This is the 2614th most frequent Russian word.
требуется
"Требуется" means "is required" or "is needed."
Here "требуется" indicates necessity or requirement for a specific action (patience is needed).
Для успешного выполнения задания требуется терпение.
Patience is required to successfully complete the task.
In this sentence, "требуется" emphasizes a prerequisite for a profession (medical education needed).
Чтобы работать врачом, требуется медицинское образование.
To work as a doctor, medical education is required.
This use of "требуется" points to a mandatory action to follow (registration is needed).