Not sure if this happend to anyone, but it is my first I ever recieved this notice. I have this professor and like to be called Dr., who hasn't been very understanding. I've been turning my work in on time or sometimes a day late due my full time job. I've explained this to her in the past because I previously had this professor in my other class and she gave me a C and said I did plagiarism in the other class. Apparently, in this class, I have done plagiarism on my essays when in my perspective I've been citing every piece of sentence that I know I am paraphrasing and I add my references. How come I never received a first or second notice? Also, I don't understand why she did this when I know I cited every detail. The rest of my professors that I have had in the past has always given me As and Bs on my essays why this teacher is giving me these grades? I have another class with another professor and he is very understanding. I get As with him and he tells me I do a fabulous job. I just don't understand and now I have a conference with the faculty coordinator about how we are going to fix the issue when in my perspective I think I've been following the guidelines of citing my work.
Maybe there is a misunderstanding about plagiarism here:
There is considerable controversy about the mechanism of T cell receptor (TCR) triggering, the process by which the TCR tranduces signals across the plasma membrane after binding to its ligand (an agonist peptide complexed with an MHC molecule) .
(because you copy&paste the text without quotation marks - the citation does not fix it here)
“There is considerable controversy about the mechanism of T cell receptor (TCR) triggering, the process by which the TCR tranduces signals across the plasma membrane after binding to its ligand (an agonist peptide complexed with an MHC molecule)” .
(because you cite and use quotation marks)
... and yes, it needs to be quotation marks. Using italic, indent or similar does not help as recent decisions about plagiarism in PhD theses have shown.
The mechanisms that cause T-cell receptor triggering are still a matter of discussion .
(because you cite and rephrase and no quotation marks are needed - this is most common in natural and technical sciences)
 Correct citation here with authors, title, year, journal/book, pages etc
What can you do in your situation (i.e. when meeting with the faculty coordinator)?
Maybe your professor did not clearly point the above out (sounds like it from your text)? Then it was a misunderstanding. If you are an undergrad student this will most likely be an "honest mistake" - as a PhD student that line will not help you.
I think two things should be pointed out:
- This professor has already warned you that you are doing "plagiarism in the other class". She's presumably taking that as the first or second notice.
- Citing something doesn't necessarily mean there's no plagiarism. For example if I construct a paragraph where I quote verbatim from three different sources, even if I cite them all explicitly, that's still plagiarism. There's no hard and fast line, but if your work contains more direct quotations than your own words for example, that could lead your professor to conclude you plagiarized.
If you still think you didn't plagiarize, or if you are still not sure why this professor is accusing you of plagiarism, go to the meeting and explain your point of view. Note you haven't been found guilty and there's a chance the faculty coordinator doesn't know the full details (or wants to know your point of view). You'll be given the chance to defend yourself and it's possible the coordinator will agree with you. Either way, the meeting is an opportunity for everyone involved to solve this conflict like adults.