure. Know why, based on the differences in cell wall structure, that the gram + vs gram - bacteria stain either purple or pink. What washes off in the decolorizing step of a gram - bacteria?...
Which of the following pairs is mismatched?
- Which of the following pairs is mismatched? d. iodine mordant e. none of the above a. alcohol-decolorizer b. crystal violet-basic dye c. safranin-acid dye 2, Suppose you Gram stained a sample from one colony and observed a field of red and blue cocci. Adjacent cells were not always the same color. You could conclude that you have d. old cells e. made a mistake a. a mixed culture b. young cells c. dividing cells 3. Which of the following...
QUESTIONS Predict the effect on Gram-positive and Gram-negative cells of the following mistakes made when performing...
QUESTIONS Predict the effect on Gram-positive and Gram-negative cells of the following mistakes made when performing a Grum stain. Consider cac mistake independently a. Failure to add the iodine. b. Failure to apply the decoloriser. 3 c. Failure to apply the safranin. d. Reversal of crystal violet and safranin stains. Both crystal violet and safranin are basic stains and may be used to do simple stairs on Gram-positive and Gram-negative cells. This being the case, explain how they end up...
69. THE ENDOSPORE itself is might to stain_?_ color in an ACID FAST stain. (a) HOT...
69. THE ENDOSPORE itself is might to stain_?_ color in an ACID FAST stain. (a) HOT pink (c) purple (d) green (e) baby-blue 70. All STAINS begin with a properly prepared _?_ . (a) dye (b) slide (c) smear (d) dog (e) cat 71. Which of the following is an ENDOTOXIN found in some microbes? This is results in fever, blood vessel dilation and possibly SHOCK when it is released into the human blood stream? (a) the plasma membrane (b)...
A Gram stain of unknown bacterium A grown for 24 hours show purple cells. Is bacterium A Gram positive or Gram negative? A gram stain of bacterium A grown for 72 hours shows both purple and pink stained cells. Additional analysis shows that bacterium A is NOT contaminated. Explain these results. You are given 2 nutrient broth tubes each containing a pure culture of one of two Gram positive bacteria. Unfortunately, the labels have washed off and you are asked...
Steps of Gram Staining Bacteria containing thick cell wall Violet color Bacteria containing thin cell wall (LPS) Violet color Crystal violet treatment lodine Purple color Purple color Decolorization Purple color colorless Safranin Purple color pink 3. A fellow student showed you a gram stained slide where cells containing thick cell walls were stained pink. What would you tell her about the staining procedure? Why? 4. A fellow student showed you a gram stained slide where cells containing LPS were stained...
NEED HELP WITH ALL PLEASE. MICROBIOLOGY
You have stained a bacteria using the Gram staining technique what color would any endospores be if present? A. Colorless B. Green C. Pink D. Blue E. Purple 2. If you omitted the Safranin step in a gram staining procedure, what would be the color of a Gram-negative bacteria? A. Colorless B. Pink C. Green D. Purple E. Blue 3. Bacillus licheniformis would be what color and shape after a Gram staining? A. Purple...
SWAU u sulide of the slide Questions 1. What color are Gram-positive cells supposed to be after a Gram-stain? What about Gram-negative cells? (2 pts.) a rum + - purple Gram -- pink 2. What characteristics can be determined in a Gram-stain? (2 pts) 3. List all of the things that can go happen during the Gram-staining process that could lead to an incorrect or poor result. (2pts.) 4. Why are direct gram stains ordered on clinical specimens? (2pts.) 5....
1.) Mycoplasmas are bacteria that lack a peptidoglycan las There are 27 an layer or outer membrane. Therefore, on the basis A) they would stain pink with gram stain. B) they would stain purple with gram stain C) they also lack a cell membrane. D) they would look just like animal cells. use light energy to generate chemical 2.) How would you classify a purple non-sulfur bacteria, which can u energy, but requires carbon from a source other than CO,...
Exercise 8 - Gram Staining Procedure for gram staining. Know all chemicals/reagents used in correct order, function of each chemical, the effect of cach chemical and how gram + and gram - bacteria would appear at each step Color reactions at each step of procedure. Know why, based on the differences in cell wall structure, that the gram + vs gram - bacteria stain either purple or pink. What washes off in the decolorizing step of a gram - bacteria?...
- Which of the following pairs is mismatched? d. iodine mordant e. none of the above a. alcohol-decolorizer b. crystal violet-basic dye c. safranin-acid dye 2, Suppose you Gram stained a sample from one colony and observed a field of red and blue cocci. Adjacent cells were not always the same color. You could conclude that you have d. old cells e. made a mistake a. a mixed culture b. young cells c. dividing cells 3. Which of the following...
QUESTIONS Predict the effect on Gram-positive and Gram-negative cells of the following mistakes made when performing a Grum stain. Consider cac mistake independently a. Failure to add the iodine. b. Failure to apply the decoloriser. 3 c. Failure to apply the safranin. d. Reversal of crystal violet and safranin stains. Both crystal violet and safranin are basic stains and may be used to do simple stairs on Gram-positive and Gram-negative cells. This being the case, explain how they end up...
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