I am not sure if I correctly understand the question (or the intent to be more precise), as I do not see the catch - you can substitute the apple with just about anything, and my answer would be similar.
In theory, there should be no bacteria inside the apple, so you would want to get the bacteria off the surface. You could simply cut a bit of peel off and place it directly onto/into some kind of culture medium. Or you could use a cotton swab to transfer your germs onto the medium. In either case though, you want to make sure that you are not contaminating your culture with bacteria from elsewhere, so you would want to sterilize whatever tools you are working with, beforehand. A laminar flow wouldn't hurt either. And if it is bacteria specifically that you are after, you will also want to add fungicide to the culture medium to avoid fungus (mold/yeast) growth.
Bacteria that multiply quickly and have no motility form colonies in a cluster. However, so bacteria that have motility do not form clusters.
When growing conditions are not right, many bacteria form
bacterium
No, Streptococci are bacteria that form chains.
If it's a string of circular bacteria it's a chain of cocci (spherical) bacteria.
Banana
there are bacteria EVERYWHERE and on every THING. bacteria makes apples rot, milk sour, and meat spoil, etc. there's bacteria that prefers boiling water, and bacteria that prefers freezing temperatures, and everywhere in between. it was the first life form in the beginning
differently,
The singular form is bacterium; the plural form is bacteria.
It is very difficult to get sick from eating apples. The only possibility is for people who may be allergic to apples.
1/6
The pesticides kill bacteria that eats/rots the apple.
Yes, bacteria is the plural form and bacterium is the singular form.
A dozen apples. The word dozen means twelve - which is more than one - so you use the plural form of apple.
Yes, apple is the singular; the plural form is apples.
Bacterium. The plural form -a comes from Latin, where a 2nd declension neuter noun's singular is -um and its plural is -a. You can see the same from datum, data;
Apples' would be the plural possessive form of apple. The singular form would be apple's."The apple's taste was bitter to Snow White."