The following image represents one of the complement cascade…

The following image represents one of the complement cascades talked about in class. Instead of numbers differentiating the different complement proteins letters are used in the image. If a lower case letter is used behind the initial letter – it means that the initial protein was broken down into a more active form (a and b). Which complement protein could be represented by the letter “B”, knowing that “B-a” is used to complete the next step?

The following data were obtained from a microtiter dilution…

The following data were obtained from a microtiter dilution test. Bacteria were initially grown in the presence of different concentrations of antibiotic X, then a sample of that culture was transferred to non-selective media (a subculture) to test for growth. (+ = growth, –  = no growth) Concentration of Antibiotic X Growth Growth in Subculture       15 μg/ml + + 30 μg/ml – + 60 μg/ml – – 120 μg/ml – –   What is the MBC (Minimum bacteriocidal concentration) of antibiotic X?

The following data were obtained from a microtiter dilution…

The following data were obtained from a microtiter dilution test. Bacteria were initially grown in the presence of different concentrations of antibiotic X, then a sample of that culture was transferred to non-selective media (a subculture) to test for growth. (+ = growth, –  = no growth) Using the table below, it can be said that antibiotic X is ________at 30 μg/ml and _______ at 60 μg/ml.   Concentration of Antibiotic X Growth Growth in Subculture       15 μg/ml + + 30 μg/ml – + 60 μg/ml – – 120 μg/ml – –