Antiseptics and disinfectants
5) My hypothesis: “The higher the concentration of antiseptic, the more powerful it will be at inhibiting/ killing microorganisms which cause bacterial growth.” This theory supports my result because as you can see the zone of inhibition increases due to the increasing concentration of antiseptic. The higher concentration of antiseptic means it has been less diluted, which means its more stronger than other more diluted concentrations, this high concentration will determine how powerful the antiseptic will be at killing/inhibiting the growth of bacterium, this high concentration of antiseptic will break down the bacterial cell wall, after this process has happened the antiseptic can stop the mutation of the bacteria and inhibit the growth of the bacteria or kill the bacteria. As you can see from my results the higher amount of antiseptic agent present in the ajar jelly, the more powerful it will be at destroying the bacterial cell wall, that is why with the increasing concentration of antiseptic the zone of inhibition increases because the high dose of concentration is attacking the bacteria, hence inhibiting a larger zone of inhibition.
On the other hand decreasing the concentration of antiseptic reduces the effect of destroying the bacterium; the weaker the concentration is the less powerful it is at attacking the cell wall of the bacteria. As you can see from my results at the point of 10 percent concentration the smallest zone of inhibition is present this is because the weaker concentration wasn’t strong enough to attack enough of the bacteria in the ajar jelly, so a smaller zone of inhibition became present. During incubation, the chemical diffuses from the disk containing the agent into the surrounding agar; my weaker concentration also wasn’t able to diffuse as well as a higher concentration. Another factor is that my higher concentration wasn’t diluted as much as much as my lower concentration, which means that the water neutralised some of the
On the other hand decreasing the concentration of antiseptic reduces the effect of destroying the bacterium; the weaker the concentration is the less powerful it is at attacking the cell wall of the bacteria. As you can see from my results at the point of 10 percent concentration the smallest zone of inhibition is present this is because the weaker concentration wasn’t strong enough to attack enough of the bacteria in the ajar jelly, so a smaller zone of inhibition became present. During incubation, the chemical diffuses from the disk containing the agent into the surrounding agar; my weaker concentration also wasn’t able to diffuse as well as a higher concentration. Another factor is that my higher concentration wasn’t diluted as much as much as my lower concentration, which means that the water neutralised some of the