Which Antimicrobial Agent Is Most Effective Against Bacteria.pdf

Which Antimicrobial Agent Is Most Effective Against Bacteria? Dec.13.2020
Chemicals that kill bacteria or inhibit bacterial growth are called antimicrobial agents. There are
three basic types, antiseptics, disinfectants, and antibiotics. In this lab we were assigned to
determine which antimicrobial agent is most effective at killing/inhibiting growth of bacteria. My
Hypothesis was that if bleach is the best antimicrobial agent, then the zone of inhibition (the
zone where bacteria are unable to be present) should be the largest.
The procedure given was to obtain a sterile nutrient agar petri dish, mark and label the bottom,
use a sterile inoculation loop to add bacterial from a culture onto the surface of the agar, then
add each antimicrobial disk and the control onto the marked and labeled sections, and lastly
close and seal the dish with tape and let it incubate for at least a day in a incubator. Me and my
partner changed nothing from the procedure. We did have a choice to choose between penicillin
and another antibiotic, but we chose penicillin.