User privileges question

I am creating a user that needs to have SELECT, INSERT, and UPDATE privileges on the objects in its schema.

After creating a user I granted the user CONNECT only:

GRANT CONNECT TO usr1;

I know that connect includes CREATE SESSION privilege so looks like i do not need anything else. Am I right? Will usr1 be able to have SELECT, INSERT, and UPDATE privileges by default or do I need to grant any other roles or privileges for that?