This may not be helpful, but yes and no. Its because it depends on the type of question and the marks. For really long questions that ask for maybe 3 different things then yes it could be better, but for short questions with maybe 2 things then probably better off just writing a paragraph.
Of course no one is going to mark you down for the way you write, its just the content that you get across to the marker that will be judged. But personally I stick with paragraphs.