Q1. What are the three mechanisms by which disinfectants work? Explain.
Which microbes are most susceptible versus most resistant to disinfectants? Why?
What are the factors that control the size of the zone of inhibition of an antibiotic when employing the Kirby-Bauer method? How can this system determine if an antimicrobial agent is bactericidal or bacteriostatic?
Q2. A mutant form of aphid, the klutzid, inserts its stylet into vessel element of xylem.
What materials are found in the fluids of xylem? Can an aphid live on xylem fluid?
Will xylem fluid flow into the aphid? Why or why not?