MICROBIOLOGY-ACCESS >CUSTOM<
13th Edition
ISBN: 9780135668825
Author: Tortora
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 7MCQ
Assume you stain Clostridium by applying a basic stain, carbolfuchsin, with heat, decolorizing with acid-alcohol, and counterstaining with an acidic stain, nigrosin. Through the microscope, the endospores are _____1______, and the cells are stained ___2____ .
- 1. 1—red: 2—black
- 2. 1—black: 2—colorless
- 3. 1—colorless: 2—black
- 4. 1—red: 2—colorless
- 5. 1—black: 2—red
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Chapter 3 Solutions
MICROBIOLOGY-ACCESS >CUSTOM<
Ch. 3 - Fill in the following blanks. 1. 1 m = ________ m...Ch. 3 - Prob. 2RCh. 3 - Prob. 3RCh. 3 - Prob. 4RCh. 3 - Prob. 5RCh. 3 - Why is a mordant used in the Gram stain? In the...Ch. 3 - Prob. 7RCh. 3 - Prob. 8RCh. 3 - Fill in the following table regarding the Gram...Ch. 3 - NAME IT A sputum sample from Calle, a 30-year-old...
Ch. 3 - Through the microscope, the green structures are...Ch. 3 - Prob. 2MCQCh. 3 - Carbolfuchsin can be used as a simple stain and a...Ch. 3 - Prob. 4MCQCh. 3 - Which of the following is not a functionally...Ch. 3 - Which of the following pairs is mismatched? 1....Ch. 3 - Assume you stain Clostridium by applying a basic...Ch. 3 - Prob. 8MCQCh. 3 - In 1996, scientists described a new tapeworm...Ch. 3 - Prob. 10MCQCh. 3 - Prob. 1ACh. 3 - Prob. 2ACh. 3 - Why isnt the Gram stain used on acid-fast...Ch. 3 - Endospores can be seen as refractile structures in...Ch. 3 - In 1882, German bacteriologist Paul Erhlich...Ch. 3 - Laboratory diagnosis of Neisseria gonorrhoeae...Ch. 3 - Assume that you are viewing a Gram-stained sample...
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- Choose the dyes or reagents used in the Endospore stain. (More than one choices are correct) a acid alcohol b crystal violet c carbolfuschin d malachite green e safranin f iodine g alcohol h methylene bluearrow_forwardAn acid-staining method was performed on a bacterial smear using the dyes carboifuchsin and methylene blue. The resulting stained slide contained only cells that appeared blue when visualized using a microscope. Which of the following couid explain why only blue cells were present?arrow_forwardAdditional Differential Staining Procedures: Negative stain, Capsule Stain, Endospore stain, Flagella stain. What is a positive and negative results of this procedures?arrow_forward
- 1-What can occur if you quickly drop the coverslip onto your wet mount? 2-How can one add stain to the wet mount that has already been prepared? 3-Some live microorganisms can move very quickly. How do we slow these down to view in the microscope?arrow_forwardComplete for Additional Differential Staining B: Negative staining ~ thin smear C: Endospore Stainarrow_forwardThe following figures are the photomicrographs of the samples taken with Kern&Sohn Camera Microscope at 10x magnification. Samples were stained with Lugols solution for better viewing. Differentiate these two imagearrow_forward
- In a Gram-stained smear, medium-sized rods with rounded, pink ends were found, arranged chaotically. 1. What are the tinctorial properties of the bacteria from which the smear is made? 2. What is the purpose of studying the tinctorial properties of microorganisms? 3. How to stain the slide by the Gram method?arrow_forwardPicture in white is acid fast other picure is negative stain so far this is the information I have: gram stain: positive motility: motile oxygen requirement: Facultative anaerobe and than I need these two acid fast stain: _____??? negative stain: _____????arrow_forward1. Why is it important to use a small amount of bacteria when making a smear? Give at least 2 reasons. 2. What are the two reasons for “fixing” a smear? 3. Simple staining is useful for determining what three characteristics of a bacterial cell? 4. With respect to bacteria, define morphological arrangement. Explain thoroughly!arrow_forward
- An acid-fast stain can be used to detect protective coverings found in using light microscopy. organisms incorporating mycolic acid in the cell wall organisms forming endospores organisms with capsules organisms with Gram-negative cell wallsarrow_forwardEndospores can be seen as refractile structures in unstained cells and as colorless areas in Gram-stained cells. Why is it necessary to do an endospore stain to verify the presence of endospores?arrow_forwardDraw what you would expect to see for acid fast stain and endospore stain procedure if you did not stain with counterstain. Color pencils need to be used.arrow_forward
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