Name Date Lab Report: 14 Bacteriophage Specificity 1. What was the purpose of this exercise? Complete the following table with your observations: Name of the bacterium Lysis (yes / no) 5 lague formation E.COi yes Entechacter averogens Staphliococcus NO aureus How do you know if bacteriophage infected the bacteria? "clear circles' die Plagues, where has lysed the ba cteriom 3. the phage DN A Why didn't the bacteriophage infect all three bacteria? Sequencing 4. What is the explanation for bacteriophage specificity when it comes to infecting specific bacterium? Proten nucle 87 2. 5.

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Your lazy labmate needs your help! They set up a 10-ml culture of the slow-growing Myxococcus xanthus yesterday, but then they decided to stay up late playing videogames and won't be in until next Monday to recover. Whoops! They call you in lab that Friday and ask you to take an OD reading for them. You do this favor for them, and helpfully do the conversion into cells/mL, finding that their culture is currently sitting at about 3.0 x108 cells per mL. Your labmate is horrified: they won't be back in time before the cells hit stationary phase, since M. xanthus doubles every 5 hours. They beg you to make a new culture using these cells and set it up to reach the same cell density Monday morning. That's 59 hours away. If the cells usually lag for three hours upon dilution into fresh medium, what cell density should you dilute the culture to? About 1.3 x 107 cells/ml About 1.3 x 105 cells/ml About 1.3 x 106 cells/ml About 1.3 x 104 cells/ml

Average plaques for bacteriophage A，B，C are 137，36，25. PFU/ml is average plaques multiply by the volume dilution multiply by the dilution factor. Show your working for each bacteriophage.

I need help with a micobiology question, Explain why adding 1 ml of a phage sample into a 9 ml tube of sterile saline creates a 1:10 dilution? thank you

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Hi, I want to ask the question related to antibiotics resistance? The question is the non-existance of solidifying agent may produce a liquid like culture media. Name the method used to determine the Antibiotic Susceptibility test which uses the said media? Can explain answer? Thank you.

Antimicrobial agent Disk code zone of inhibition interpretation Ampicillin AM     carbenicillin       erythromycin       gentamycin       Nalidixic acid