Minimal Selective Concentration (MSC) is _______. - the concentration of antibiotic needed to prevent pathogenic bacteria growth - the concentration of antibiotic required to positively select for antibiotic resistance genes (ARG)

Spectrum of activity describes how many species of microbes a drug works against. Broad-spectrum antibiotics are effective against many different groups of bacteria, while narrow-spectrum antibiotics work well against a particular group or species, but have little effect on the rest. Based on our class results, which of the following are narrow-spectrum? Group of answer choices Amoxicillin/Clavulanic acid Ampicillin Kanamycin Ciprofloxacin Vancomycin Bacitracin Trimethoprim/Sulfamethoxazole

step 1 Staphylococcus aureus is a bacteria, that is now resistant to commonly used antibiotics, and it is now resistant to the antibiotic methicillin (narrow spectrum beta lactam class). step 2 Describe the physiological mechanism used by individual bacteria to resist the antibiotic listed in above of this Thought Question. For example, the mechanism could be modification of drug, modification of target, prevention of drug penetration, overproduction of target, or target mimicry. (This means that you must choose a strain of bacteria that we know the characteristic of the bacteria that allows the bacteria to be resistant.)

phage can be "induced" as a result of DNA damage. Consequences of induction include. Temperate phage, e.g lambda phage; lytic cycle and transduction Lytic T4 phage, assembly, conjugation O Lytic phage, e.g. T4 phage; lysogenic cycle, prophage formation Temperate phage, e.g. lambada phage, prophage formation, transformation O T4 phage, lytic cycle, specialized trasnduction

Antibiotic Zone of Inhibition A 15 mm B O mm 7 mm 15 mm a. Which antibiotic was most effective against the bacteria being tested? b. Which antibiotic would you recommend for treating a disease caused by this bacterium? c. Was antibiotic A bactericidal or bacteriostatic? How can you tell?

GalK Section/Counterselection When galK is replaced with the gene of interest, these bacteria are able to grow on 2-DOG. True False

GalK Section/Counterselection When bacteria are expressing galK, these bacteria are able to grow on 2-DOG. True False

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GalK Section/Counterselection When galK is replaced with the gene of interest, these bacteria are able to grow on galactose minimal media. True False

Helllo, Im confused how to do this problem, can you give an explanation too?