The answer is that they treat bacterial infections.
The result which would be seen from a properly prepared negative control is nothing.
<h3>What is a Negative control?</h3>
This type of control is used to test and ensure that in the absence of the antigen we do not still get a positive reaction.
Since proper aseptic technique was practised and there was no swabbing of the surface then there would be nothing seen in the properly prepared negative control.
Read more about Negative control here brainly.com/question/7452004
Well, both subatomic particles of protons and neutrons contribute to the mass of the atom, and thus I believe that the correct response would be D. Protons and neutrons are located in the nucleus of the atom and both are responsible for the mass, atomic mass of the atom.
