This phrase means "Who is it?" Quién means 'who.' Es means 'is.' The 'it' in the translation is implied.
who is the professor
It means: and who is this
'¿Quien es Jesenia' means: Who is Jesenia?
"and this animal who is"
¿Quien es el novio? can mean two things in English: Who is the boyfriend? OR Who is the groom?
"Pregunto quien es" in English means "I ask who is."
Who is your favorite teacher
quien es means "who is" like someone knocking on the door "who is it?" in spanish it would be "quien es?" or also "who is this person?" - "quien es esta persona?"
"Who is she?"
"Quien es de Cuba" translates to "Who is from Cuba" in English. It is a question asking for the identity or origin of someone with ties to Cuba.
who is your spanish teacher
Who is the most special person to you?