How could these byproducts affect phenol red (a pH indicator), and subsequently make a media selective/differential?...
How could these byproducts affect phenol red (a pH indicator), and subsequently make a media selective/differential? (for bacteria /microbes).
How phenol red work in a media ?
Homework Answers
A solution of phenol red will have a yellow color at acidic pH
and a red color at alkaline pH.
Mannitol Salt Agar (MSA) - selective and differential for
Staphylococcus aureus. Staphylococcus aureus grows in
Mannitol Salt Agar, ferments Mannitol and produces acid yellow
colonies.
Add Answer to:
How could these byproducts affect phenol red (a pH indicator),
and subsequently make a media selective/differential?...
dyes, such as phenol red or methylene blue used in differential media? Why are dyes, such...
dyes, such as phenol red or methylene blue used in differential media? Why are dyes, such as A. to inhibit motility B. to stain microbes C to kill bacteria D. to see microbes to detect pH changes due to metabolism What is the purpose of differential medias to encourage growth of the desired bacteria B to isolate few bacteria to observe metabolism of the bacteria D. to stain bacteria E to determine motility 10 Why does Staphylococcus aureus turn yellow...
Multiple Choice. Highlight the single correct answer choice. 1. Streak plates are useful in microbiology to...
Multiple Choice. Highlight the single correct answer choice. 1. Streak plates are useful in microbiology to __________. quantify the number of bacteria measure turbidity identify bacteria determine cell shape 2. In the streak-plate technique, the intent is to isolate bacteria by dilution in theory by __________. dilution on a solid surface separating cells within the solid surface using a pipette dilution in water blanks 3. A pure culture consists of which of the following? one genus of microbe one species...
1. Define selective media. 2. Define differential media. 3. Name a media that is selective and...
1. Define selective media. 2. Define differential media. 3. Name a media that is selective and differential and how you can interpret results as being such. 4. What makes MSA selective? EMB? MAC? 5. What does a yellow color on MSA indicate SPECIFICALLY!!?? (not name of bacteria) 6. What characteristic is detected by EMB/MAC? 7. What is a positive result on EMB? 8. What is a positive result on MAC?
Phenol red is an indicator that changes color over a range from pH=6.4 to pH=8.0. What...
Phenol red is an indicator that changes color over a range from pH=6.4 to pH=8.0. What is Ka of phenol red?
The indicator phenol red changes from yellow to red between pH 6.8 and pH 8.4. If...
The indicator phenol red changes from yellow to red between pH 6.8 and pH 8.4. If phenol is red added to a solution, and the solution turns red then A.) The solution is basic and the pH must be at or below 7.0. B.) The pH of the solution must be below 6.8, and the solution is basic. C.) The pH of the solution must be below 6.8, and the solution is acidic. D.) The pH of the solution must...
answer all please 21) Indicate whether nutrient broth is a selective or differential media by marking...
answer all please
21) Indicate whether nutrient broth is a selective or differential media by marking the appropriate box(es). If the medium is both selective and differential, mark both. If the medium is neither selective nor differential, check the "neither" box selective O differential O neither 22) Indicate whether phenol red dextrose agar is a selective or differential media by marking the appropriate box(es). If the medium is both selective and differential, mark both. If the medium is neither selective...
answer all... please (1 pts) 16) Indicate whether phenol red lactose fermentation broth is a selective...
answer all... please
(1 pts) 16) Indicate whether phenol red lactose fermentation broth is a selective or differential media by marking the appropriate box(es). If the medium is both selective and differential, mark both. If the medium is neither selective nor differential, check the "neither" box: selective o differential Oneither (1 pts) 17) Indicate whether mannitol salt agar is a selective or differential media by marking the appropriate box(es). If the medium is both selective and differential, mark both. If...
Mailings 15.15. Differential and selective media lab (2) (Compatibility Mode] Review View . 3 3 +...
Mailings 15.15. Differential and selective media lab (2) (Compatibility Mode] Review View . 3 3 + 1 AaBbCcDdEe AaBbCcDdEe AaBb CD AaBb CcDdl Aa ER No Spacing Heading 1 Heading 2 Normal Inhibitors Name of agar Phenylethyl alcohol Agar (PEA) Substrate None (not a differential media) Polyphenyl alcohol - affects cell membrane and DNA synthesis Indicators Notes/ expected results None (not a differential Inhibits many Gram media) negatives and some gram positives. Used to select for streptococci, enterococci, and staphylococci...
Background Ques part 1) Selective and differential media; EMB and Tsl agar bacill inhabit a wide...
Background
Ques part 1)
Selective and differential media; EMB and Tsl agar bacill inhabit a wide range of environments. Many are significant pathogens, such a coli, Salmonella, Shigella, but many compose our normal flora and inhabit soil and water. Many gra negative bacilli that inhabit our large intestine are called enterics. Enteric pathogens are the most frequent cause of diarrheal illnesses and have become significant contaminants spread through foo Some can also cause respiratory and urinary infections. Experiment 1: EMB...
1. How does pH specifically affect bacterial growth? 2. How specifically does temperature affect bacterial growth?...
1. How does pH specifically affect bacterial growth? 2. How specifically does temperature affect bacterial growth? 3. What terms are used to describe optimum temperature for bacteria? 4. Specifically, how can osmotic pressure affect growth of bacteria? 5. How can anaerobes be grown in the lab? What is the name of the broth? The indicator it contains? 6. Difference between defined and undefined media and understand how media components will support the bacterial growth or not (i.e. fastidious or not)
dyes, such as phenol red or methylene blue used in differential media? Why are dyes, such as A. to inhibit motility B. to stain microbes C to kill bacteria D. to see microbes to detect pH changes due to metabolism What is the purpose of differential medias to encourage growth of the desired bacteria B to isolate few bacteria to observe metabolism of the bacteria D. to stain bacteria E to determine motility 10 Why does Staphylococcus aureus turn yellow...
answer all please
21) Indicate whether nutrient broth is a selective or differential media by marking the appropriate box(es). If the medium is both selective and differential, mark both. If the medium is neither selective nor differential, check the "neither" box selective O differential O neither 22) Indicate whether phenol red dextrose agar is a selective or differential media by marking the appropriate box(es). If the medium is both selective and differential, mark both. If the medium is neither selective...
answer all... please
(1 pts) 16) Indicate whether phenol red lactose fermentation broth is a selective or differential media by marking the appropriate box(es). If the medium is both selective and differential, mark both. If the medium is neither selective nor differential, check the "neither" box: selective o differential Oneither (1 pts) 17) Indicate whether mannitol salt agar is a selective or differential media by marking the appropriate box(es). If the medium is both selective and differential, mark both. If...
Mailings 15.15. Differential and selective media lab (2) (Compatibility Mode] Review View . 3 3 + 1 AaBbCcDdEe AaBbCcDdEe AaBb CD AaBb CcDdl Aa ER No Spacing Heading 1 Heading 2 Normal Inhibitors Name of agar Phenylethyl alcohol Agar (PEA) Substrate None (not a differential media) Polyphenyl alcohol - affects cell membrane and DNA synthesis Indicators Notes/ expected results None (not a differential Inhibits many Gram media) negatives and some gram positives. Used to select for streptococci, enterococci, and staphylococci...
Background
Ques part 1)
Selective and differential media; EMB and Tsl agar bacill inhabit a wide range of environments. Many are significant pathogens, such a coli, Salmonella, Shigella, but many compose our normal flora and inhabit soil and water. Many gra negative bacilli that inhabit our large intestine are called enterics. Enteric pathogens are the most frequent cause of diarrheal illnesses and have become significant contaminants spread through foo Some can also cause respiratory and urinary infections. Experiment 1: EMB...
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