4. A medium containing an antibiotic is a selective medium. True or False.

A(n) ____ is a substance that can kill or inhibit the growth of infectious microorganisms antibiotic vector toxin reservoir

Chemical modification of an antibiotic by bacteria would lead to a loss of function of the antibiotic. O True O False

7. E. Coli bacteria were grown in a 5.0 L batch cell culture reactor, with the following data collected: Cell Count (per mL) 10,277,000 Inoculation Time ---> Time 11:19 am 11:35 am 11:57 pm 12:08 pm 12:45 pm 1:07 pm 1:11 pm 1:16 pm 1:19 pm 1:34 pm 1:46 pm 1:57 pm 2:09 pm 2:33 pm 10,313,000 20,984,000 29,750,000 60,202,000 210,909,000 224,750,000 227,960,000 229,216,000 229,115,000 227,260,000 204,935,000 183,745,000 146,103,000 (inoculation is when the cells are first put in the growth media) A. Draw a log10 X vs. time graph and label the phases for batch cell growth. B. Calculate the specific growth rate, μ, and mass doubling time, td, for the exponential growth phase. C. Calculate kd, the specific rate of cell mass loss due to cell death (For B & C, it will be helpful to re-plot the y-axis as In X or In (X/X.), and focus on only the data in that phase) Using spreadsheet software will be helpful in drawing this graph and analyzing data for parts B & C. Be as quantitative as possible,…

39. Incubation period of disease is NOT influenced by which one of the following factor ?   Group of answer choices resistance of the host virulence of the microbe external temperature specific microbe involved internal temperature

5. biovars Match each of the options above to the items below. collection of strains that share stable characteristics progeny of a single, pure microbial culture strains with physiological or biochemical differences strains with differences in physical appearance strains characterized by antigenic properties

Chapter 11 Antimicrobial Drugs 435 438 Chapter 11 Antimicrobial Drugs ve 2. Which antibiotic work for Staphylococcus? Explain how you eater came to your conclusion. 3. Which antibiotic was Pseudomonas resistant to? Explain how you came to your conclusion. rith a stanhylococcus infection has come boolt ol

1. how does colony appearance and location with respect to the agar differ on the spread and pour plate? 2. list two additional factors that contribute to error in the spread plate method:

5. Complex and enriched media are most ideal to identify specific microbes from a mixed population. True or False

1. Which of the following methods is the best way to sterilize the apparatus used in a surgical operation? A. Pasteurization B. Incineration C. Boiling in water D. Autoclaving E. Disinfect with 75% alcohol