Editing 1151: Tests
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The first present [[Megan]] opened contained a home biology lab kit, including the equipment needed to perform a Gram stain. {{w|Gram staining}} is a technique used in microbiology to separate bacteria into two broad categories based on the structure of their cell walls. The sample is treated with two different dyes: first a purple dye, then secondly a pink one. When subsequently examined under a microscope, "Gram-positive" bacteria retain the purple color of the first dye, whereas "Gram-negative" bacteria do not, allowing the second pink stain to show. All Megan's presents have been stained pink, and are presumably therefore Gram-negative. | The first present [[Megan]] opened contained a home biology lab kit, including the equipment needed to perform a Gram stain. {{w|Gram staining}} is a technique used in microbiology to separate bacteria into two broad categories based on the structure of their cell walls. The sample is treated with two different dyes: first a purple dye, then secondly a pink one. When subsequently examined under a microscope, "Gram-positive" bacteria retain the purple color of the first dye, whereas "Gram-negative" bacteria do not, allowing the second pink stain to show. All Megan's presents have been stained pink, and are presumably therefore Gram-negative. | ||
| β | In the process, she has | + | In the process, she has made something of a mess of the floor, hence Cueball's wish that she had opened another present first. |
The title text refers to two bacteria commonly used as controls to confirm that the technique has been correctly performed: {{w|Staphylococcus aureus}} (Gram-positive) and {{w|Escherichia coli}} (Gram-negative). Neither are bacteria you want to be coming into contact with in any substantial quantities,{{Citation needed}} hence the need to stop accepting presents from "[[Black Hat|That Guy]]". | The title text refers to two bacteria commonly used as controls to confirm that the technique has been correctly performed: {{w|Staphylococcus aureus}} (Gram-positive) and {{w|Escherichia coli}} (Gram-negative). Neither are bacteria you want to be coming into contact with in any substantial quantities,{{Citation needed}} hence the need to stop accepting presents from "[[Black Hat|That Guy]]". | ||
