Microbiology: With Dis.... - Access (Custom)
4th Edition
ISBN: 9781269937887
Author: BAUMAN
Publisher: PEARSON
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Chapter 4, Problem 4SA
Put the following substances in the order they are used in a
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What is the purpose of each reagent in gram-staining?
Primary stain
Mordant
Decolorizing agent
Counterstain
Which of the following serves as a counterstain for the gram-stain technique? It also happens to be the counterstain for the endospore staining technique.
Which of the following acts as the decolorizer in the gram staining?
A. Safranine
B. Iodine
C. Ethanol
D. Crystal Violet
Chapter 4 Solutions
Microbiology: With Dis.... - Access (Custom)
Ch. 4 - Prob. 1TMWCh. 4 - Why is a Gram-negative bacterium colorless but a...Ch. 4 - Why didnt Linnaeus create taxonomic groups for...Ch. 4 - Necrotizing Fasciitis Fever, chills, nausea,...Ch. 4 - Why is magnification high and color absent in an...Ch. 4 - Prob. 1MCCh. 4 - Prob. 2MCCh. 4 - Prob. 3MCCh. 4 - Curved glass lenses _________ light. a. refract b....Ch. 4 - Prob. 5MC
Ch. 4 - Prob. 6MCCh. 4 - Prob. 7MCCh. 4 - Prob. 8MCCh. 4 - Prob. 9MCCh. 4 - In the binomial system at nomenclature, which term...Ch. 4 - Prob. 1FIBCh. 4 - Prob. 2FIBCh. 4 - Prob. 3FIBCh. 4 - Fill in the Blanks 4. ___________ refers to...Ch. 4 - Fill in the Blanks 5. Cationic chromophores such...Ch. 4 - Prob. 1VICh. 4 - Label the microscope.Ch. 4 - Prob. 1SACh. 4 - Critique the following definition of magnification...Ch. 4 - Prob. 3SACh. 4 - Put the following substances in the order they are...Ch. 4 - Prob. 5SACh. 4 - Prob. 6SACh. 4 - Prob. 7SACh. 4 - Prob. 8SACh. 4 - Miki came home from microbiology lab with green...Ch. 4 - Why is the definition of species as successfully...Ch. 4 - With the exception of the discovery of new...Ch. 4 - Prob. 4CTCh. 4 - Prob. 5CTCh. 4 - In what ways are the Gram stain and the acid-fast...Ch. 4 - Prob. 7CTCh. 4 - Prob. 8CTCh. 4 - Why is the genus name Coccus placed within...Ch. 4 - A clinician obtains a specimen of urine from a...Ch. 4 - Using the following terms, fill in the following...
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- Which of the following are true about a differential stain. There may be more than one answer! No chemicals are needed. More than one stain is used The acid fast stain is an example The Gram stain is an example.arrow_forwardDescribe one error in the staining procedure that would result in a Gram-positive bacterium appearing pink.arrow_forwardThe primary stain used in the endospore stain is: A. Carbolfuchsin Stain B. Methylene Blue C. Malachite green D. Safraninearrow_forward
- Name all the reagents used in Gram-staining and their roles in the staining procedure.arrow_forwardThe acid fast technique is also known as: A. Ziehl-Neelsen stain B. Auramine-rhodamine stain C. Gerrard-Lampard Stain D. Kinyoun methodarrow_forwardList the steps of the gram staining procedure in proper sequence and indicate the color of gram-positive and gram-negative bacteria after each step.arrow_forward
- After performing a Gram stain on a Gram negative bacteria, the specimen does not show pink or purple bacteria. Which of the following could notexplain why this occurred? Decolorizer was used after safranin Safranin was not used Crystal violet was not used The specimen was not heat-fixedarrow_forwardIn Gram staining method, list the reagents and state their role for each step of the procedure? In preparing bacterial smear, why do we need to pass the slide over the flame?arrow_forwardList the step-by-step procedure of Gram staining.arrow_forward
- Considering you can’t identify bacteria from a Gram stain, why might a physician perform a Gram stain on a sample before prescribing an antibiotic?arrow_forwardExplain how bacterial cells would look in the gram staining procedure if the following mistakes were made: a. Decolorizer left on too long b. Decolorizer not left on long enough c. Slide not heat-fixed before stainingarrow_forward
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