Stating your profession

Question

I was told in writing here in this app (and in another Spanish app) that when saying what you are (what your profession is), you do not put an article before the name of your occupation.  Example:  “Mi papá es médico.” (My dad is a doctor.) - No un of una.  I took a test here earlier today and someone is a carpenter.  I left out the article and was correct.  Did I miss an exception?  I will say that in this test, it was the person saying what their own profession is. “Yo soy un ?”  I’ve already forgotten what the job was.  Can anyone let me know?  Gracias.

Accepted Answer

Hola Carolyn
I had a look at your tests to see what specific question was marked wrong. You have a few related to saying what someone's profession is and you answered them correctly, by NOT including the article, as it should be and as explained in our lesson. But you got one wrong where you had to choose from the menu and you chose the one that was using the article: ¿Eres una bailarina? There was a correct answer "¿Eres bailarina?"  This is why in this instance it was marked wrong. 
I hope this clarified it. 
Saludos