The first step in identifying an unknown bacterium is to __________. culture your unknown on selective media perform endospore staining on your culture prepare a pure working stock simple staining on your culture acid-fast staining on your culture

Q: Irue or False: An isolated bacterial colony supplies cells to grow a "pure culture" of the bacter…

A: A pure culture of bacteria is a population of bacterial cells growing in the absence of other…

Q: If you have a mixed (Gram positive and Gram negative) sample, and you complete a Gram stain, and all…

A: On the basis of lipid content in cell wall of bacteria these are classified into two types : Gram…

Q: An acid-fast staining method was performed on a bacterial smear using the dyes carbolfuchsin and…

A: Introduction: Acid-fast staining is a type of differential staining technique that was first…

Q: A capsule stain is kind of: A Simple and Negative Stain B Differential and negative stain C…

A: Introduction  Capsule is the outer most covering, which is present even outside the cell wall. This…

Q: Which of the following statements is FALSE?   Question options:   stains increase the contrast of…

A: 3rd statement is false i.e the chromophore of an acidic dye is positively charged.

Q: Move the images of bacterial cells into the chart to illustrate the color of gram-positive and…

A: Gram staining is a technique used to differentiate between two groups of bacteria namely…

Q: I need to discribe the "the colors of gram+ and gram (-) bacteria" in each independent step of the…

A: Gram staining is a common technique used to differentiate two large groups of bacteria based on…

Q: Choose the 4 most correct steps from the list below for a simple positive stain and organize them…

A: The above question is related to the laboratory technique of bacterial staining. Staining is a…

Q: If you Gram stain a bacterium that is gram-negative, which dye will be visible once the stain is…

A: Option b

Q: Which of the following serves as a counterstain for the gram-stain technique? It also happens to be…

A: Gram staining is a technique used to differentiate two groups of bacteria based on the different…

Q: Using a diagram similar to those provided, describe how serial dilutions and the Standard Plate…

A: The stepwise dilution of a solution is termed as a serial dilution. Generally, the dilution…

Q: You perform a Gram stain. Your Gram positive control, your Gram negative control, and your sample…

A: Gram-staining is a technique used to classify bacterial species, either as gram-positive or…

Q: Choose the dyes or reagents used in the Endospore stain. (More than one choices are correct)   a…

A: Simple stains- A stain that employs a single stain to color a bacteria: they are quick and easy.…

Q: Why is it important to perform a gram stain for any type of bacteria? After performing the gram…

A: The gram staining is a procedure that is useful in classifying the bacteria based on retention of…

Q: The bacterial cells in the image below were stained with a high concentration of carbolfuschin for…

A: Carbol fuchsin, carbolfuchsin, or carbol fuchsin is basically a mixture of "phenol" and basic…

Q: Gram E. coli 3nnell rod shaped 1000 x - around 1-2 micrometers long gative grom should be pink ich…

A: Gram Staining It is a differential bacterial staining techniques used to differentiate Bacteria…

Q: Gram staining is the most common initial test of unknown identification, explain in your own words…

A: The Gram staining is a typical process that is used to separate two groups of microorganisms based…

Q: After performing the gram stain you observe your result as gram negative. To help confirm this…

A: Gram staining is a technique used for staining the microbial samples. It was performed by the…

Q: The acid-fast stain is used to stain _____. The decolorizer used to destain the cells is ______.…

A: The staining procedures used to differentiate the types of bacteria are known as a differential…

Q: A patient sample will be analyzed. You are responsible to quantify the bacteria number. The dilution…

A: A sample of your blood, urine, skin, or any part of your body will be taken during a bacteria…

Q: Acid fast staining Endospore staining simple stain

A: Staining is a method in which images of specimens enhanced at microscopic level. It is commonly used…

Q: Bacterial smears are fixed before staining to make their walls permeable. accept stain, O affix the…

A: By staining microbial smears on a microscope slide, bacteria and bacterial components such as…

Q: Which of the following techniques is not used to count bacteria?         Optical density…

A: Bacterial counting can be done by via- (1) Optical density- Optical density of bacteria can be used…

Q: What is the main advantage of fluorescence polarization? Sensitivity of fluorescent probes Low cost…

A: FP is an analytical technique which provides information on orientation and mobility of…

Q: Explain the principle of Gram staining. (You do not need to describe the procedure step by step).

A: The danish Bacteriologist Christian gram discovered this differential technique in order to…

Q: Materials: .Bacterial cultures: E. coli & Staphylococcus aureus • Crystal violet (primary stain)…

A: Introduction:- Staining is the biochemical technique for coloring the specimens. There are different…

Q: You have a microscope with a resolution of 0.5 um. Your bacteria on your sample are 0.3 um apart on…

A: The light microscope is a versatile instrument used to study a wide variety of types of specimens…

Q: Name a few group of microorganisms where Grams staining will not work and/or not appropriate to use.…

A: In Gram staining crystal violet (primary stain). stain is used to color the bacterial cell wall. The…

Q: The first picture is gram stain negative

A: Gram staining is method that is used to categorise the bacteria based on their staining properties.…

Q: Describe the color and appearance of a Gram positive and Gram negative bacteria as it is treated at…

A: A Gram stain test looks for bacteria in areas where an infection is thought to have occurred,…

Q: Contrast the overall cell wall compositions of Gram positive and Gram negative bacteria, and go…

A: The bacteria are classified according to their cell wall composition into Gram positive and Gram…

Q: After performing the gram stain you observe your result as gram negative. To help confirm this…

A: Gram staining is a technique to identify bacterial stain gram-positive or gram-negative. It can be…

Q: You have a patient sample and have done a Gram Stain. When you look on the microscope, this is what…

A: After a clinical sample is received in the laboratory, the first step often is to do a mandatory…