"It is an apple."
Translation:È una mela.
Every noun will either be masculine or feminine, in general you just have to learn it i.e. una mela (one/a apple) la mela (the apple) where una and la are what states it is feminine, or un ragazzo (one/a boy) il ragazzo (the boy) where un and il are what states it is masculine.
HOWEVER, as I have just realised, most words that are feminine end in a A and most words that are masculine end in an O. Plurals tend to end in an I or E.