a bacteria is smaller than an animal
There is not a difference between bacteriod and bacterium. Both are bacteria.
bacteria is plural and bacterium is singular
A pathogenic bacterium is alive while a virus is not.
It was a bacterium that caused it, but rats and fleas between them were the vector which spread the disease.
The bactirums genectic material is in the cytoplasm
It is caused by the bacterium Yersinia pestis, which is normally carried by fleas. So technically every animal who has fleas can carry the above bacterium, and therefore any animal may be carrying the black death. However this bacterium left Europe in the 19th century.
Bacterium
Bacterium
bacterium are prokaryaotic (no nucleus) while unicelluar (possessing a single cell) are eukaryotes. Although they have a nucleus, they are essentially comprised of only a single cell.
the difference between bacteria and protoctist is that the protoctist have a necleus while the bacteria don't.... in other words the bacteria is a prokaryotes and the protoctist is a eukaryotes
lots
there isn't a difference - you can use either word