I need help answering a question regarding a lab experiement, the experiment is this:
Certain species (not all) of bacteria have ability to propel themselves with the use of the whip-like flagella. The ability to move in a specific direction is called taxis. When bacteria move towards advantageous stimuli (food or light) this is known as positive taxis. When they move away from harmful stimuli (toxins or antibiotics) it is known as negative taxis.
Not all bacteria that possess flagella have the same number. Bacteria with one flagellum are called monotrichous. Bacteria with flagella at either end are called amphitrichous. Bacteria with flagella all over them are called peritrichous.
In order to test for motility (presence of flagella), a special semi-solid media is used (0.4% rather than 1.5%). We will use an inoculating needle to stab the bacteria into the media. Motile bacteria will grow outward from the stab mark.
I need help answering this first question regarding the lab info given. Question:
Why is it important to use proper aseptic technique for this test?
I need help answering a question regarding a lab experiement, the experiment is this:
Certain species (not all) of bacteria have ability to propel themselves with the use of the whip-like flagella. The ability to move in a specific direction is called taxis. When bacteria move towards advantageous stimuli (food or light) this is known as positive taxis. When they move away from harmful stimuli (toxins or antibiotics) it is known as negative taxis.
Not all bacteria that possess flagella have the same number. Bacteria with one flagellum are called monotrichous. Bacteria with flagella at either end are called amphitrichous. Bacteria with flagella all over them are called peritrichous.
In order to test for motility (presence of flagella), a special semi-solid media is used (0.4% rather than 1.5%). We will use an inoculating needle to stab the bacteria into the media. Motile bacteria will grow outward from the stab mark.
I need help answering this first question regarding the lab info given. Question:
Why is it important to use proper aseptic technique for this test?
