Pathogenic microorganisms associated with Ready-to-Eat fresh-cut vegetables and referred to in the model may include Listeria monocytogenes, Salmonella. , Shigella. , Escherichia coli O157:H7, viruses (Hepatitis A virus, Norovirus, and Rota virus), and parasites (Cyclospora. and Cryptosporidium. ).
An isotope is a form of a chemical element whose atomic nucleus contains a specific number of neutron s, in addition to the number of proton s that uniquely defines the element.The nuclei of most atom s contain neutrons as well as protons.n atom of carbon-14 contains 6 protons and 8 neutrons and is denoted 14 C. Over time, 14 C decays into 12 C. Sometimes the isotope of an element is denoted by writing the nucleon number after the chemical symbol, and not as a superscript.
Best Answer: Define isotope: same place meaning same spot on the periodic table, therefore all of the chemical properties are the same. Different number of neutrons in the nucleus, so it has a different atomic weight.Different isotopes can be more or less radioactive, have different 1/2 lives or be fissile.Source(s): http://en.wikipedia.org/wiki/Isotopes http://ie.lbl.gov/education/isotopes.htm.imilarities: same number of protons, same number of electrons, same atomic number Differences: different number of neutrons, different mass.