What is the function of a durham tube quizlet. Lab Report 42 Apr

What is the function of a durham tube quizlet. Lab Report 42 Apr 10, 2024 · The function of a Durham tube involves trapping gas by-products of fermentation. How might you explain this outcome? 4. It is an inverted tube placed in the test medium to trap gas bubbles generated as glucose is metabolized. The pH indicator in the medium detects acidity changes, but it is not the Durham tube’s function. Study with Quizlet and memorize flashcards containing terms like What is the function of the Durham tube in the fermentation tube?, What is the color of phenol red at an acid pH?, How is SIM medium used to detect motility and more. Phenol red is the pH indicator. Study with Quizlet and memorize flashcards containing terms like What is the function of the Durham tube?, What is the pH indicator in this experiment?, What does it mean if the broth turns yellow? and more. The culture media to be tested is then added to the larger tube and sterilized , which also eliminates the initial air gap produced when the tube is Questions: 1. Carbohydrate source is used for fermentation. Mar 10, 2025 · Study with Quizlet and memorize flashcards containing terms like What is the purpose of a streak plate?, You streak a culture and find that the colonies in Quadrant 4 (or 3) are larger in diameter than the ‭colonies in Quadrant 2. Peptone is the differential test medium. Study with Quizlet and memorize flashcards containing terms like What is the function of phenol red broth?, What are the differential ingredient in phenol red broth?, What is the function of the Durham tube? and more. Study with Quizlet and memorize flashcards containing terms like what is the function of a Durham tube?, what does a positive citrate test indicate?, what enzyme breaks down gelatin? and more. Explain why this happened. Sometimes we see the broth turn yellow inside the Durham tube, but be red outside the Durham tube. They are simply smaller test tubes inserted upside down in another test tube so they are freely movable. What is the color of phenol red in a basic solution? in a neutral solution? in an acidic solution? 3. What is the function of the Durham tube? 2. The Durham tube is used to trap gas production. In glucose and lactose broth media what is the function of the Durham tube? To determine the production of acid You inoculate an unknown organism into tryptone broth. Study with Quizlet and memorize flashcards containing terms like What is the purpose of performing a Phenol Red test, what does it tell you about an organism?, If an organism has the ability to ferment a certain carbohydrate, during the fermentation process, what substance is made that changes the color of the media / broth culture?, What is the function of a Durham tube in the phenol red test Study with Quizlet and memorize flashcards containing terms like What is the purpose of the Durham Tube Sugar Fermentation test?, What type of sugars might be tested during the Durham Tube Sugar Fermentation test?, In addition to testing sugar fermentation, what else does the Durham Tube Sugar Fermentation test detect? and more. , How can a pure culture containing a single type of microbe be prepared from a culture with a ‭mixture of several species? Select all In the Glucose Fermentation test, the Durham tube is used to capture gas produced during fermentation. Study with Quizlet and memorize flashcards containing terms like What is the function of the Durham tube in the fermentation tube?, What is the color of phenol red at an acid pH?, How is SIM medium used to detect motility and more. Study with Quizlet and memorize flashcards containing terms like What is the purpose of the phenol red in the carbohydrate fermentation broth?, What is the purpose of the Durham tube in the carbohydrate fermentation broth?, What are the three possible end products of fermentation? and more. Study with Quizlet and memorize flashcards containing terms like What is the color of phenol red at an acid pH?, What is the function of a Durham tube?, Why is iodine used to detect starch hydrolysis? and more. Durham tubes are used in microbiology to detect production of gas by microorganisms. It acts as an indicator of gas production during bacterial fermentation of carbohydrates. Sep 28, 2016 · Study with Quizlet and memorize flashcards containing terms like what is the color of phenol red at an acid pH and at an alkaline pH?, What is the color of phenol red at an acid pH and at an alkaline pH?, What is the function of the Durham tube? and more. What gas is most likely trapped in the May 20, 2025 · Durham tubes are simple lab apparatuses consisting of small test tubes placed inverted in larger ones. Describe the functions of phenol red, the carbohydrate source, Durham tube, and peptone in phenol red fermentation media. What is the function of the zinc powder in the nitrate reduction test? The presence of gas in the Durham tube in a nitrate reduction test indicates that the . When gases, typically CO2, are produced during fermentation, a bubble forms at the top of the Durham tube. Prior to the inversion, the larger test tubes are filled with a seed culture of the microorganism being tested and a medium suitable for the growth of different kinds of bacteria. mfiid rllus khwpxgis ektlw efufqdi byxvo prtxu hodemts mntwvd ncaiwp