This is the 1285th most frequent Russian word.
проводится
"Проводится" means "is carried out" or "is conducted."
In this sentence, "проводится" is used to indicate that the conference is actively taking place, employing the reflexive form to denote an event organized by an unspecified subject.
В университете проводится конференция по биологии.
A biology conference is being held at the university.
Here, "проводится" signifies that the exam is scheduled to occur, stressing the organizational aspect of the event.
Экзамен проводится в понедельник.
The exam will take place on Monday.
In this sentence, "проводится" suggests a regularly occurring action, emphasized by the habitual nature of the security checks.