Calculator for converting numbers to scientific notation. In scientific notation each number is written in the form: b Ã 10 y, where b is a number between 1 and 10 and y is a positive or negative whole number. The calculator below can be used to covert numbers to normalised scientific notation.
Although there are similarities between bacteria and human cells, there are many differences as well. Antibiotics work by affecting things that bacterial cells have but human cells donât. For example, human cells do not have cell walls, while many types of bacteria do. The antibiotic penicillin works by keeping a bacterium from building a cell wall. Bacteria and human cells also differ in the structure of their cell membranes and the machinery they use to build proteins or copy DNA.
Penicillins are all Î²-Lactam (Beta-Lactam) antibiotics, which are antibiotic molecules with a Î²-Lactam nucleus. There are a number of penicillin types, that react to bacteria in a variety of degrees, some of these are: 1  ampicillin. 2  amoxicillin. 3  flucloxacillin. 4  phenoxymethylpenicillin.hey are mainly bactericidal, are especially active against gram-positive organisms, and, with the exception of hypersensitivity reactions, show a particularly low toxic action on animal tissue. Penicillins are a certain collection of antibiotics that eliminate infection causing bacteria.